[Title 49 CFR ]
[Code of Federal Regulations (annual edition) - October 1, 2019 Edition]
[From the U.S. Government Publishing Office]
[[Page i]]
Title 49
Transportation
________________________
Parts 572 to 999
Revised as of October 1, 2019
Containing a codification of documents of general
applicability and future effect
As of October 1, 2019
Published by the Office of the Federal Register
National Archives and Records Administration as a
Special Edition of the Federal Register
[[Page ii]]
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[[Page iii]]
Table of Contents
Page
Explanation................................................. v
Title 49:
SUBTITLE B--Other Regulations Relating to Transportation
(Continued)
Chapter V--National Highway Traffic Safety
Administration, Department of Transportation,
(Continued) 5
Chapter VI--Federal Transit Administration,
Department of Transportation 447
Chapter VII--National Railroad Passenger Corporation
(AMTRAK) 607
Chapter VIII--National Transportation Safety Board 625
Finding Aids:
Table of CFR Titles and Chapters........................ 723
Alphabetical List of Agencies Appearing in the CFR...... 743
List of CFR Sections Affected........................... 753
[[Page iv]]
----------------------------
Cite this Code: CFR
To cite the regulations in
this volume use title,
part and section number.
Thus, 49 CFR 572.1 refers
to title 49, part 572,
section 1.
----------------------------
[[Page v]]
EXPLANATION
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Each volume of the Code is revised at least once each calendar year
and issued on a quarterly basis approximately as follows:
Title 1 through Title 16.................................as of January 1
Title 17 through Title 27..................................as of April 1
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[[Page vi]]
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[[Page vii]]
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Oliver A. Potts,
Director,
Office of the Federal Register
October 1, 2019.
[[Page ix]]
THIS TITLE
Title 49--Transportation is composed of nine volumes. The parts in
these volumes are arranged in the following order: Parts 1-99, parts
100-177, parts 178-199, parts 200-299, parts 300-399, parts 400-571,
parts 572-999, parts 1000-1199, and part 1200 to end. The first volume
(parts 1-99) contains current regulations issued under subtitle A--
Office of the Secretary of Transportation; the second volume (parts 100-
177) and the third volume (parts 178-199) contain the current
regulations issued under chapter I--Pipeline and Hazardous Materials
Safety Administration (DOT); the fourth volume (parts 200-299) contains
the current regulations issued under chapter II--Federal Railroad
Administration (DOT); the fifth volume (parts 300-399) contains the
current regulations issued under chapter III--Federal Motor Carrier
Safety Administration (DOT); the sixth volume (parts 400-571) contains
the current regulations issued under chapter IV--Coast Guard (DHS), and
some of chapter V--National Highway Traffic Safety Administration (DOT);
the seventh volume (parts 572-999) contains the rest of the regulations
issued under chapter V--National Highway Traffic Safety Administration
(DOT), and the current regulations issued under chapter VI--Federal
Transit Administration (DOT), chapter VII--National Railroad Passenger
Corporation (AMTRAK), and chapter VIII--National Transportation Safety
Board; the eighth volume (parts 1000-1199) contains some of the current
regulations issued under chapter X--Surface Transportation Board and the
ninth volume (part 1200 to end) contains the rest of the current
regulations issued under chapter X--Surface Transportation Board,
chapter XI--Research and Innovative Technology Administration (DOT), and
chapter XII--Transportation Security Administration (DHS). The contents
of these volumes represent all current regulations codified under this
title of the CFR as of October 1, 2019.
In the volume containing parts 100-177, see Sec. 172.101 for the
Hazardous Materials Table. The Federal Motor Vehicle Safety Standards
appear in part 571.
For this volume, Susannah C. Hurley was Chief Editor. The Code of
Federal Regulations publication program is under the direction of John
Hyrum Martinez, assisted by Stephen J. Frattini.
[[Page 1]]
TITLE 49--TRANSPORTATION
(This book contains parts 572 to 999)
--------------------------------------------------------------------
SUBTITLE B--Other Regulations Relating to Transportation (Continued)
Part
chapter v--National Highway Traffic Safety Administration,
Department of Transportation (Continued).................. 572
chapter vi--Federal Transit Administration, Department of
Transportation............................................ 601
chapter vii--National Railroad Passenger Corporation
(AMTRAK).................................................. 700
chapter viii--National Transportation Safety Board.......... 800
[[Page 3]]
Subtitle B--Other Regulations Relating to Transportation (Continued)
[[Page 5]]
CHAPTER V--NATIONAL HIGHWAY TRAFFIC SAFETY ADMINISTRATION, DEPARTMENT OF
TRANSPORTATION (CONTINUED)
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Part Page
572 Anthropomorphic test devices................ 7
573 Defect and noncompliance responsibility and
reports................................. 173
574 Tire identification and recordkeeping....... 188
575 Consumer information........................ 198
576 Record retention............................ 256
577 Defect and noncompliance notification....... 257
578 Civil and criminal penalties................ 268
579 Reporting of information and communications
about potential defects................. 273
580 Odometer disclosure requirements............ 300
581 Bumper standard............................. 309
582 Insurance cost information regulation....... 312
583 Automobile parts content labeling........... 314
585 Phase-in reporting requirements............. 325
586 [Reserved]
587 Deformable barriers......................... 344
588 Child restraint systems recordkeeping
requirements............................ 353
589-590 [Reserved]
591 Importation of vehicles and equipment
subject to Federal safety, bumper and
theft prevention standards.............. 354
592 Registered importers of vehicles not
originally manufactured to conform to
the Federal motor vehicle safety
standards............................... 366
593 Determinations that a vehicle not originally
manufactured to conform to the Federal
motor vehicle safety standards is
eligible for importation................ 380
594 Schedule of fees authorized by 49 U.S.C.
30141................................... 392
595 Make inoperative exemptions................. 396
596-598 [Reserved]
[[Page 6]]
599 Requirements and procedures for Consumer
Assistance to Recycle and Save Act
program................................. 414
[[Page 7]]
PART 572_ANTHROPOMORPHIC TEST DEVICES--Table of Contents
Subpart A_General
Sec.
572.1 Scope.
572.2 Purpose.
572.3 Application.
572.4 Terminology.
Subpart B_50th Percentile Male
572.5 General description.
572.6 Head.
572.7 Neck.
572.8 Thorax.
572.9 Lumbar spine, abdomen, and pelvis.
572.10 Limbs.
572.11 Test conditions and instrumentation.
Subpart C_3-Year-Old Child
572.15 General description.
572.16 Head.
572.17 Neck.
572.18 Thorax.
572.19 Lumbar spine, abdomen and pelvis.
572.20 Limbs.
572.21 Test conditions and instrumentation.
Subpart D_6-Month-Old Infant
572.25 General description.
Subpart E_Hybrid III Test Dummy
572.30 Incorporated materials.
572.31 General description.
572.32 Head.
572.33 Neck.
572.34 Thorax.
572.35 Limbs.
572.36 Test conditions and instrumentation.
Subpart F_Side Impact Dummy 50th Percentile Male
572.40 Incorporated materials.
572.41 General description.
572.42 Thorax.
572.43 Lumbar spine and pelvis.
572.44 Instrumentation and test conditions.
Appendix A to Subpart F of Part 572
Subparts G-H [Reserved]
Subpart I_6-Year-Old Child
572.70 Incorporation by reference.
572.71 General description.
572.72 Head assembly and test procedure.
572.73 Neck assembly and test procedure.
572.74 Thorax assembly and test procedure.
572.75 Lumbar spine, abdomen, and pelvis assembly and test procedure.
572.76 Limbs assembly and test procedure.
572.77 Instrumentation.
572.78 Performance test conditions.
Figures to Subpart I of Part 572
Subpart J_9-Month Old Child
572.80 Incorporated materials.
572.81 General description.
572.82 Head.
572.83 Head-neck.
572.84 Thorax.
572.85 Lumbar spine flexure.
572.86 Test conditions and dummy adjustment.
Subpart K_Newborn Infant
572.90 Incorporation by reference.
572.91 General description.
Subpart L_Free Motion Headform
572.100 Incorporation by reference.
572.101 General description.
572.102 Drop test.
572.103 Test conditions and instrumentation.
Subpart M_Side Impact Hybrid Dummy 50th Percentile Male
572.110 Materials incorporated by reference.
572.111 General description.
572.112 Head assembly.
572.113 Neck assembly.
572.114 Thorax.
572.115 Lumbar spine and pelvis.
572.116 Instrumentation and test conditions.
Subpart N_Six-year-old Child Test Dummy, Beta Version
572.120 Incorporation by reference.
572.121 General description.
572.122 Head assembly and test procedure.
572.123 Neck assembly and test procedure.
572.124 Thorax assembly and test procedure.
572.125 Upper and lower torso assemblies and torso flexion test
procedure.
572.126 Knees and knee impact test procedure.
572.127 Test conditions and instrumentation.
Figures to Subpart N of Part 572
Subpart O_Hybrid III 5th Percentile Female Test Dummy, Alpha Version
572.130 Incorporation by reference.
572.131 General description.
572.132 Head assembly and test procedure.
572.133 Neck assembly and test procedure.
572.134 Thorax assembly and test procedure.
572.135 Upper and lower torso assemblies and torso flexion test
procedure.
572.136 Knees and knee impact test procedure.
[[Page 8]]
572.137 Test conditions and instrumentation.
Figures to Subpart O of Part 572
Subpart P_Hybrid III 3-Year-Old Child Crash Test Dummy, Alpha Version
572.140 Incorporation by reference.
572.141 General description.
572.142 Head assembly and test procedure.
572.143 Neck-headform assembly and test procedure.
572.144 Thorax assembly and test procedure.
572.145 Upper and lower torso assemblies and torso flexion test
procedure.
572.146 Test condition and instrumentation.
Figures to Subpart P of Part 572
Subpart R_CRABI 12-Month-Old Infant Crash Test Dummy, Alpha Version
572.150 Incorporation by reference.
572.151 General description.
572.152 Head assembly and test procedure.
572.153 Neck-headform assembly and test procedure.
572.154 Thorax assembly and test procedure.
572.155 Test condition and instrumentation.
Figures to Subpart R of Part 572
Subpart S_Hybrid III Six-Year-Old Weighted Child Test Dummy
572.160 Incorporation by reference.
572.161 General description.
572.162 Head assembly and test procedure.
572.163 Neck assembly and test procedure.
572.164 Thorax assembly and test procedure.
572.165 Upper and lower torso assemblies and torso flexion test
procedure.
572.166 Knees and knee impact test procedure.
572.167 Test conditions and instrumentation.
Figures to Subpart S of Part 572
Subpart T_Hybrid III 10-Year-Old Child Test Dummy (HIII 10C)
572.170 Incorporation by reference.
572.171 General description.
572.172 Head assembly and test procedure.
572.173 Neck assembly and test procedure.
572.174 Thorax assembly and test procedure.
572.175 Upper and lower torso assemblies and torso flexion test
procedure.
572.176 Knees and knee impact test procedure.
572.177 Test conditions and instrumentation.
Figures to Subpart T of Part 572
Subpart U_ ES 2re Side Impact Crash Test Dummy, 50th Percentile Adult
Male
572.180 Incorporated materials.
572.181 General description.
572.182 Head assembly.
572.183 Neck assembly.
572.184 Shoulder assembly.
572.185 Thorax (upper torso) assembly.
572.186 Abdomen assembly.
572.187 Lumbar spine.
572.188 Pelvis.
572.189 Instrumentation and test conditions.
Appendix A to Subpart U of Part 572--Figures
Subpart V_SID IIsD Side Impact Crash Test Dummy, Small Adult Female
572.190 Incorporated materials.
572.191 General description.
572.192 Head assembly.
572.193 Neck assembly.
572.194 Shoulder.
572.195 Thorax with arm.
572.196 Thorax without arm.
572.197 Abdomen.
572.198 Pelvis acetabulum.
572.199 Pelvis iliac.
572.200 Instrumentation and test conditions.
Appendix A to Subpart V of Part 572--Figures
Authority: 49 U.S.C. 322, 30111, 30115, 30117 and 30166; delegation
of authority at 49 CFR 1.95
Editorial Notes: 1. For compliance provisions relating to a
vehicle's conformance with the performance requirements of Standard No.
208 (Sec.571.208) relating to the part 572 test dummy, see the
``Effective Date Note'' at subpart E of this part.
2. Nomenclature changes to part 572 appear at 69 FR 18803, Apr. 9,
2004.
Subpart A_General
Sec.572.1 Scope.
This part describes the anthropomorphic test devices that are to be
used for compliance testing of motor vehicles and motor vehicle
equipment with motor vehicle safety standards.
[60 FR 43058, Aug. 18, 1995]
Sec.572.2 Purpose.
The design and performance criteria specified in this part are
intended to describe measuring tools with sufficient precision to give
repetitive and correlative results under similar test conditions and to
reflect adequately the protective performance of a vehicle
[[Page 9]]
or item of motor vehicle equipment with respect to human occupants.
[38 FR 20451, Aug. 1, 1973, as amended at 42 FR 7151, Feb. 7, 1977]
Sec.572.3 Application.
This part does not in itself impose duties or liabilities on any
person. It is a description of tools that measure the performance of
occupant protection systems required by the safety standards that
incorporate it. It is designed to be referenced by, and become a part
of, the test procedures specified in motor vehicle safety standards such
as Standard No. 208, Occupant Crash Protection.
[38 FR 20451, Aug. 1, 1973, as amended at 42 FR 7152, Feb. 7, 1977]
Sec.572.4 Terminology.
(a) The term dummy, when used in this subpart A, refers to any test
device described by this part. The term dummy, when used in any other
subpart of this part, refers to the particular dummy described in that
part.
(b) Terms describing parts of the dummy, such as head, are the same
as names for corresponding parts of the human body.
(c) The term unimodal, when used in subparts C and I, refers to an
acceleration-time curve which has only one prominent peak.
[38 FR 20451, Aug. 1, 1973, as amended at 42 FR 7152, Feb. 7, 1977; 44
FR 76530, Dec. 27, 1979; 56 FR 57836, Nov. 14, 1991]
Subpart B_50th Percentile Male
Sec.572.5 General description.
(a) The dummy consists of the component assemblies specified in
Figure 1, which are described in their entirety by means of
approximately 250 drawings and specifications that are grouped by
component assemblies under the following nine headings:
SA 150 M070--Right arm assembly
SA 150 M071--Left arm assembly
SA 150 M050--Lumbar spine assembly
SA 150 M060--Pelvis and abdomen assembly
SA 150 M080--Right leg assembly
SA 150 M081--Left leg assembly
SA 150 M010--Head assembly
SA 150 M020--Neck assembly
SA 150 M030--Shoulder-thorax assembly.
(b) The drawings and specifications referred to in this regulation
that are not set forth in full are hereby incorporated in this part by
reference. These materials are thereby made part of this regulation. The
Director of the Federal Register has approved the materials incorporated
by reference. For materials subject to change, only the specific version
approved by the Director of the Federal Register and specified in the
regulation are incorporated. A notice of any change will be published in
the Federal Register. As a convenience to the reader, the materials
incorporated by reference are listed in the Finding Aid Table found at
the end of this volume of the Code of Federal Regulations.
(c) The materials incorporated by reference are available for
examination in Docket 73-08, Docket Section, National Highway Traffic
Safety Administration, Room 5109, 400 Seventh Street SW., Washington,
DC, 20590. Copies may be obtained from Rowley-Scher Reprographics, Inc.,
1216 K Street NW., Washington, DC 20005 ((202) 628-6667). The drawings
and specifications are also on file in the reference library of the
Office of the Federal Register, National Archives and Records
Administration, Washington, DC.
(d) Adjacent segments are joined in a manner such that throughout
the range of motion and also under crash impact conditions there is no
contact between metallic elements except for contacts that exist under
static conditions.
(e) The structural properties of the dummy are such that the dummy
conforms to this part in every respect both before and after being used
in vehicle tests specified in Standard No. 208 of this chapter
(571.208).
(f) A specimen of the dummy is available for surface measurements
and access can be arranged by contacting: Office of Vehicle Safety
Standards, National Highway Traffic Safety Administration, 400 Seventh
Street, SW., Washington, DC 20590.
[50 FR 25423, June 19, 1985]
Sec.572.6 Head.
(a) The head consists of the assembly shown as number SA 150 M010 in
Figure
[[Page 10]]
1 and conforms to each of the drawings subtended by number SA 150 M010.
(b) When the head is dropped from a height of 10 inches in
accordance with paragraph (c) of this section, the peak resultant
accelerations at the location of the accelerometers mounted in the head
form in accordance with Sec.572.11(b) shall be not less than 210g, and
not more than 260g. The acceleration/time curve for the test shall be
unimodal and shall lie at or above the 100g level for an interval not
less than 0.9 milliseconds and not more than 1.5 milliseconds. The
lateral acceleration vector shall not exceed 10g.
(c) Test procedure:
(1) Suspend the head as shown in Figure 2, so that the lowest point
on the forehead is 0.5 inches below the lowest point on the dummy's nose
when the midsagittal plane is vertical.
(2) Drop the head from the specified height by means that ensures
instant release onto a rigidly supported flat horizontal steel plate, 2
inches thick and 2 feet square, which has a clean, dry surface and any
microfinish of not less than 8 microinches (rms) and not more than 80
microinches (rms).
(3) Allow a time period of at least 2 hours between successive tests
on the same head.
[38 FR 20451, Aug. 1, 1973, as amended at 42 FR 7152, Feb. 7, 1977]
Sec.572.7 Neck.
(a) The neck consists of the assembly shown as number SA 150 M020 in
Figure 1 and conforms to each of the drawings subtended by number SA 150
M020.
(b) When the neck is tested with the head in accordance with
paragraph (c) of this section, the head shall rotate in reference to the
pendulum's longitudinal centerline a total of 68[deg] 5[deg] about its center of gravity, rotating to the
extent specified in the following table at each indicated point in time,
measured from impact, with a chordal displacement measured at its center
of gravity that is within the limits specified. The chordal displacement
at time T is defined as the straight line distance between (1) the
position relative to the pendulum arm of the head center of gravity at
time zero, and (2) the position relative to the pendulum arm of the head
center of gravity at time T as illustrated by Figure 3. The peak
resultant acceleration recorded at the location of the accelerometers
mounted in the head form in accordance with Sec.572.11(b) shall not
exceed 26g. The pendulum shall not reverse direction until the head's
center of gravity returns to the original zero time position relative to
the pendulum arm.
------------------------------------------------------------------------
Time (ms) (2 (inches 0.5)
------------------------------------------------------------------------
0............................. 0 0.0
30............................ 30 2.6
60............................ 46 4.8
Maximum....................... 60 5.5
60............................ 75 4.8
30............................ 95 2.6
0............................. 112 0.0
------------------------------------------------------------------------
(c) Test procedure: (1) Mount the head and neck on a rigid pendulum
as specified in Figure 4, so that the head's midsagittal plane is
vertical and coincides with the plane of motion of the pendulum's
longitudinal centerline. Mount the neck directly to the pendulum as
shown in Figure 4.
(2) Release the pendulum and allow it to fall freely from a height
such that the velocity at impact is 23.5 2.0 feet
per second (fps), measured at the center of the accelerometer specified
in Figure 4.
(3) Decelerate the pendulum to a stop with an acceleration-time
pulse described as follows:
(i) Establish 5g and 20g levels on the a-t curve.
(ii) Establish t1 at the point where the rising a-t curve
first crosses the 5g level, t2 at the point where the rising
a-t curve first crosses the 20g level, t2 at the point where
the decaying a-t curve last crosses the 20g level, and t4 at
the point where the decaying a-t curve first crosses the 5g level.
(iii) t2-t1 shall be not more than 3
milliseconds.
(iv) t3-t2 shall be not less than 25
milliseconds and not more than 30 milliseconds.
(v) t4-t3 shall be not more than 10
milliseconds.
(vi) The average deceleration between t2 and
t3 shall be not less than 20g and not more than 24g.
[[Page 11]]
(4) Allow the neck to flex without impact of the head or neck with
any object other than the pendulum arm.
[38 FR 20451, Aug. 1, 1973, as amended at 42 FR 7152, Feb. 7, 1977; 42
FR 12176, Mar. 3, 1977; 45 FR 40596, June 16, 1980]
Sec.572.8 Thorax.
(a) The thorax consists of the assembly shown as number SA 150 M030
in Figure 1, and conforms to each of the drawings subtended by number SA
150 M030.
(b) The thorax contains enough unobstructed interior space behind
the rib cage to permit the midpoint of the sternum to be depressed 2
inches without contact between the rib cage and other parts of the dummy
or its instrumentation, except for instruments specified in paragraph
(d)(7) of this section.
(c) When impacted by a test probe conforming to Sec.572.11(a) at
14 fps and at 22 fps in accordance with paragraph (d) of this section,
the thorax shall resist with forces measured by the test probe of not
more than 1450 pounds and 2250 pounds, respectively, and shall deflect
by amounts not greater than 1.1 inches and 1.7 inches, respectively. The
internal hysteresis in each impact shall not be less than 50 percent and
not more than 70 percent.
(d) Test procedure: (1) With the dummy seated without back support
on a surface as specified in Sec.572.11(i) and in the orientation
specified in Sec.572.11(i), adjust the dummy arms and legs until they
are extended horizontally forward parallel to the midsagittal plane.
(2) Place the longitudinal center line of the test probe so that it
is 17.7 0.1 inches above the seating surface at
impact.
(3) Align the test probe specified in Sec.572.11(a) so that at
impact its longitudinal centerline coincides within 2 degrees of a
horizontal line in the dummy's midsagittal plane.
(4) Adjust the dummy so that the surface area on the thorax
immediately adjacent to the projected longitudinal center line of the
test probe is vertical. Limb support, as needed to achieve and maintain
this orientation, may be provided by placement of a steel rod of any
diameter not less than one-quarter of an inch and not more than three-
eighths of an inch, with hemispherical ends, vertically under the limb
at its projected geometric center.
(5) Impact the thorax with the test probe so that its longitudinal
centerline falls within 2 degrees of a horizontal line in the dummy's
midsagittal plane at the moment of impact.
(6) Guide the probe during impact so that it moves with no
significant lateral, vertical, or rotational movement.
(7) Measure the horizontal deflection of the sternum relative to the
thoracic spine along the line established by the longitudinal centerline
of the probe at the moment of impact, using a potentiometer mounted
inside the sternum.
(8) Measure hysteresis by determining the ratio of the area between
the loading and unloading portions of the force deflection curve to the
area under the loading portion of the curve.
[38 FR 20451, Aug. 1, 1973, as amended at 42 FR 7152, Feb. 7, 1977]
Sec.572.9 Lumbar spine, abdomen, and pelvis.
(a) The lumbar spine, abdomen, and pelvis consist of the assemblies
designated as numbers SA 150 M050 and SA 150 M060 in Figure 1 and
conform to the drawings subtended by these numbers.
(b) When subjected to continuously applied force in accordance with
paragraph (c) of this section, the lumbar spine assembly shall flex by
an amount that permits the rigid thoracic spine to rotate from its
initial position in accordance with Figure 11 by the number of degrees
shown below at each specified force level, and straighten upon removal
of the force to within 12 degrees of its initial position in accordance
with Figure 11.
------------------------------------------------------------------------
Force (6
pounds)
------------------------------------------------------------------------
0.................................................... 0
20................................................... 28
30................................................... 40
40................................................... 52
------------------------------------------------------------------------
(c) Test procedure: (1) Assemble the thorax, lumbar spine, pelvic,
and upper leg assemblies (above the femur force transducers), ensuring
that all component surfaces are clean, dry, and untreated unless
otherwise specified, and attach them to the horizontal fixture
[[Page 12]]
shown in Figure 5 at the two link rod pins and with the mounting
brackets for the lumbar test fixtures illustrated in Figures 6 to 9.
(2) Attach the rear mounting of the pelvis to the pelvic instrument
cavity rear face at the four \1/4\ cap screw holes and attach
the front mounting at the femur axial rotation joint. Tighten the
mountings so that the pelvic-lumbar adapter is horizontal and adjust the
femur friction plungers at each hip socket joint to 240 inch-pounds
torque.
(3) Flex the thorax forward 50[deg] and then rearward as necessary
to return it to its initial position in accordance with Figure 11
unsupported by external means.
(4) Apply a forward force perpendicular to the thorax instrument
cavity rear face in the midsagittal plane 15 inches above the top
surface of the pelvic-lumbar adapter. Apply the force at any torso
deflection rate between .5 and 1.5 degrees per second up to 40[deg] of
flexion but no further, continue to apply for 10 seconds that force
necessary to maintain 40[deg] of flexion, and record the force with an
instrument mounted to the thorax as shown in Figure 5. Release all force
as rapidly as possible and measure the return angle 3 minutes after the
release.
(d) When the abdomen is subjected to continuously applied force in
accordance with paragraph (e) of this section, the abdominal force-
deflection curve shall be within the two curves plotted in Figure 10.
(e) Test procedure: (1) Place the assembled thorax, lumbar spine and
pelvic assemblies in a supine position on a flat, rigid, smooth, dry,
clean horizontal surface, ensuring that all component surfaces are
clean, dry, and untreated unless otherwise specified.
(2) Place a rigid cylinder 6 inches in diameter and 18 inches long
transversely across the abdomen, so that the cylinder is symmetrical
about the midsagittal plane, with its longitudinal centerline horizontal
and perpendicular to the midsagittal plane at a point 9.2 inches above
the bottom line of the buttocks, measured with the dummy positioned in
accordance with Figure 11.
(3) Establish the zero deflection point as the point at which a
force of 10 pounds has been reached.
(4) Apply a vertical downward force through the cylinder at any rate
between 0.25 and 0.35 inches per second.
(5) Guide the cylinder so that it moves without significant lateral
or rotational movement.
[42 FR 7152, Feb. 7, 1977]
Sec.572.10 Limbs.
(a) The limbs consist of the assemblies shown as numbers SA 150
M070, SA 150 M071, SA 150 M080, and SA 150 M081 in Figure 1 and conform
to the drawings subtended by these numbers.
(b) When each knee is impacted at 6.9 ft/sec. in accordance with
paragraph (c) of this section, the maximum force on the femur shall be
not more than 2500 pounds and not less than 1850 pounds, with a duration
above 1000 pounds of not less than 1.7 milliseconds.
(c) Test procedure: (1) Seat the dummy without back support on a
surface as specified in Sec.572.11(i) that is 17.3 0.2 inches above a horizontal surface, oriented as
specified in Sec.572.11(i), and with the hip joint adjustment at any
setting between 1g and 2g. Place the dummy legs in planes parallel to
its midsagittal plane (knee pivot centerline perpendicular to the
midsagittal plane) and with the feet flat on the horizontal surface.
Adjust the feet and lower legs until the lines between the midpoints of
the knee pivots and the ankle pivots are at any angle not less than 2
degrees and not more than 4 degrees rear of the vertical, measured at
the centerline of the knee pivots.
(2) Reposition the dummy if necessary so that the rearmost point of
the lower legs at the level one inch below the seating surface remains
at any distance not less than 5 inches and not more than 6 inches
forward of the forward edge of the seat.
(3) Align the test probe specified in Sec.572.11(a) so that at
impact its longitudinal centerline coincides within 2[deg] with the longitudinal centerline of the femur.
(4) Impact the knee with the test probe moving horizontally and
parallel to the midsagittal plane at the specified velocity.
[[Page 13]]
(5) Guide the probe during impact so that it moves with no
significant lateral, vertical, or rotational movement.
[38 FR 20451, Aug. 1, 1973, as amended at 42 FR 7153, Feb. 7, 1977]
Sec.572.11 Test conditions and instrumentation.
(a) The test probe used for thoracic and knee impact tests is a
cylinder 6 inches in diameter that weighs 51.5 pounds including
instrumentation. Its impacting end has a flat right face that is rigid
and that has an edge radius of 0.5 inches.
(b) Accelerometers are mounted in the head on the horizontal
transverse bulkhead shown in the drawings subreferenced under assembly
No. SA 150 M010 in Figure 1, so that their sensitive axes intersect at a
point in the midsagittal plane 0.5 inches above the horizontal bulkhead
and 1.9 inches ventral of the vertical mating surface of the skull with
the skull cover. One accelerometer is aligned with its sensitive axis
perpendicular to the horizontal bulkhead in the midsagittal plane and
with its seismic mass center at any distance up to 0.3 inches superior
to the axial intersection point. Another accelerometer is aligned with
its sensitive axis parallel to the horizontal bulkhead and perpendicular
to the midsagittal plane, and with its seismic mass center at any
distance up to 1.3 inches to the left of the axial intersection point
(left side of dummy is the same as that of man). A third accelerometer
is aligned with its sensitive axis parallel to the horizontal bulkhead
in the midsagittal plane, and with its seismic mass center at any
distance up to 1.3 inches dorsal to the axial intersection point.
(c) Accelerometers are mounted in the thorax by means of a bracket
attached to the rear vertical surface (hereafter ``attachment surface'')
of the thoracic spine so that their sensitive axes intersect at a point
in the midsagittal plane 0.8 inches below the upper surface of the plate
to which the neck mounting bracket is attached and 3.2 inches
perpendicularly forward of the surface to which the accelerometer
bracket is attached. One accelerometer has its sensitive axis oriented
parallel to the attachment surface in the midsagittal plane, with its
seismic mass center at any distance up to 1.3 inches inferior to the
intersection of the sensitive axes specified above. Another
accelerometer has its sensitive axis oriented parallel to the attachment
surface and perpendicular to the midsagittal plane, with its seismic
mass center at any distance up to 0.2 inches to the right of the
intersection of the sensitive axes specified above. A third
accelerometer has its sensitive axis oriented perpendicular to the
attachment surface in the midsagittal plane, with its seismic mass
center at any distance up to 1.3 inches dorsal to the intersection of
the sensitive axes specified above. Accelerometers are oriented with the
dummy in the position specified in Sec.572.11(i).
(d) A force-sensing device is mounted axially in each femur shaft so
that the transverse centerline of the sensing element is 4.25 inches
from the knee's center of rotation.
(e) The outputs of acceleration and force-sensing devices installed
in the dummy and in the test apparatus specified by this part are
recorded in individual data channels that conform to the requirements of
SAE Recommended Practice J211a, December 1971, with channel classes as
follows:
(1) Head acceleration--Class 1000.
(2) Pendulum acceleration--Class 60.
(3) Thorax acceleration--Class 180.
(4) Thorax compression--Class 180.
(5) Femur force--Class 600.
(f) The mountings for sensing devices have no resonance frequency
within a range of 3 times the frequency range of the applicable channel
class.
(g) Limb joints are set at 1g, barely restraining the weight of the
limb when it is extended horizontally. The force required to move a limb
segment does not exceed 2g throughout the range of limb motion.
(h) Performance tests are conducted at any temperature from 66
[deg]F to 78 [deg]F and at any relative humidity from 10 percent to 70
percent after exposure of the dummy to these conditions for a period of
not less than 4 hours.
(i) For the performance tests specified in Sec. Sec.572.8, 572.9,
and 572.10, the dummy is positioned in accordance with Figure 11 as
follows:
[[Page 14]]
(1) The dummy is placed on a flat, rigid, smooth, clean, dry,
horizontal, steel test surface whose length and width dimensions are not
less than 16 inches, so that the dummy's midsagittal plane is vertical
and centered on the test surface and the rearmost points on its lower
legs at the level of the test surface are at any distance not less than
5 inches and not more than 6 inches forward of the forward edge of the
test surface.
(2) The pelvis is adjusted so that the upper surface of the lumbar-
pelvic adapter is horizontal.
(3) The shoulder yokes are adjusted so that they are at the midpoint
of their anterior-posterior travel with their upper surfaces horizontal.
(4) The dummy is adjusted so that the rear surfaces of the shoulders
and buttocks are tangent to a transverse vertical plane.
(5) The upper legs are positioned symmetrically about the
midsagittal plane so that the distance between the knee pivot bolt heads
is 11.6 inches.
(6) The lower legs are positioned in planes parallel to the
midsagittal plane so that the lines between the midpoint of the knee
pivots and the ankle pivots are vertical.
(j) The dummy's dimensions, as specified in drawing number SA 150
M002, are determined as follows:
(1) With the dummy seated as specified in paragraph (i) of this
section, the head is adjusted and secured so that its occiput is 1.7
inches forward of the transverse vertical plane with the vertical mating
surface of the skull with its cover parallel to the transverse vertical
plane.
(2) The thorax is adjusted and secured so that the rear surface of
the chest accelerometer mounting cavity is inclined 3[deg] forward of
vertical.
(3) Chest and waist circumference and chest depth measurements are
taken with the dummy positioned in accordance with paragraphs (j) (1)
and (2) of this section.
(4) The chest skin and abdominal sac are removed and all following
measurements are made without them.
(5) Seated height is measured from the seating surface to the
uppermost point on the head-skin surface.
(6) Shoulder pivot height is measured from the seating surface to
the center of the arm elevation pivot.
(7) H-point locations are measured from the seating surface to the
center of the holes in the pelvis flesh covering in line with the hip
motion ball.
(8) Knee pivot distance from the backline is measured to the center
of the knee pivot bolt head.
(9) Knee pivot distance from floor is measured from the center of
the knee pivot bolt head to the bottom of the heel when the foot is
horizontal and pointing forward.
(10) Shoulder width measurement is taken at arm elevation pivot
center height with the centerlines between the elbow pivots and the
shoulder pivots vertical.
(11) Hip width measurement is taken at widest point of pelvic
section.
(k) Performance tests of the same component, segment, assembly, or
fully assembled dummy are separated in time by a period of not less than
30 minutes unless otherwise noted.
(l) Surfaces of dummy components are not painted except as specified
in this part or in drawings subtended by this part.
[[Page 15]]
[GRAPHIC] [TIFF OMITTED] TC01AU91.152
[[Page 16]]
[GRAPHIC] [TIFF OMITTED] TC01AU91.153
[[Page 17]]
[GRAPHIC] [TIFF OMITTED] TC01AU91.154
[[Page 18]]
[GRAPHIC] [TIFF OMITTED] TC01AU91.155
[[Page 19]]
[GRAPHIC] [TIFF OMITTED] TC01AU91.156
[[Page 20]]
[GRAPHIC] [TIFF OMITTED] TC01AU91.157
[38 FR 20451, Aug. 1, 1973, as amended at 42 FR 7153, Feb. 7, 1977]
Subpart C_3-Year-Old Child
Source: 44 FR 76530, Dec. 27, 1979, unless otherwise noted.
Sec.572.15 General description.
(a) The dummy consists of the component assemblies specified in
drawing SA 103C 001, which are described in their entirety by means of
approximately 122 drawings and specifications
[[Page 21]]
and an Operation and Maintenance Manual, dated May 28, 1976. The
drawings and specifications are grouped by component assemblies under
the following thirteen headings:
SA 103C 010 Head Assembly
SA 103C 020 Neck Assembly
SA 103C 030 Torso Assembly
SA 103C 041 Upper Arm Assembly Left
SA 103C 042 Upper Arm Assembly Right
SA 103C 051 Forearm Hand Assembly Left
SA 103C 052 Forearm Hand Assembly Right
SA 103C 061Upper Leg Assembly Left
SA 103C 062 Upper Leg Assembly Right
SA 103C 071 Lower Leg Assembly Left
SA 103C 072 Lower Leg Assembly Right
SA 103C 081 Foot Assembly left
SA 103C 082 Foot Assembly Right.
(b) The drawings, specifications, and operation and maintenance
manual referred to in this regulation that are not set forth in full are
hereby incorporated in this part by reference. These materials are
thereby made part of this regulation. The Director of the Federal
Register has approved the materials incorporated by reference. For
materials subject to change, only the specific version approved by the
Director of the Federal Register and specified in the regulation are
incorporated. A notice of any change will be published in the Federal
Register. As a convenience to the reader, the materials incorporated by
reference are listed in the Finding Aid Table found at the end of this
volume of the Code of Federal Regulations.
(c) The materials incorporated by reference are available for
examination in Docket 78-09, Room 5109, Docket Section, National Highway
Traffic Safety Administration, 400 Seventh Street SW., Washington, DC
20590. Copies may be obtained from Rowley-Scher Reprographics, Inc.,
1216 K Street NW., Washington, DC 20005 ((202) 628-6667). The materials
are also on file in the reference library of the Office of the Federal
Register, National Archives and Records Administration, Washington, DC.
(d) Adjacent segments are joined in a manner such that throughout
the range of motion and also under simulated crash-impact conditions
there is no contact between metallic elements except for contacts that
exist under static conditions.
(e) The structural properties of the dummy are such that the dummy
conforms to this part in every respect both before and after being used
in vehicle tests specified in Standard No. 213 of this chapter (Sec.
571.213).
(f) The patterns of all cast and molded parts for reproduction of
the molds needed in manufacturing of the dummies can be obtained on a
loan basis by manufacturers of the testes dummies, or others if need is
shown, from: Office of Vehicle Safety Standards, National Highway
Traffic Safety Administration, 400 Seventh Street SW., Washington, DC
20590.
[50 FR 25423, June 19, 1985]
Sec.572.16 Head.
(a) The head consists of the assembly designated as SA 103C 010 on
drawing No. SA 103C 001, and conforms to either--
(1) Each item specified on drawing SA 103C 002(B), sheet 8; or
(2) Each item specified on drawing SA 103C 002, sheet 8.
(b) When the head is impacted by a test probe specified in Sec.
572.21(a)(1) at 7 fps, then the peak resultant acceleration measured at
the location of the accelerometer mounted in the headform according to
Sec.572.21(b) is not less than 95g and not more than 118g.
(1) The recorded acceleration-time curve for this test is unimodal
at or above the 50g level, and lies at or above that level for
intervals:
(i) In the case of the head assembly specified in paragraph (a)(1)
of this section, not less than 1.3 milliseconds and not more than 2.0
milliseconds;
(ii) In the case of the head assembly specified in paragraph (a)(2)
of this section, not less than 2.0 milliseconds and not more than 3.0
milliseconds.
(2) The lateral acceleration vector does not exceed 7g.
(c) Test procedure. (1) Seat the dummy on a seating surface having a
back support as specified in Sec.572.21(h) and orient the dummy in
accordance with Sec.572.21(h) and adjust the joints of the limbs at
any setting between 1g and 2g, which just supports the limbs' weight
when the limbs are extended horizontally forward.
[[Page 22]]
(2) Adjust the test probe so that its longitudinal centerline is at
the forehead at the point of orthogonal intersection of the head
midsagittal plane and the transverse plane which is perpendicular to the
``Z'' axis of the head (longitudinal centerline of the skull anchor) and
is located 0.6 0.1 inches above the centers of the
head center of gravity reference pins and coincides within 2 degrees
with the line made by the intersection of horizontal and midsagittal
planes passing through this point.
(3) Adjust the dummy so that the surface area on the forehead
immediately adjacent to the projected longitudinal centerline of the
test probe is vertical.
(4) Impact the head with the test probe so that at the moment of
impact the probe's longitudinal centerline falls within 2 degrees of a
horizontal line in the dummy's midsagittal plane.
(5) Guide the probe during impact so that it moves with no
significant lateral, vertical, or rotational movement.
(6) Allow a time period of at least 20 minutes between successive
tests of the head.
[44 FR 76530, Dec. 27, 1979; 45 FR 43353, June 26, 1980, as amended at
45 FR 82267, Dec. 15, 1980; 55 FR 30468, July 26, 1990]
Sec.572.17 Neck.
(a)(1) The neck for use with the head assembly described in Sec.
572.16(a)(1) consists of the assembly designated as SA 103C 020 on
drawing No. SA 103C 001, conforms to each item specified on drawing No.
SA 103C 002(B), sheet 9.
(2) The neck for use with the head assembly described in Sec.
572.16(a)(2) consists of the assembly designated as SA 103C 020 on
drawing No. SA 103C 001, and conforms to each item specified on drawing
No. SA 103C 002, sheet 9.
(b) When the head-neck assembly is tested in accordance with
paragraph (c) of this section, the head shall rotate in reference to the
pendulum's longitudinal centerline a total of 84 degrees 8 degrees about its center of gravity, rotating to the
extent specified in the following table at each indicated point in time,
measured from impact, with the chordal displacement measured at its
center of gravity. The chordal displacement at time T is defined as the
straight line distance between (1) the position relative to the pendulum
arm of the head center of gravity at time zero, and (2) the position
relative to the pendulum arm of the head center of gravity at time T as
illustrated by figure 3. The peak resultant acceleration recorded at the
location of the accelerometers mounted in the headform in accordance
with Sec.572.21(b) shall not exceed 30g. The pendulum shall not
reverse direction until the head's center of gravity returns to the
original zero time position relative to the pendulum arm.
------------------------------------------------------------------------
Time (ms) (2 (inches 0.8)
------------------------------------------------------------------------
0............................. 0 0
30............................ 21 2.2
60............................ 36 4.3
Maximum....................... 62 5.8
60............................ 91 4.3
30............................ 108 2.2
0............................. 123 0
------------------------------------------------------------------------
(c) Test procedure. (1) Mount the head and neck on a rigid pendulum
as specified in Figure 4, so that the head's midsagittal plane is
vertical and coincides with the plane of motion of the pendulum's
longitudinal centerline. Mount the neck directly to the pendulum as
shown in Figure 15.
(2) Release the pendulum and allow it to fall freely from a height
such that the velocity at impact is 17.00 1.0 feet
per second (fps), measured at the center of the accelerometer specified
in figure 4.
(3) Decelerate the pendulum to a stop with an acceleration-time
pulse described as follows:
(i) Establish 5g and 20g levels on the a-t curve.
(ii) Establish t1 at the point where the a-t curve first
crosses the 5g level, t2 at the point where the rising a-t
curve first crosses the 20g level, t3 at the point where the
decaying a-t curve last crosses the 20g level, and t4 at the
point where the decaying a-t curve first crosses the 5g level.
(iii) t2-t1, shall be not more than 4
milliseconds.
(iv) t3-t2, shall be not less than 18 and not
more than 21 milliseconds.
(v) t4-t3, shall be not more than 5
milliseconds.
[[Page 23]]
(vi) The average deceleration between t2 and
t3 shall be not less than 20g and not more then 34g.
(4) Allow the neck to flex without contact of the head or neck with
any object other than the pendulum arm.
(5) Allow a time period of at least 1 hour between successive tests
of the head and neck.
[44 FR 76530, Dec. 27, 1979; 45 FR 43353, June 26, 1980, as amended at
55 FR 30468, July 26, 1990]
Sec.572.18 Thorax.
(a) The thorax consists of the part of the torso shown in assembly
drawing SA 103C 001 by number SA 103C 030 and conforms to each of the
applicable drawings listed under this number on drawing SA 103C 002,
sheets 10 and 11.
(b) When impacted by a test probe conforming to Sec.572.21(a) at
13 fps in accordance with paragraph (c) of this section, the peak
resultant accelerations at the location of the accelerometers mounted in
the chest cavity in accordance with Sec.572.21(c) shall be not less
than 50g and not more than 70g. The acceleration-time curve for the test
shall be unimodal at or above the 30g level and shall lie at or above
the 30g level for an interval not less than 2.5 milliseconds and not
more than 4.0 milliseconds. The lateral acceleration shall not exceed
5g.
(c) Test procedure. (1) With the dummy seated without back support
on a surface as specified in Sec.572.21(h) and oriented as specified
in Sec.572.21(h), adjust the dummy arms and legs until they are
extended horizontally forward parallel to the midsagittal plane. The
joints of the limbs are adjusted at any setting between 1g and 2g, which
just supports the limbs' weight when the limbs are extended horizontally
forward.
(2) Establish the impact point at the chest midsagittal plane so
that it is 1.5 inches below the longitudinal centerline of the bolt that
attaches the top of the ribcage sternum to the thoracic spine box.
(3) Adjust the dummy so that the tangent plane at the surface on the
thorax immediately adjacent to the designated impact point is vertical
and parallel to the face of the test probe.
(4) Place the longitudinal centerline of the test probe to coincide
with the designated impact point and align the test probe so that at
impact its longitudinal centerline coincides within 2 degrees with the
line formed by intersection of the horizontal and midsagittal planes
passing through the designated impact point.
(5) Impact the thorax with the test probe so that at the moment of
impact the probe's longitudinal centerline falls within 2 degrees of a
horizontal line in the dummy midsagittal plane.
(6) Guide the probe during impact so that it moves with no
significant lateral, vertical or rotational movement.
(7) Allow a time period of at least 20 minutes between successive
tests of the chest.
Sec.572.19 Lumbar spine, abdomen and pelvis.
(a) The lumbar spine, abdomen, and pelvis consist of the part of the
torso assembly shown by number SA 103C 030 on drawing SA 103C 001 and
conform to each of the applicable drawings listed under this number on
drawing SA 103C 002, sheets 10 and 11.
(b) When subjected to continuously applied force in accordance with
paragraph (c) of this section, the lumbar spine assembly shall flex by
an amount that permits the rigid thoracic spine to rotate from its
initial position in accordance with Figure 18 of this subpart by 40
degrees at a force level of not less than 34 pounds and not more than 47
pounds, and straighten upon removal of the force to within 5 degrees of
its initial position.
(c) Test procedure. (1) The dummy with lower legs removed is
positioned in an upright seated position on a seat as indicated in
Figure 18, ensuring that all dummy component surfaces are clean, dry and
untreated unless otherwise specified.
(2) Attach the pelvis to the seating surface by a bolt C/328,
modified as shown in Figure 18, and the upper legs at the knee axial
rotation joints by the attachments shown in Figure 18. Tighten the
mountings so that the pelvis-lumbar joining surface is horizontal and
adjust the femur ball-flange screws at each hip socket joint to 50 inch
pounds torque. Remove the head and
[[Page 24]]
the neck and install a cylindrical aluminum adapter 2.0 inches in
diameter and 2.80 inches long in place of the neck.
(3) Flex the thorax forward 50 degrees and then rearward as
necessary to return to its initial position in accordance with Figure 18
unsupported by external means.
(4) Apply a forward pull force in the midsagittal plane at the top
of the neck adapter, so that at 40 degrees of the lumbar spine flexion
the applied force is perpendicular to the thoracic spine box. Apply the
force at any torso deflection rate between 0.5 and 1.5 degrees per
second up to 40 degrees of flexion but no further; continue to apply for
10 seconds the force necessary to maintain 40 degrees of flexion, and
record the highest applied force at that time. Release all force as
rapidly as possible and measure the return angle 3 minutes after the
release.
Sec.572.20 Limbs.
The limbs consist of the assemblies shown on drawing SA 103C 001 as
Nos. SA 103C 041, SA 103C 042, SA 103C 051, SA 103C 052, SA 103C 061, SA
103C 062, SA 103C 071, SA 103C 072, SA 103C 081, SA 103C 082, and
conform to each of the applicable drawings listed under their respective
numbers of the drawing SA 103C 002, sheets 12 through 21.
Sec.572.21 Test conditions and instrumentation.
(a)(1) The test probe used for head and thoracic impact tests is a
cylinder 3 inches in diameter, 13.8 inches long, and weighing 10 lbs., 6
ozs. Its impacting end has a flat right face that is rigid and that has
an edge radius of 0.5 inches.
(2) The head and thorax assembly may be instrumented with a Type A
or Type C accelerometer.
(i) Type A accelerometer is defined in drawing SA-572 S1.
(ii) Type C accelerometer is defined in drawing SA-572 S2.
(b) Head accelerometers. Install one of the triaxial accelerometers
specified in Sec.572.21(a)(2) on a mounting block located on the
horizontal transverse bulkhead as shown in the drawings subreferenced
under assembly SA 103C 010 so that the seismic mass centers of each
sensing element are positioned as specified in this paragraph, relative
to the head accelerometer reference point located at the intersection of
a line connecting the longitudinal centerlines of the transfer pins in
the side of the dummy head with the midsagittal plane of the dummy head.
(1) The sensing elements of the Type C triaxial accelerometer are
aligned as follows:
(i) Align one sensitive axis parallel to the vertical bulkhead and
coincident with the midsagittal plane, with the seismic mass center
located 0.2 inches dorsal to, and 0.1 inches inferior to the head
accelerometer reference point.
(ii) Align the second sensitive axis with the horizontal plane,
perpendicular to the midsagittal plane, with the seismic mass center
located 0.1 inches inferior, 0.4 inches to the right of, and 0.9 inches
dorsal to the head accelerometer reference point.
(iii) Align the third sensitive axis so that it is parallel to the
midsagittal and horizontal planes, with the seismic mass center located
0.1 inches inferior to, 0.6 inches dorsal to, and 0.4 inches to the
right of the head accelerometer reference point.
(iv) All seismic mass centers are positioned with 0.05 inches of the specified locations.
(2) The sensing elements of the Type A triaxial accelerometer are
aligned as follows:
(i) Align one sensitive axis parallel to the vertical bulkhead and
coincident with midsagittal planes, with the seismic mass center located
from 0.2 to 0.47 inches dorsal to, from 0.01 inches inferior to 0.21
inches superior, and from 0.0 to 0.17 inches left of the head
accelerometer reference point.
(ii) Align the second sensitive axis with the horizontal plane,
perpendicular to the midsagittal plane, with the seismic mass center
located 0.1 to 0.13 inches inferior to, 0.17 to 0.4 inches to the right
of, and 0.47 to 0.9 inches dorsal of the head accelerometer reference
point.
(iii) Align the third sensitive axis so that it is parallel to the
midsagittal and horizontal planes, with the seismic mass center located
0.1 to 0.13 inches inferior to, 0.6 to 0.81 inches dorsal to, and from
0.17 inches left to 0.4 inches
[[Page 25]]
right of the head accelerometer reference point.
(c) Thorax accelerometers. Install one of the triaxial
accelerometers specified in Sec.572.21(a)(2) on a mounting plate
attached to the vertical transverse bulkhead shown in the drawing
subreferenced under assembly No. SA 103C 030 in drawing SA 103C 001, so
that the seismic mass centers of each sensing element are positioned as
specified in this paragraph, relative to the thorax accelerometer
reference point located in the midsagital plane 3 inches above the top
surface of the lumbar spine, and 0.3 inches dorsal to the accelerometer
mounting plate surface.
(1) The sensing elements of the Type C triaxial accelerometer are
aligned as follows:
(i) Align one sensitive axis parallel to the vertical bulkhead and
midsagittal planes, with the seismic mass center located 0.2 inches to
the left of, 0.1 inches inferior to, and 0.2 inches ventral to the
thorax accelerometer reference point.
(ii) Align the second sensitive axis so that it is in the horizontal
transverse plane, and perpendicular to the midsagittal plane, with the
seismic mass center located 0.2 inches to the right of, 0.1 inches
inferior to, and 0.2 inches ventral to the thorax accelerometer
reference point.
(iii) Align the third sensitive axis so that it is parallel to the
midsagittal and horizontal planes, with the seismic mass center located
0.2 inches superior to, 0.5 inches to the right of, and 0.1 inches
ventral to the thorax accelerometer reference points.
(iv) All seismic mass centers shall be positioned within 0.05 inches of the specified locations.
(2) The sensing elements of the Type A triaxial accelerometer are
aligned as follows:
(i) Align one sensitive axis parallel to the vertical bulkhead and
midsagittal planes, with the seismic mass center located from 0.2 inches
left to 0.28 inches right, from 0.5 to 0.15 inches inferior to, and from
0.15 to 0.25 inches ventral of the thorax accelerometer reference point.
(ii) Align the second sensitive axis so that it is in the horizontal
transverse plane and perpendicular to the midsagital plane, with the
seismic mass center located from 0.06 inches left to 0.2 inches right
of, from 0.1 inches inferior to 0.24 inches superior, and 0.15 to 0.25
inches ventral to the thorax accelerometer reference point.
(iii) Align the third sensitive axis so that it is parallel to the
midsagital and horizontal planes, with the seismic mass center located
0.15 to 0.25 inches superior to, 0.28 to 0.5 inches to the right of, and
from 0.1 inches ventral to 0.19 inches dorsal to the thorax
accelerometer reference point.
(d) The outputs of accelerometers installed in the dummy, and of
test apparatus specified by this part, are recorded in individual data
channels that conform to the requirements of SAE Recommended Practice
J211a, December 1971, with channel classes as follows:
(1) Head acceleration--Class 1000.
(2) Pendulum acceleration--Class 60.
(3) Thorax acceleration--Class 180.
(e) The mountings for accelerometers have no resonance frequency
less than cut-off 3 times the cut-off frequency of the applicable
channel class.
(f) Limb joints are set at the force between 1-2g, which just
supports the limbs' weight when the limbs are extended horizontally
forward. The force required to move a limb segment does not exceed 2g
throughout the range of limb motion.
(g) Performance tests are conducted at any temperature from 66
[deg]F to 78 [deg]F and at any relative humidity from 10 percent to 70
percent after exposure of the dummy to these conditions for a period of
not less than 4 hours.
(h) For the performance tests specified in Sec. Sec.572.16,
572.18, and 572.19, the dummy is positioned in accordance with Figures
16, 17, and 18 as follows:
(1) The dummy is placed on a flat, rigid, clean, dry, horizontal
surface of teflon sheeting with a smoothness of 40 microinches and whose
length and width dimensions are not less than 16 inches, so that the
dummy's midsagittal plane is vertical and centered on the test surface.
For head tests, the seat has a vertical back support whose top is 12.4
0.2 inches above the seating surface. The rear
surfaces of the dummy's shoulders and buttocks are touching the back
support as
[[Page 26]]
shown in Figure 16. For thorax and lumbar spine tests, the seating
surface is without the back support as shown in Figures 17 and 18,
respectively.
(2) The shoulder yokes are adjusted so that they are at the midpoint
of their anterior-posterior travel with their upper surfaces horizontal.
(3) The dummy is adjusted for head impact and lumbar flexion tests
so that the rear surfaces of the shoulders and buttocks are tangent to a
transverse vertical plane.
(4) The arms and legs are positioned so that their centerlines are
in planes parallel to the midsagittal plane.
(i) The dummy's dimensions are specified in drawings No. SA 103C
002, sheets 22 through 26.
(j) Performance tests of the same component, segment, assembly or
fully assembled dummy are separated in time by a period of not less than
20 minutes unless otherwise specified.
(k) Surfaces of the dummy components are not painted except as
specified in this part or in drawings subtended by this part.
[[Page 27]]
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[[Page 28]]
[GRAPHIC] [TIFF OMITTED] TC01AU91.159
[[Page 29]]
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[[Page 30]]
[GRAPHIC] [TIFF OMITTED] TC01AU91.161
[44 FR 76530, Dec. 27, 1979, as amended at 45 FR 82267, Dec. 15, 1980;
55 FR 30468, July 26, 1990]
Subpart D_6-Month-Old Infant
Sec.572.25 General description.
(a) The infant dummy is specified in its entirety by means of 5
drawings (No. SA 1001) and a construction manual, dated July 2, 1974,
which describe in detail the materials and the procedures involved in
the manufacturing of this dummy.
(b) The drawings, specifications, and construction manual referred
to in this regulation that are not set forth in full are hereby
incorporated in this part by reference. These materials are thereby
[[Page 31]]
made part of this regulation. The Director of the Federal Register has
approved the materials incorporated by reference. For materials subject
to change, only the specific version approved by the Director of the
Federal Register and specified in the regulation are incorporated. A
notice of any change will be published in the Federal Register. As a
convenience to the reader, the materials incorporated by reference are
listed in the Finding Aid Table found at the end of this volume of the
Code of Federal Regulations.
(c) The materials incorporated by reference are available for
examination in Docket 78-09, Room 5109, Docket Section, National Highway
Traffic Safety Administration, 400 Seventh Street SW., Washington, DC,
20590. Copies may be obtained from Rowley-Scher Reprographics, Inc.,
1216 K Street NW., Washington, DC 20005 ((202) 628-6667). The materials
are also on file in the reference library of the Office of the Federal
Register, National Archives and Records Administration, Washington, DC.
(d) The structural properties of the dummy are such that the dummy
conforms to this part in every respect both before and after being used
in vehicle tests specified in Standard No. 213 of this chapter (Sec.
571.213).
[50 FR 25424, June 19, 1985]
Subpart E_Hybrid III Test Dummy
Source: 51 FR 26701, July 25, 1986, unless otherwise noted.
Sec.572.30 Incorporated materials.
(a) The drawings and specifications referred to in this regulation
that are not set forth in full are hereby incorporated in this part by
reference. The Director of the Federal Register has approved the
materials incorporated by reference. For materials subject to change,
only the specific version approved by the Director of the Federal
Register and specified in the regulation are incorporated. A notice of
any change will be published in the Federal Register. As a convenience
to the reader, the materials incorporated by reference are listed in the
Finding Aid Table found at the end of this volume of the Code of Federal
Regulations.
(b) The materials incorporated by reference are available for
examination in the general reference section of docket 74-14, Docket
Section, National Highway Traffic Safety Administration, Room 5109, 400
Seventh Street, SW., Washington, DC 20590. Copies may be obtained from
Reprographic Technologies, 9000 Virginia Manor Road, Beltsville, MD
20705, Telephone (301) 210-5600, Facsimile (301) 419-5069, Attn. Mr. Jay
Wall. Drawings and specifications are also on file at the National
Archives and Records Administration (NARA). For information on the
availability of this material at NARA, call 202-741-6030, or go to:
http://www.archives.gov/federal_register/code_of_federal_regulations/
ibr_locations.html.
[51 FR 26701, July 25, 1986, as amended at 61 FR 67955, Dec. 26, 1996]
Sec.572.31 General description.
(a) The Hybrid III 50th percentile size dummy consists of components
and assemblies specified in the Anthropomorphic Test Dummy drawing and
specifications package which consists of the following six items:
(1) The Anthropomorphic Test Dummy Parts List, dated June 26, 1998,
and containing 16 pages, and a Parts List Index, dated June 26, 1998,
containing 8 pages.
(2) A listing of Hybrid III Dummy Transducers-reference document
AGARD-AR-330, ``Anthropomorphic Dummies for Crash and Escape System
Testing'', Chapter 6, Table 6-2, North Atlantic Treaty Organization,
July, 1996.
(3) A General Motors Drawing Package identified by GM Drawing No.
78051-218, revision U, titled ``Hybrid III Anthropomorphic Test Dummy,''
dated August 30, 1998, the following component assemblies, and
subordinate drawings:
------------------------------------------------------------------------
Drawing No. Revision
------------------------------------------------------------------------
78051-61X head assembly-complete, (May 20, 1978).............. (T)
78051-90 neck assembly-complete, dated May 20, 1978........... (A)
[[Page 32]]
78051-89 upper torso assembly-complete, dated May 20, 1978.... (K)
78051-70 lower torso assembly-complete, dated June 30, 1998, (F)
except for drawing No. 78051-55, ``Instrumentation Assembly-
Pelvic Accelerometer,'' dated August 2, 1979.................
86-5001-001 leg assembly-complete (LH), dated March 26, 1996.. (A)
86-5001-002 leg assembly-complete (RH), dated March 26, 1996.. (A)
78051-123 arm assembly-complete (LH), dated May 20, 1996...... (D)
78051-124 arm assembly-complete (RH), dated May 20, 1978...... (D)
78051-59 pelvic assembly-complete, dated June 30, 1998........ (G)
78051-60 pelvic structure-molded, dated June 30, 1998......... (E)
------------------------------------------------------------------------
(4) Disassembly, Inspection, Assembly and Limbs Adjustment
Procedures for the Hybrid III dummy, dated June 1998.
(5) Sign Convention for signal outputs--reference document SAE J1733
Information Report, titled ``Sign Convention for Vehicle Crash
Testing'', dated 1994-12.
(6) Exterior dimensions of the Hybrid III dummy, dated July 15,
1986.
(b) [Reserved]
(c) Adjacent segments are joined in a manner such that throughout
the range of motion and also under crash-impact conditions, there is no
contact between metallic elements except for contacts that exist under
static conditions.
(d) The weights, inertial properties and centers of gravity location
of component assemblies shall conform to those listed in drawing 78051-
338, revision S, titled ``Segment Weights, Inertial Properties, Center
of Gravity Location--Hybrid III,'' dated May 20, 1978 of drawing No.
78051-218.
(e) The structural properties of the dummy are such that the dummy
conforms to this part in every respect both before and after being used
in vehicle test specified in Standard No. 208 of this chapter (Sec.
571.208).
[51 FR 26701, July 25, 1986, as amended at 53 FR 8764, Mar. 17, 1988; 57
FR 47010, Oct. 14, 1992; 61 FR 67955, Dec. 26, 1996; 62 FR 27514, May
20, 1997; 63 FR 5747, Feb. 4, 1998; 63 FR 53851, Oct. 7, 1998]
Sec.572.32 Head.
(a) The head consists of the assembly shown in drawing 78051-61X,
revision C, and conforms to each of the drawings subtended therein.
(b) When the head (Drawing number 78051-61X, titled ``head
assembly--complete,'' dated March 28, 1997 (Revision C) with six axis
neck transducer structural replacement (Drawing number 78051-383X,
Revision P, titled ``Neck Transducer Structural Replacement,'' dated
November 1, 1995) is dropped from a height of 14.8 inches in accordance
with paragraph (c) of this section, the peak resultant accelerations at
the location of the accelerometers mounted in the head in accordance
with Sec.572.36(c) shall not be less than 225g, and not more than
275g. The acceleration/time curve for the test shall be unimodal to the
extent that oscillations occurring after the main acceleration pulse are
less than ten percent (zero to peak) of the main pulse. The lateral
acceleration vector shall not exceed 15g (zero to peak).
(c) Test procedure. (1) Soak the head assembly in a test environment
at any temperature between 66 degrees F to 78 degrees F and at a
relative humidity from 10% to 70% for a period of at least four hours
prior to its application in a test.
(2) Clean the head's skin surface and the surface of the impact
plate with 1,1,1 Trichlorethane or equivalent.
(3) Suspend the head, as shown in Figure 19, so that the lowest
point on the forehead is 0.5 inches below the lowest point on the
dummy's nose when the midsagittal plane is vertical.
[[Page 33]]
[GRAPHIC] [TIFF OMITTED] TC01AU91.162
(4) Drop the head from the specified height by means that ensure
instant release into a rigidly supported flat horizontal steel plate,
which is 2 inches thick and 2 feet square. The plate shall have a clean,
dry surface and any microfinish of not less than 8 microinches (rms) and
not more than 80 microinches (rms).
(5) Allow at least 3 hours between successive tests on the same
head.
[51 FR 26701, July 25, 1986, as amended at 62 FR 27514, May 20, 1997]
[[Page 34]]
Sec.572.33 Neck.
(a) The neck consists of the assembly shown in drawing 78051-90,
revision A and conforms to each of the drawings subtended therein.
(b) When the head and neck assembly (consisting of the parts 78051-
61X, revision C; -90, revision A; -84; -94; -98; -104, revision F; -303,
revision E; -305; -306; -307, revision X) which has a six axis neck
transducer (Drawing number C-1709, Revision D, titled ``Neck
transducer,'' dated February 1, 1993.) installed in conformance with
Sec.572.36(d), is tested in accordance with paragraph (c) of this
section, it shall have the following characteristics:
(1) Flexion. (i) Plane D, referenced in Figure 20, shall rotate
between 64 degrees and 78 degrees, which shall occur between 57
milliseconds (ms) and 64 ms from time zero. In first rebound, the
rotation of Plane D shall cross 0 degrees between 113 ms and 128 ms.
(ii) The moment measured by the six axis neck transducer (drawing C-
1709, revision D) about the occipital condyles, referenced in Figure 20,
shall be calculated by the following formula: Moment (lbs-ft) = My-0.058
x Fx, where My is the moment measured in lbs-ft by the ``Y'' axis moment
sensor of the six axis neck transducer and Fx is the force measured in
lbs by the ``X'' axis force sensor (Channel Class 600) of the six axis
neck transducer. The moment shall have a maximum value between 65 lbs-ft
and 80 lbs-ft occurring between 47ms and 58 ms, and the positive moment
shall decay for the first time to 0 lb-ft between 97 ms and 107 ms.
(2) Extension. (i) Plane D, referenced in Figure 21, shall rotate
between 81 degrees and 106 degrees, which shall occur between 72 ms and
82 ms from time zero. In first rebound, rotation of Plane D shall cross
0 degrees between 147 ms and 174 ms.
(ii) The moment measured by the six axis neck transducer (drawing C-
1709, revision D) about the occipital condyles, referenced in Figure 21,
shall be calculated by the following formula: Moment (lbs-ft) = My-0.058
x Fx, where My is the moment measured in lbs-ft by the ``Y'' axis moment
sensor of the six axis neck transducer and Fx is the force measured in
lbs by the ``X'' axis force sensor (Channel Class 600) of the six axis
neck transducer. The moment shall have a maximum value between--39 lbs-
ft and -59 lbs-ft, occurring between 65 ms and 79 ms, and the negative
moment shall decay for the first time to 0 lb-ft between 120 ms and 148
ms.
[[Page 35]]
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[[Page 36]]
[GRAPHIC] [TIFF OMITTED] TR20MY97.001
(c) Test procedure. (1) Soak the test material in a test environment
at any temperature between 69 degrees F to 72 degrees F and at a
relative humidity from 10% to 70% for a period of at least four hours
prior to its application in a test.
(2) Torque the jamnut (78051-64) on the neck cable (78051-301,
revision E) to 1.0 lbs-ft .2 lbs-ft.
(3) Mount the head-neck assembly, defined in paragraph (b) of this
section, on a rigid pendulum as shown in Figure 22 so that the head's
midsagittal plane is vertical and coincides with the plane of motion of
the pendulum's longitudinal axis.
[[Page 37]]
[GRAPHIC] [TIFF OMITTED] TR02JN11.011
(4) Release the pendulum and allow it to fall freely from a height
such that the tangential velocity at the pendulum accelerometer
centerline at the instance of contact with the honeycomb is 23.0 ft/sec
0.4 ft/sec. for flexion testing and 19.9 ft/sec.
0.4 ft/sec. for extension testing. The pendulum
deceleration vs. time pulse for flexion testing shall conform to the
characteristics shown in Table A and the decaying deceleration-time
curve shall first cross 5g between 34 ms and 42 ms. The
pendulum deceleration vs. time pulse for extension testing shall conform
to the characteristics shown in Table B and the decaying deceleration-
time curve shall cross 5g between 38 ms and 46 ms.
[[Page 38]]
Table A--Flexion Pendulum Deceleration vs. Time Pulse
------------------------------------------------------------------------
Flexion
Time (ms) deceleration
level (g)
------------------------------------------------------------------------
10........................................................ 22.50-27.50
20........................................................ 17.60-22.60
30........................................................ 12.50-18.50
Any other time above 30 ms................................ 29 maximum.
------------------------------------------------------------------------
Table B--Extension Pendulum Deceleration vs. Time Pulse
------------------------------------------------------------------------
Extension
Time (ms) deceleration
level (g)
------------------------------------------------------------------------
10........................................................ 17.20-21.20
20........................................................ 14.00-19.00
30........................................................ 11.00-16.00
Any other time above 30 ms................................ 22 maximum.
------------------------------------------------------------------------
(5) Allow the neck to flex without impact of the head or neck with
any object during the test.
[51 FR 26701, July 25, 1986, as amended at 53 FR 8765, Mar. 17, 1988; 62
FR 27514, May 20, 1997; 76 FR 31864, June 2, 2011]
Sec.572.34 Thorax.
(a) The thorax consists of the upper torso assembly in drawing
78051-89, revision K and shall conform to each of the drawings subtended
therein.
(b) When impacted by a test probe conforming to Sec.572.36(a) at
22 fps 0.40 fps in accordance with paragraph (c)
of this section, the thorax of a complete dummy assembly (78051-218,
revision U, without shoes, shall resist with a force of 1242.5 pounds
82.5 pounds measured by the test probe and shall
have a sternum displacement measured relative to spine of 2.68 inches
0.18 inches. The internal hysteresis in each
impact shall be more than 69% but less than 85%. The force measured is
the product of pendulum mass and deceleration.
(c) Test procedure. (1) Soak the test dummy in an environment with a
relative humidity from 10% to 70% until the temperature of the ribs of
the test dummy have stabilized at a temperature between 69 degrees F and
72 degrees F.
(2) Seat the dummy without back and arm supports on a surface as
shown in Figure 23, and set the angle of the pelvic bone at 13 degrees
plus or minus 2 degrees, using the procedure described in S11.4.3.2 of
Standard No. 208 (Sec.571.208 of this chapter).
[[Page 39]]
[GRAPHIC] [TIFF OMITTED] TC01AU91.166
(3) Place the longitudinal centerline of the test probe so that it
is .5 .04 in. below the horizontal centerline of
the No. 3 Rib (reference drawing number 79051-64, revision A-M) as shown
in Figure 23.
[[Page 40]]
(4) Align the test probe specified in Sec.572.36(a) so that at
impact its longitudinal centerline coincides within .5 degree of a
horizontal line in the dummy's midsagittal plane.
(5) Impact the thorax with the test probe so that the longitudinal
centerline of the test probe falls within 2 degrees of a horizontal line
in the dummy midsagittal plane at the moment of impact.
(6) Guide the probe during impact so that it moves with no
significant lateral, vertical, or rotational movement.
(7) Measure the horizontal deflection of the sternum relative to the
thoracic spine along the line established by the longitudinal centerline
of the probe at the moment of impact, using a potentiometer (ref.
drawing 78051-317, revision A) mounted inside the sternum as shown in
drawing 78051-89, revision I.
(8) Measure hysteresis by determining the ratio of the area between
the loading and unloading portions of the force deflection curve to the
area under the loading portion of the curve.
[51 FR 26701, July 25, 1986, as amended at 53 FR 8765, Mar. 17, 1988; 62
FR 27518, May 20, 1997; 63 FR 53851, Oct. 7, 1998]
Sec.572.35 Limbs.
(a) The limbs consist of the following assemblies: leg assemblies
86-5001-001, revision A and -002, revision A, and arm assemblies 78051-
123, revision D and -124, revision D, and shall conform to the drawings
subtended therein.
(b) Femur impact response. (1) When each knee of the leg assemblies
is impacted in accordance with paragraph (b)(2) of this section, at 6.9
ft/sec 0.10 ft/sec by the pendulum defined in
Sec.572.36(b), the peak knee impact force, which is a product of
pendulum mass and acceleration, shall have a minimum value of not less
than 1060 pounds and a maximum value of not more than 1300 pounds.
(2) Test procedure. (i) The test material consists of leg assemblies
(86-5001-001, revision A) left and (-002, revision A) right with upper
leg assemblies (78051-46) left and (78051-47) right removed. The load
cell simulator (78051-319, revision A) is used to secure the knee cap
assemblies (79051-16, revision B) as shown in Figure 24.
(ii) Soak the test material in a test environment at any temperature
between 66 degrees F to 78 degrees F and at a relative humidity from 10%
to 70% for a period of at least four hours prior to its application in a
test.
(iii) Mount the test material with the leg assembly secured through
the load cell simulator to a rigid surface as shown in Figure 24. No
contact is permitted between the foot and any other exterior surfaces.
(iv) Place the longitudinal centerline of the test probe so that at
contact with the knee it is collinear within 2 degrees with the
longitudinal centerline of the femur load cell simulator.
(v) Guide the pendulum so that there is no significant lateral,
vertical or rotational movement at time zero.
(vi) Impact the knee with the test probe so that the longitudinal
centerline of the test probe at the instant of impact falls within .5
degrees of a horizontal line parallel to the femur load cell simulator
at time zero.
(vii) Time zero is defined as the time of contact between the test
probe and the knee.
(c) Hip joint-femur flexion. (1) When each femur is rotated in the
flexion direction in accordance with paragraph (c)(2) of this section,
the femur torque at 30 deg. rotation from its initial horizontal
orientation will not be more than 70 ft-lbf, and at 150 ft-lbf of torque
will not be less than 40 deg. or more than 50 deg.
(2) Test procedure. (i) The test material consists of the assembled
dummy, part No. 78051-218 (revision S) except that (1) leg assemblies
(86-5001-001 and 002) are separated from the dummy by removing the 3/8-
16 Socket Head Cap Screw (SHCS) (78051-99) but retaining the structural
assembly of the upper legs (78051-43 and -44), (2) the abdominal insert
(78051-52) is removed and (3) the instrument cover plate (78051-13) in
the pelvic bone is replaced by a rigid pelvic bone stabilizer insert
(Figure 25a) and firmly secured.
(ii) Seat the dummy on a rigid seat fixture (Figure 25) and firmly
secure it to the seat back by bolting the stabilizer insert and the
rigid support device (Figure 25b) to the seat back of the test fixture
(Figures 26 and 27) while
[[Page 41]]
maintaining the pelvis (78051-58) ``B'' plane horizontal.
(iii) Insert a lever arm into the femur shaft opening of the upper
leg structure assembly (78051-43/44) and firmly secure it using the 3/8-
16 socket head cap screws.
(iv) Lift the lever arm parallel to the midsagittal plane at a
rotation rate of 5 to 10 deg. per second while maintaining the \1/2\ in.
shoulder bolt longitudinal centerline horizontal throughout the range of
motion until the 150 ft-lbf torque level is reached. Record the torque
and angle of rotation of the femur.
(v) Operating environment and temperature are the same as specified
in paragraph (b)(2)(ii) of this section.
[GRAPHIC] [TIFF OMITTED] TC01AU91.167
[[Page 42]]
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[GRAPHIC] [TIFF OMITTED] TR26DE96.005
[GRAPHIC] [TIFF OMITTED] TR26DE96.006
[[Page 44]]
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[51 FR 26701, July 25, 1986, as amended at 53 FR 8765, Mar. 17, 1988; 61
FR 67955, Dec. 26, 1997; 63 FR 5748, Feb. 4, 1998]
Sec.572.36 Test conditions and instrumentation.
(a) The test probe used for thoracic impact tests is a 6 inch
diameter cylinder that weighs 51.5 pounds including instrumentation. Its
impacting end has a flat right angle face that is rigid and has an edge
radius of 0.5 inches. The test probe has an accelerometer mounted on the
end opposite from impact with its sensitive axis colinear to the
longitudinal centerline of the cylinder.
(b) Test probe used for the knee impact tests is a 3 inch diameter
cylinder that weights 11 pounds including instrumentation. Its impacting
end has a flat right angle face that is rigid and has an edge radius of
0.02 inches. The test probe has an accelerometer mounted on the end
opposite from impact with its sensitive axis colinear to
[[Page 46]]
the longitudinal centerline of the cylinder.
(c) Head accelerometers shall have dimensions and response
characteristics specified in drawing 78051-136, revision A, or its
equivalent, and the location of their seismic mass as mounted in the
skull are shown in drawing C-1709, revision D.
(d) The six axis neck transducer shall have the dimensions, response
characteristics, and sensitive axis locations specified in drawing C-
1709, revision D and be mounted for testing as shown in Figures 20 and
21 of Sec.572.33, and in the assembly drawing 78051-218, revision T.
(e) The chest accelerometers shall have the dimensions, response
characteristics, and sensitive mass locations specified in drawing
78051-136, revision A or its equivalent and be mounted as shown with
adaptor assembly 78051-116, revision D for assembly into 78051-218,
revision T.
(f) The chest deflection transducer shall have the dimensions and
response characteristics specified in drawing 78051-342, revision A or
its equivalent and be mounted in the chest deflection transducer
assembly 78051-317, revision A for assembly into 78051-218, revision T.
(g) The thorax and knee impactor accelerometers shall have the
dimensions and characteristics of Endevco Model 7231c or equivalent.
Each accelerometer shall be mounted with its sensitive axis colinear
with the pendulum's longitudinal centerline.
(h) The femur load cell shall have the dimensions, response
characteristics, and sensitive axis locations specified in drawing
78051-265 or its equivalent and be mounted in assemblies 78051-46 and -
47 for assembly into 78051-218, revision T.
(i) The outputs of acceleration and force-sensing devices installed
in the dummy and in the test apparatus specified by this part are
recorded in individual data channels that conform to requirements of
Society of Automotive Engineers (SAE) Recommended Practice J211 Mar95,
Instrumentation for Impact Tests, Parts 1 and 2. SAE J211 Mar95 sets
forth the following channel classes:
(1) Head acceleration--Class 1000
(2) Neck forces--Class 1000
(3) Neck moments--Class 600
(4) Neck pendulum acceleration--Class 60
(5) Thorax and thorax pendulum acceleration--Class 180
(6) Thorax deflection--Class 180
(7) Knee pendulum acceleration--Class 600
(8) Femur force--Class 600
(j) Coordinate signs for instrumentation polarity conform to the
sign convention shown in the document incorporated by Sec.
572.31(a)(5).
(k) The mountings for sensing devices shall have no resonance
frequency within range of 3 times the frequency range of the applicable
channel class.
(l) Limb joints are set at lg, barely restraining the weight of the
limb when it is extended horizontally. The force required to move a limb
segment shall not exceed 2g throughout the range of limb motion.
(m) Performance tests of the same component, segment, assembly, or
fully assembled dummy are separated in time by period of not less than
30 minutes unless otherwise noted.
(n) Surfaces of dummy components are not painted except as specified
in this part or in drawings subtended by this part.
[51 FR 26701, July 25, 1986, as amended at 53 FR 8765, Mar. 17, 1988; 62
FR 27518, May 20, 1997; 63 FR 45965, Aug. 28, 1998]
Subpart F_Side Impact Dummy 50th Percentile Male
Source: 55 FR 45766, Oct. 30, 1990, unless otherwise noted.
Sec.572.40 Incorporated materials.
(a) The drawings, specifications, manual, and computer program
referred to in this regulation that are not set forth in full are hereby
incorporated in this part by reference. These materials are thereby made
part of this regulation. The Director of the Federal Register has
approved the materials incorporated by reference. For materials subject
to change, only the specific version approved by the Director of the
Federal Register and specified in the regulation are incorporated. A
notice of any change will be published in the Federal Register. As a
convenience
[[Page 47]]
to the reader, the materials incorporated by reference are listed in the
Finding Aids Table found at the end of this volume of the Code of
Federal Regulations.
(b) The materials incorporated in this part by reference are
available for examination in the general reference section of Docket 79-
04, Docket Section, National Highway Traffic Safety Administration, room
5109, 400 Seventh St., S.W., Washington, D.C., 20590, telephone (202)
366-4949. Copies may be obtained from Reprographic Technologies, 9000
Virginia Manor Rd., Suite 210, Beltsville, MD, 20705, Telephone (301)
419-5070, Fax (301) 419-5069.
[55 FR 45766, Oct. 30, 1990, as amended at 63 FR 16140, Apr. 2, 1998]
Sec.572.41 General description.
(a) The dummy consists of component parts and component assemblies
(SA-SID-M001, revision C, dated September 12, 1996, and SA-SID-M001A,
revision B, dated September 12, 1996), which are described in
approximately 250 drawings and specifications that are set forth in
Sec.572.5(a) of this chapter with the following changes and additions
which are described in approximately 85 drawings and specifications
(incorporated by reference; see Sec.572.40):
(1) The head assembly consists of the assembly specified in subpart
B (Sec.572.6(a)) and conforms to each of the drawings subtended under
drawing SA 150 M010 and drawings specified in SA-SID-M010, dated August
13, 1987.
(2) The neck assembly consists of the assembly specified in subpart
B (Sec.572.7(a)) and conforms to each of the drawings subtended under
drawing SA 150 M020 and drawings shown in SA-SID-M010, dated August 13,
1987.
(3) The thorax assembly consists of the assembly shown as number
SID-053 and conforms to each applicable drawing subtended by number SA-
SID-M030 revision A, dated May 18, 1994.
(4) The lumbar spine consists of the assembly specified in subpart B
(Sec.572.9(a)) and conforms to drawing SA 150 M050 and drawings
subtended by SA-SID-M050 revision B, dated September 12, 1996, including
the addition of Lumbar Spacers-Lower SID-SM-001 and Lumbar Spacers-Upper
SID-SM-002 (both dated May 12, 1994), and Washer 78051-243.
(5) The abdomen and pelvis consist of the assembly specified in
subpart B of this part (Sec.572.9) and conform to the drawings
subtended by SA 150 M060, the drawings subtended by SA-SID-M060 revision
A, dated May 18, 1994, and the drawings subtended by SA-SID-087 sheet 1
revision H, dated May 18, 1994, and SA-SID-087 sheet 2 revision H.
(6) The lower limbs consist of the assemblies specified in subpart B
(Sec.572.10) shown as SA 150 M080 and SA 150 M081 in Figure 1 and SA-
SID-M080 and SA-SID-M081, both dated August 13, 1987, and conform to the
drawings subtended by those numbers.
(b) The structural properties of the dummy are such that the dummy
conforms to the requirements of this subpart in every respect both
before and after being used in vehicle tests specified in Standard No
214 Sec.571.214 of this chapter.
(c) Disassembly, inspection, and assembly procedures; external
dimensions and weight; and a dummy drawing list are set forth in the
Side Impact Dummy (SID) User's Manual, dated May 1994 except for pages
7, 20 and 23, and appendix A (consisting of replacement pages 7, 20 and
23) dated January 20, 1998 (incorporated by reference; see Sec.
572.40).
[55 FR 45766, Oct. 30, 1990, as amended at 59 FR 52091, Oct. 14, 1994;
63 FR 16140, Apr. 2, 1998]
Sec.572.42 Thorax.
(a) When the thorax of a completely assembled dummy (SA-SID-M001A
revision A, dated May 18, 1994, incorporated by reference; see Sec.
572.40), appropriately assembled for right or left side impact, is
impacted by a test probe conforming to Sec.572.44(a) at 14 fps in
accordance with paragraph (b) of this section, the peak accelerations at
the location of the accelerometers mounted on the thorax in accordance
with Sec.572.44(b) shall be:
(1) For the accelerometer at the top of the Rib Bar on the struck
side (LUR or RUR) not less than 37 g's and not more than 46 g's.
(2) For the accelerometer at the bottom of the Rib Bar on the struck
side
[[Page 48]]
(LLR or RLR) not less than 37 g's and not more than 46 g's.
(3) For the lower thoracic spine (T12) not less than 15 g's and not
more than 22 g's.
(b) Test Procedure. (1) Adjust the dummy legs as specified in Sec.
572.44(f). Seat the dummy on a seating surface as specified in Sec.
572.44(h) with the limbs extended horizontally forward.
(2) Place the longitudinal centerline of the test probe at the
lateral side of the chest at the intersection of the centerlines of the
third rib and the Rib Bar on the desired side of impact. This is the
left side if the dummy is to be used on the driver's side of the vehicle
and the right side if the dummy is to be used on the passenger side of
the vehicle. The probe's centerline is perpendicular to thorax's
midsagittal plane.
(3) Align the test probe so that its longitudinal centerline
coincides with the line formed by the intersection of the transverse and
frontal planes perpendicular to the chest's midsagittal plane passing
through the designated impact point.
(4) Position the dummy as specified in Sec.572.44(h), so that the
thorax's midsagittal plane and tangential plane to the Hinge Mounting
Block (Drawing SID-034) are vertical.
(5) Impact the thorax with the test probe so that at the moment of
impact at the designated impact point, the probe's longitudinal
centerline falls within 2 degrees of a horizontal line perpendicular to
the dummy's midsagittal plane and passing through the designated impact
point.
(6) Guide the probe during impact so that it moves with no
significant lateral, vertical or rotational movement.
(7) Allow a time period of at least 20 minutes between successive
tests of the chest.
[59 FR 52091, Oct. 14, 1994, as amended at 59 FR 52091, Oct. 14, 1994]
Sec.572.43 Lumbar spine and pelvis.
(a) When the pelvis of a fully assembled dummy (SA-SID-M001A
revision B, dated September 12, 1996, (incorporated by reference; see
Sec.572.40) is impacted laterally by a test probe conforming to Sec.
572.44(a) at 14 fps in accordance with paragraph (b) of this section,
the peak acceleration at the location of the accelerometer mounted in
the pelvis cavity in accordance with Sec.572.44(c) shall be not less
than 40g and not more than 60g. The acceleration-time curve for the test
shall be unimodal and shall lie at or above the + 20g level for an
interval not less than 3 milliseconds and not more than 7 milliseconds.
(b) Test Procedure. (1) Adjust the dummy legs as specified in Sec.
572.44(f). Seat the dummy on a seating surface as specified in Sec.
572.44(h) with the limbs extended horizontally forward.
(2) Place the longitudinal centerline of the test probe at the
lateral side of the pelvis at a point 3.9 inches vertical from the
seating surface and 4.8 inches ventral to a transverse vertical plane
which is tangent to the back of the dummy's buttocks.
(3) Align the test probe so that at impact its longitudinal
centerline coincides with the line formed by intersection of the
horizontal and vertical planes perpendicular to the midsagittal plane
passing through the designated impact point.
(4) Adjust the dummy so that its midsagittal plane is vertical and
the rear surfaces of the thorax and buttocks are tangent to a transverse
vertical plane.
(5) Impact the pelvis with the test probe so that at the moment of
impact the probe's longitudinal centerline falls within 2 degrees of the
line specified in paragraph (b)(3) of this section.
(6) Guide the test probe during impact so that it moves with no
significant lateral, vertical or rotational movement.
(7) Allow a time period of at least 2 hours between successive tests
of the pelvis.
[55 FR 45766, Oct. 30, 1990, as amended at 59 FR 52091, Oct. 14, 1994;
63 FR 16140, Apr. 2, 1998]
Sec.572.44 Instrumentation and test conditions.
(a) The test probe used for lateral thoracic and pelvis impact tests
is a 6 inch diameter cylinder that weighs 51.5 pounds including
instrumentation. Its impacting end has a flat right angle face that is
rigid and has an edge radius of 0.5 inches.
(b) Three accelerometers are mounted in the thorax for measurement
of
[[Page 49]]
lateral accelerations with each accelerometer's sensitive axis aligned
to be closely perpendicular to the thorax's midsagittal plane. The
accelerometers are mounted in the following locations:
(1) One accelerometer is mounted on the thorax to lumbar adaptor
(SID-005 revision F, dated May 18, 1994, incorporated by reference; see
Sec.572.40) with seismic mass center located 0.5 inches toward the
impact side, 0.1 inches upward and 1.86 inches rearward from the
reference point shown in Figure 30 in appendix A to subpart F of part
572. Maximum permissible variation of the seismic location must not
exceed 0.2 inches spherical radius.
(2) Two accelerometers are mounted, one on the top and the other at
the bottom part of the Rib Bar (SID-024) on the struck side. Their
seismic mass centers are at any distance up to .4 inches from a point on
the Rib Bar surface located on its longitudinal center line .75 inches
from the top for the top accelerometer and .75 inches from the bottom,
for the bottom accelerometer.
(c) One accelerometer is mounted in the pelvis for measurement of
the lateral acceleration with its sensitive axis perpendicular to the
pelvic midsagittal plane. The accelerometer is mounted on the rear wall
of the instrumentation cavity of the pelvis (SID-087 revision H, dated
May 18, 1994, incorporated by reference; see Sec.572.40). The
accelerometer's seismic mass with respect to the mounting bolt center
line is 0.9 inches up, 0.7 inches to the left for left side impact and
0.03 inches to the left for right side impact, and 0.5 inches rearward
from the rear wall mounting surface as shown in Figure 31 in appendix A
to subpart F of part 572. Maximum permissible variation of the seismic
location must not exceed 0.2 inches spherical radius.
(d) Instrumentation and sensors used must conform to the SAE J-211
(1980) recommended practice requirements (incorporated by reference; see
Sec.572.40). The outputs of the accelerometers installed in the dummy
are then processed with the software for the Finite Impulse Response
(FIR) filter (FIR 100 software). The FORTRAN program for this FIR 100
software (FIR100 Filter Program, Version 1.0, July 16, 1990) is
incorporated by reference in this part (see Sec.572.40). The data are
processed in the following manner:
(1) Analog data recorded in accordance with SAE J-211 (1980)
recommended practice channel class 1000 specification.
(2) Filter the data with a 300 Hz, SAE Class 180 filter;
(3) Subsample the data to a 1600 Hz sampling rate;
(4) Remove the bias from the subsampled data, and
(5) Filter the data with the FIR100 Filter Program (Version 1.0,
July 16, 1990), which has the following characteristics--
(i) Passband frequency, 100 Hz.
(ii) Stopband frequency, 189 Hz.
(iii) Stopband gain, -50 db.
(iv) Passband ripple, 0.0225 db.
(e) The mountings for the spine, rib and pelvis accelerometers shall
have no resonance frequency within a range of 3 times the frequency
range of the applicable channel class.
(f) Limb joints of the test dummy are set at the force between 1-2
g's, which just supports the limbs' weight when the limbs are extended
horizontally forward. The force required to move a limb segment does not
exceed 2 g's throughout the range of limb motion.
(g) Performance tests are conducted at any temperature from 66
[deg]F to 78 [deg]F and at any relative humidity from 10 percent to 70
percent after exposure of the dummy to these conditions for a period of
not less than 4 hours.
(h) For the performance of tests specified in Sec. Sec.572.42 and
572.43, the dummy is positioned as follows:
(1) The dummy is placed on a flat, rigid, clean, dry, horizontal
smooth aluminum surface whose length and width dimensions are not less
than 16 inches, so that the dummy's midsagittal plane is vertical and
centered on the test surface. The dummy's torso is positioned to meet
the requirements of Sec.572.42 and Sec.572.43. The seating surface
is without the back support and the test dummy is positioned so that the
dummy's midsagittal plane is vertical and centered on the seat surface.
(2) The legs are positioned so that their centerlines are in planes
parallel to the midsagittal plane.
[[Page 50]]
(3) Performance pre-tests of the assembled dummy are separated in
time by a period of not less than 20 minutes unless otherwise specified.
(4) Surfaces of the dummy components are not painted except as
specified in this part or in drawings subtended by this part.
[55 FR 45766, Oct. 30, 1990, as amended at 56 FR 47011, Sept. 17, 1991;
59 FR 52091, Oct. 14, 1994]
[[Page 51]]
Sec. Appendix A to Subpart F of Part 572--Figures
[GRAPHIC] [TIFF OMITTED] TC01AU91.168
[[Page 52]]
[GRAPHIC] [TIFF OMITTED] TR14OC94.001
[59 FR 52092, Oct. 14, 1994]
[[Page 53]]
Subparts G-H [Reserved]
Subpart I_6-Year-Old Child
Source: 56 FR 57836, Nov. 14, 1991, unless otherwise noted.
Sec.572.70 Incorporation by reference.
(a) The drawings and specifications referred to in Sec. Sec.
572.71(a) and 572.71(b) are hereby incorporated in subpart I by
reference. These materials are thereby made part of this regulation. The
Director of the Federal Register approved the materials incorporated by
reference in accordance with 5 U.S.C. 552(a) and 1 CFR part 51. Copies
of the materials may be inspected at NHTSA's Docket Section, 400 Seventh
Street, SW., room 5109, Washington, DC, or at the National Archives and
Records Administration (NARA). For information on the availability of
this material at NARA, call 202-741-6030, or go to: http://
www.archives.gov/federal_register/code_of_federal_regulations/
ibr_locations.html.
(b) The incorporated material is available as follows:
(1) Drawing number SA 106 C001 sheets 1 through 18, and the drawings
listed in the parts lists described on sheets 8 through 17, are
available from Reprographic Technologies, 9000 Virginia Manor Rd.,
Beltsville, MD 20705, Telephone (301) 210-5600, Fax (301) 210-5607.
(2) A User's Manual entitled, ``Six-Year-Old Size Child Test Dummy
SA106C,'' October 28, 1991, is available from Reprographic Technologies
at the address in paragraph (b)(1) of this section.
(3) SAE Recommended Practice J211, Instrumentation for Impact Test,
June 1988, is available from the Society of Automotive Engineers, Inc.,
400 Commonwealth Drive, Warrendale, PA 15096-0001.
[56 FR 57836, Nov. 14, 1991, as amended at 62 FR 44226, Aug. 20, 1997]
Sec.572.71 General description.
(a) The representative 6-year-old dummy consists of a drawings and
specifications package that contains the following materials:
(1) Technical drawings, specifications, and the parts list package
shown in SA 106C 001, sheets 1 through 18, rereleased July 11, 1997;
(2) A user's manual entitled, ``Six-Year-Old Size Child Test Dummy
SA106C,'' October 28, 1991.
(b) The dummy is made up of the component assemblies set out in
Table A:
Table A
----------------------------------------------------------------------------------------------------------------
Assembly drawing No. Drawing title Listed on drawing No. Revision
----------------------------------------------------------------------------------------------------------------
SA 106C 010........................ Head Assembly......... SA 106C 001, sheet 8.. A
SA 106C 020........................ Neck Assembly......... SA 106C 001, sheet 9.. A
SA 106C 030........................ Thorax Assembly....... SA 106C 001, sheet 10. C
SA 106C 030........................ Thorax Assembly....... SA 106C 001, sheet 11. D
SA 106C 041........................ Arm Assembly (right).. SA 106C 001, sheet 14. A
SA 106C 042........................ Arm Assembly (left)... SA 106C 001, sheet 15. A
SA 106C 050........................ Lumbar Spine Assembly. SA 106C 001, sheet 12. A
SA 106C 060........................ Pelvis Assembly....... SA 106C 001, sheet 13. A
SA 106C 071........................ Leg Assembly (right).. SA 106C 001, sheet 16. A
SA 106C 072........................ Leg Assembly (left)... SA 106C 001, sheet 17. A
----------------------------------------------------------------------------------------------------------------
(c) Adjacent segments are joined in a manner such that except for
contacts existing under static conditions, there is no contact between
metallic elements throughout the range of motion or under simulated
crash-impact conditions.
(d) The structural properties of the dummy are such that the dummy
conforms to this part in every respect both before and after its use in
any test similar to those specified in Standard 213, Child Restraint
Systems.
[56 FR 57836, Nov. 14, 1991, as amended at 62 FR 44226, Aug. 20, 1997]
Sec.572.72 Head assembly and test procedure.
(a) Head assembly. The head consists of the assembly designated as
SA 106
[[Page 54]]
010 on drawing No. SA 106C 001, sheet 2, and conforms to each drawing
listed on SA 106C 001, sheet 8.
(b) Head assembly impact response requirements. When the head is
impacted by a test probe conforming to Sec.572.77(a)(1) at 7 feet per
second (fps) according to the test procedure in paragraph (c) of this
section, then the resultant head acceleration measured at the location
of the accelerometer installed in the headform according to Sec.
577.77(b) is not less than 130g and not more than 160g.
(1) The recorded acceleration-time curve for this test is unimodal
at or above the 50g level, and lies at or above that level for an
interval not less than 1.0 and not more than 2.0 milliseconds.
(2) The lateral acceleration vector does not exceed 5g.
(c) Head test procedure. The test procedure for the head is as
follows:
(1) Seat and orient the dummy on a seating surface having a back
support as specified in Sec.572.78(c), and adjust the joints of the
limbs at any setting (between 1g and 2g) which just supports the limbs'
weight when the limbs are extended horizontally and forward.
(2) Adjust the test probe so that its longitudinal center line is--
(i) At the forehead at the point of orthogonal intersection of the
head midsagittal plane and the transverse plane which is perpendicular
to the Z axis of the head as shown in Figure 40;
(ii) Located 2.7 0.1 inches below the top of
the head measured along the Z axis, and;
(iii) Coincides within 2 degrees with the line made by the
intersection of the horizontal and midsagittal planes passing through
this point.
(3) Impact the head with the test probe so that at the moment of
contact the probe's longitudinal center line falls within 2 degrees of a
horizontal line in the dummy's midsagittal plane.
(4) Guide the test probe during impact so that there is no
significant lateral, vertical, or rotational movement.
(5) Allow at least 60 minutes between successive head tests.
Sec.572.73 Neck assembly and test procedure.
(a) Neck assembly. The neck consists of the assembly designated as
SA 106C 020 on drawing SA 106C 001, sheet 2, and conforms to each
drawing listed on SA 106C 001, sheet 9.
(b) Neck assembly impact response requirements. When the head-neck
assembly (SA 106C 010 and SA 106C 020) is tested according to the test
procedure in Sec.572.73(c), the head:
(1) Shall rotate, while translating in the direction of the pendulum
preimpact flight, in reference to the pendulum's longitudinal center
line a total of 78 degrees 6 degrees about the
head's center of gravity; and
(2) Shall rotate to the extent specified in Table B at each
indicated point in time, measured from time of impact, with the chordal
displacement measured at the head's center of gravity.
(i) Chordal displacement at time ``T'' is defined as the straight
line distance between the position relative to the pendulum arm of the
head's center of gravity at time ``zero;'' and the position relative to
the pendulum arm of the head's center of gravity at time T as
illustrated by Figure 3 in Sec.572.11.
(ii) The peak resultant acceleration recorded at the location of the
accelerometers mounted in the headform according to Sec.572.77(b)
shall not exceed 30g.
Table B
------------------------------------------------------------------------
Chordal
Time (ms) (2 (inches) 0.8
------------------------------------------------------------------------
0.............................. 0 0
30............................. 26 2.7
60............................. 44 4.3
Maximum........................ 68 5.8
60............................. 101 4.4
30............................. 121 2.4
0.............................. 140 0
------------------------------------------------------------------------
(3) The pendulum shall not reverse direction until the head's center
of gravity returns to the original ``zero'' time position relative to
the pendulum arm.
(c) Neck test procedure. The test procedure for the neck is as
follows:
(1) Mount the head and neck assembly on a rigid pendulum as
specified in Sec.572.21, Figure 15, so that the head's midsagittal
plane is vertical and coincides with the plane of motion of the
pendulum's longitudinal center line. Attach the neck directly to the
pendulum as shown in Sec.572.21, Figure 15.
[[Page 55]]
(2) Release the pendulum and allow it to fall freely from a height
such that the velocity at impact is 17.00 1.0 fps,
measured at the center of the accelerometer specified in Sec.572.21,
Figure 15.
(3) Decelerate the pendulum to a stop with an acceleration-time
pulse described as follows:
(i) Establish 5g and 20g levels on the a-t curve.
(ii) Establish t1 at the point where the rising a-t curve
first crosses the 5g level; t2 at the point where the rising
a-t curve first crosses the 20g level; t3 at the point where
the decaying a-t curve last crosses the 20g level; and t4 at
the point where the decaying a-t curve first crosses the 5g level.
(iii) t2-t1 shall not be more than 3
milliseconds.
(iv) t3-t2 shall not be more than 22
milliseconds, and not less than 19 milliseconds.
(v) t4-t3 shall not be more than 6
milliseconds.
(vi) The average deceleration between t2 and
t3 shall not be more than 26g, or less than 22g.
(4) Allow the neck to flex without the head or neck contacting any
object other than the pendulum arm.
(5) Allow at least 60 minutes between successive tests.
[56 FR 57836, Nov. 14, 1991, as amended at 57 FR 4086, Feb. 3, 1992]
Sec.572.74 Thorax assembly and test procedure.
(a) Thorax assembly. The thorax consists of the part of the torso
assembly designated as SA 106C 030 on drawing SA 106C 001, sheet 2,
Revision A, and conforms to each applicable drawing on SA 106C 001 sheet
10, Revision C (including Drawing number 6C-1610-1 thru -4, Revision A,
titled ``Screw Button Head Socket'', dated September 30, 1996, and
Drawing number 6C-1021, Revision B, titled ``Ballast, 6 Yr. Thoraxc (for
7267A)'', dated September 24, 1996), and sheet 11, Revision D (including
Drawing number SA 6C-909, Revision A, titled ``Cover-chest
Accelerometer'', dated September 21, 1996, and Drawing number 6C-1000-1,
Revision C, titled ``Sternum Thoracic Weld Ass'y.'', dated September 24,
1996).
(b) Thorax assembly requirements. When the thorax is impacted by a
test probe conforming to Sec.572.77(a) to 20 0.3
fps according to the test procedure in paragraph (c) of this section,
the peak resultant accelerations at the accelerometers mounted in the
chest cavity according to Sec.572.77(c) shall not be less than 43g and
not more than 53g.
(1) The recorded acceleration-time curve for this test shall be
unimodal at or above the 30g level, and shall lie at or above that level
for an interval not less than 4 milliseconds and not more than 6
milliseconds.
(2) The lateral accelerations shall not exceed 5g.
(c) Thorax test procedure. The test procedure for the thorax is as
follows:
(1) Seat and orient the dummy on a seating surface without back
support as specified in Sec.572.78(c), and adjust the joints of the
limbs at any setting (between 1g and 2g) which just supports the limbs'
weight when the limbs are extended horizontally and forward, parallel to
the midsagittal plane.
(2) Establish the impact point at the chest midsagittal plane so
that the impact point is 2.25 inches below the longitudinal center of
the clavicle retainer screw, and adjust the dummy so that the plane that
bisects the No. 3 rib into upper and lower halves is horizontal 1 degree.
(3) Place the longitudinal center line of the test probe so that it
coincides with the designated impact point, and align the test probe so
that at impact, the probe's longitudinal center line coincides (within 2
degrees) with the line formed at the intersection of the horizontal and
midsagittal planes and passing through the designated impact point.
(4) Impact the thorax with the test probe so that at the moment of
contact the probe's longitudinal center line falls within 2 degrees of a
horizontal line in the dummy's midsagittal plane.
(5) Guide the test probe during impact so that there is no
significant lateral, vertical, or rotational movement.
(6) Allow at least 30 minutes between successive tests.
[56 FR 57836, Nov. 14, 1991, as amended at 60 FR 2897, Jan. 12, 1995, 62
FR 44227, Aug. 20, 1997]
[[Page 56]]
Sec.572.75 Lumbar spine, abdomen, and pelvis assembly and test
procedure.
(a) Lumbar spine, abdomen, and pelvis assembly. The lumbar spine,
abdomen, and pelvis consist of the part of the torso assembly designated
as SA 106C 50 and 60 on drawing SA 106C 001, sheet 2, and conform to
each applicable drawing listed on SA 106C 001, sheets 12 and 13.
(b) Lumbar spine, abdomen, and pelvis assembly response
requirements. When the lumbar spine is subjected to a force continuously
applied according to the test procedure set out in paragraph (c) of this
section, the lumbar spine assembly shall--
(1) Flex by an amount that permits the rigid thoracic spine to
rotate from the torso's initial position, as defined in (c)(3), by 40
degrees at a force level of not less that 46 pounds and not more than 52
pounds, and
(2) Straighten upon removal of the force to within 5 degrees of its
initial position when the force is removed.
(c) Lumbar spine, abdomen, and pelvis test procedure. The test
procedure for the lumbar spine, abdomen, and pelvis is as follows:
(1) Remove the dummy's head-neck assembly, arms, and lower legs,
clean and dry all component surfaces, and seat the dummy upright on a
seat as specified in Figure 42.
(2) Adjust the dummy by--
(i) Tightening the femur ballflange screws at each hip socket joint
to 50 inch-pounds torque;
(ii) Attaching the pelvis to the seating surface by a bolt D/605 as
shown in Figure 42.
(iii) Attaching the upper legs at the knee joints by the attachments
shown in drawing Figure 42.
(iv) Tightening the mountings so that the pelvis-lumbar joining
surface is horizontal; and
(v) Removing the head and neck, and installing a cylindrical
aluminum adapter (neck adapter) of 2.0 inches diameter and 2.60 inches
length as shown in Figure 42.
(3) The initial position of the dummy's torso is defined by the
plane formed by the rear surfaces of the shoulders and buttocks which is
three to seven degrees forward of the transverse vertical plane.
(4) Flex the thorax forward 50 degrees and then rearward as
necessary to return the dummy to its initial torso position, unsupported
by external means.
(5) Apply a forward pull force in the midsagittal plane at the top
of the neck adapter so that when the lumbar spine flexion is 40 degrees,
the applied force is perpendicular to the thoracic spine box.
(i) Apply the force at any torso deflection rate between 0.5 and 1.5
degrees per second, up to 40 degrees of flexion.
(ii) For 10 seconds, continue to apply a force sufficient to
maintain 40 degrees of flexion, and record the highest applied force
during the 10 second period.
(iii) Release all force as rapidly as possible, and measure the
return angle 3 minutes after the release.
Sec.572.76 Limbs assembly and test procedure.
(a) Limbs assembly. The limbs consist of the assemblies designated
as SA 106C 041, SA 106C 042, SA 106C 071, and SA 106C 072, on drawing
No. SA 106C 001, sheet 2, and conform to each applicable drawing listed
on SA 106C 001, sheets 14 through 17.
(b) Limbs assembly impact response requirement. When each knee is
impacted at 7.0 0.1 fps, according to paragraph
(c) of this section, the maximum force on the femur shall not be more
than 1060 pounds and not less than 780 pounds, with a duration above 400
pounds of not less than 0.8 milliseconds.
(c) Limbs test procedure. The test procedure for the limbs is as
follows:
(1) Seat and orient the dummy without back support on a seating
surface that is 11 0.2 inches above a horizontal
(floor) surface as specified in Sec.572.78(c).
(i) Orient the dummy as specified in Figure 43 with the hip joint
adjustment at any setting between 1g and 2g.
(ii) Place the dummy legs in a plane parallel to the dummy's
midsagittal plane with the knee pivot center line perpendicular to the
dummy's midsagittal plane, and with the feet flat on the horizontal
(floor) surface.
(iii) Adjust the feet and lower legs until the line between the
midpoint of
[[Page 57]]
each knee pivot and each ankle pivot is within 2 degrees of the
vertical.
(2) If necessary, reposition the dummy so that at the level one inch
below the seating surface, the rearmost point of the dummy's lower legs
remains not less than 3 inches and not more than 6 inches forward of the
forward edge of the seat.
(3) Align the test probe specified in Sec.572.77(a) with the
longitudinal center line of the femur force gauge, so that at impact,
the probe's longitudinal center line coincides with the sensor's
longitudinal center line within 2 degrees.
(4) Impact the knee with the test probe moving horizontally and
parallel to the midsagittal plane at the specified velocity.
(5) Guide the test probe during impact so that there is no
significant lateral, vertical, or rotational movement.
Sec.572.77 Instrumentation.
(a)(1) Test probe. For the head, thorax, and knee impact test, use a
test probe that is rigid, of uniform density and weighs 10 pounds and 6
ounces, with a diameter of 3 inches; a length of 13.8 inches; and an
impacting end that has a rigid flat right face and edge radius of 0.5
inches.
(2) The head and thorax assembly may be instrumented either with a
Type A or Type B accelerometer.
(i) Type A accelerometer is defined in drawing SA 572 S1.
(ii) Type B accelerometer is defined in drawing SA 572 S2.
(b) Head accelerometers. (1) Install accelerometers in the head as
shown in drawing SA 106C 001 sheet 1 using suitable spacers or adaptors
as needed to affix them to the horizontal transverse bulkhead so that
the sensitive axes of the three accelerometers intersect at the point in
the midsagittal plane located 0.4 inches below the intersection of a
line connecting the longitudinal center lines of the roll pins in either
side of the dummy's head with the head's midsagittal plane.
(2) The head has three orthogonally mounted accelerometers aligned
as follows:
(i) Align one accelerometer so that its sensitive axis is
perpendicular to the horizontal bulkhead in the midsagittal plane.
(ii) Align the second accelerometer so that its sensitive axis is
parallel to the horizontal bulkhead, and perpendicular to the
midsagittal plane.
(iii) Align the third accelerometer so that its sensitive axis is
parallel to the horizontal bulkhead in the midsagittal plane.
(iv) The seismic mass center for any of these accelerometers may be
at any distance up to 0.4 inches from the axial intersection point.
(c) Thoracic accelerometers. (1) Install accelerometers in the
thoracic assembly as shown in drawing SA 106C 001, sheet 1, using
suitable spacers and adaptors to affix them to the frontal surface of
the spine assembly so that the sensitive axes of the three
accelerometers intersect at a point in the midsagittal plane located
0.95 inches posterior of the spine mounting surface, and 0.55 inches
below the horizontal centerline of the two upper accelerometer mount
attachment hole centers.
(2) The sternum-thoracic assembly has three orthogonally mounted
accelerometers aligned as follows:
(i) Align one accelerometer so that its sensitive axis is parallel
to the attachment surface in the midsagittal plane.
(ii) Align the second accelerometer so that its sensitive axis is
parallel to the attachment surface, and perpendicular to the midsagittal
plane.
(iii) Align the third accelerometer so that its sensitive axis is
perpendicular to the attachment surface in the midsagittal plane.
(iv) The seismic mass center for any of these accelerometers may be
at any distance up to 0.4 inches of the axial intersection point.
(d) Femur-sensing device. Install a force-sensing device SA 572-S10
axially in each femur shaft as shown in drawing SA 106C 072 and secure
it to the femur assembly so that the distance measured between the
center lines of two attachment bolts is 3.00 inches.
(e) Limb joints. Set the limb joints at lg, barely restraining the
limb's weight when the limb is extended horizontally, and ensure that
the force required to move the limb segment does not exceed 2g
throughout the limb's range of motion.
[[Page 58]]
(f) Recording outputs. Record the outputs of acceleration and force-
sensing devices installed in the dummy and in the test apparatus
specified in this part, in individual channels that conform to the
requirements of SAE Recommended Practice J211, October 1988, with
channel classes as set out in the following table C.
Table C
------------------------------------------------------------------------
Device Channel
------------------------------------------------------------------------
Head acceleration......................... Class 1000
Pendulum acceleration..................... Class 60
Thorax acceleration....................... Class 180
Femur-force............................... Class 600
------------------------------------------------------------------------
The mountings for sensing devices shall have no resonance frequency
within a range of 3 times the frequency range of the applicable channel
class.
Sec.572.78 Performance test conditions.
(a) Conduct performance tests at any temperature from 66 [deg]F to
78 [deg]F, and at any relative humidity from 10 percent to 70 percent,
but only after having first exposed the dummy to these conditions for a
period of not less than 4 hours.
(b) For the performance tests specified in Sec.572.72 (head),
Sec.572.74 (thorax), Sec.572.75 (lumbar spine, abdomen, and pelvis),
and Sec.572.76 (limbs), position the dummy as set out in paragraph (c)
of this section.
(c) Place the dummy on a horizontal seating surface covered by
teflon sheeting so that the dummy's midsagittal plane is vertical and
centered on the test surface.
(1) The seating surface is flat, rigid, clean, and dry, with a
smoothness not exceeding 40 microinches, a length of at least 16 inches,
and a width of at least 16 inches.
(2) For head impact tests, the seating surface has a vertical back
support whose top is 12.4 0.2 inches above the
horizontal surface, and the rear surfaces of the dummy's back and
buttocks touch the back support as shown in Figure 40.
(3) For the thorax, lumbar spine, and knee tests, the horizontal
surface is without a back support as shown in Figure 41 (for the
thorax); Figure 42 (for the lumbar spine); and Figure 43 (for the knee).
(4) Position the dummy's arms and legs so that their center lines
are in planes parallel to the midsagittal plane.
(5) Adjust each shoulder yoke so that with its upper surface
horizontal, a yoke is at the midpoint of its anterior-posterior travel.
(6) Adjust the dummy for head and knee impact tests so that the rear
surfaces of the shoulders and buttocks are tangent to a transverse
vertical plane.
(d) The dummy's dimensions are specified in drawings SA 106C 001,
sheet 3, Revision A, July 11, 1997, and sheets 4 through 6.
(e) Unless otherwise specified in this regulation, performance tests
of the same component, segment, assembly or fully assembled dummy are
separated in time by a period of not less than 20 minutes.
(f) Unless otherwise specified in this regulation, the surfaces of
the dummy components are not painted.
[56 FR 57836, Nov. 14, 1991, as amended at 62 FR 44227, Aug. 20, 1997]
Sec. Figures to Subpart I of Part 572
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[GRAPHIC] [TIFF OMITTED] TC01AU91.170
[60 FR 2898, Jan. 12, 1995]
[[Page 61]]
[GRAPHIC] [TIFF OMITTED] TC01AU91.171
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[GRAPHIC] [TIFF OMITTED] TC01AU91.172
Subpart J_9-Month Old Child
Source: 56 FR 41080, Aug. 19, 1991, unless otherwise noted.
Sec.572.80 Incorporated materials.
The drawings and specifications referred to in Sec.572.81(a) that
are not set forth in full are hereby incorporated in
[[Page 63]]
this part by reference. These materials are thereby made part of this
regulation. The Director of the Federal Register approved the materials
incorporated by reference in accordance with 5 U.S.C. 552(a) and 1 CFR
part 51. Copies of the materials may be obtained from Rowley-Scher
Reprographics, Inc., 1216 K Street, NW., Washington, DC 20002, telephone
(202) 628-6667. Copies are available for inspection in the general
reference section of Docket 89-11, Docket Section, National Highway
Traffic Safety Administration, room 5109, 400 Seventh Street, SW.,
Washington, DC, or at the National Archives and Records Administration
(NARA). For information on the availability of this material at NARA,
call 202-741-6030, or go to: http://www.archives.gov/federal_register/
code_of_federal_regulations/ibr_locations.html.
Sec.572.81 General description.
(a) The dummy consists of: (1) The assembly specified in drawing LP
1049/A, March 1979, which is described in its entirety by means of
approximately 54 separate drawings and specifications, 1049/1 through
1049/54; and (2) a parts list LP 1049/0 (5 sheets); and (3) a report
entitled, ``The TNO P3/4 Child Dummy Users Manual,'' January 1979,
published by Instituut voor Wegtransportmiddelen TNO.
(b) Adjacent dummy segments are joined in a manner such that
throughout the range of motion and also under simulated crash-impact
conditions there is no contact between metallic elements except for
contacts that exist under static conditions.
(c) The structural properties of the dummy are such that the dummy
conforms to this part in every respect both before and after being used
in dynamic tests such as that specified in Standard No. 213 of this
chapter (Sec.571.213).
Sec.572.82 Head.
The head consists of the assembly shown in drawing LP 1049/A and
conforms to each of the applicable drawings listed under LP 1049/0
through 54.
Sec.572.83 Head-neck.
The head-neck assembly shown in drawing 1049/A consists of parts
specified as items 1 through 16 and in item 56.
Sec.572.84 Thorax.
The thorax consists of the part of the torso shown in assembly
drawing LP 1049/A and conforms to each of the applicable drawings listed
under LP 1049/0 through 54.
Sec.572.85 Lumbar spine flexure.
(a) When subjected to continuously applied force in accordance with
paragraph (b) of this section, the lumbar spine assembly shall flex by
an amount that permits the thoracic spine to rotate from its initial
position in accordance with Figure No. 18 of Sec.572.21 (49 CFR part
572) by 40 degrees at a force level of not less than 18 pounds and not
more than 22 pounds, and straighten upon removal of the force to within
5 degrees of its initial position.
(b) Test procedure. (1) The lumbar spine flexure test is conducted
on a dummy assembly as shown in drawing LP 1049/A, but with the arms
(which consist of parts identified as items 17 through 30) and all head-
neck parts (identified as items 1 through 13 and 59 through 63),
removed.
(2) With the torso assembled in an upright position, adjust the
lumbar cable by tightening the adjustment nut for the lumbar vertebrae
until the spring is compressed to \2/3\ of its unloaded length.
(3) Position the dummy in an upright seated position on a seat as
indicated in Figure No. 18 of Sec.572.21 (lower legs do not need to be
removed, but must be clamped firmly to the seating surface), ensuring
that all dummy component surfaces are clean, dry and untreated unless
otherwise specified.
(4) Firmly affix the dummy to the seating surface through the pelvis
at the hip joints by suitable clamps that also prevent any relative
motion with respect to the upper legs during the test in Sec.
572.65(c)(3) of this part. Install a pull attachment at the neck to
torso juncture as shown in Figure 18 of Sec.572.21.
(5) Flex the thorax forward 50 degrees and then rearward as
necessary to return it to its initial position.
(6) Apply a forward pull force in the midsagittal plane at the top
of the
[[Page 64]]
neck adapter so that at 40 degrees of the lumbar spine flexion the
applied force is perpendicular to the thoracic spine box. Apply the
force at any torso deflection rate between 0.5 and 1.5 degrees per
second up to 40 degrees of flexion but no further; maintain 40 degrees
of flexion for 10 seconds, and record the highest applied force during
that time. Release all force as rapidly as possible and measure the
return angle three minutes after release.
Sec.572.86 Test conditions and dummy adjustment.
(a) With the complete torso on its back lying on a horizontal
surface and the neck assembly mounted and shoulders on the edge of the
surface, adjust the neck such that the head bolt is lowered 0.40 0.05 inches (10 1 mm) after a
vertically applied load of 11.25 pounds (50 N) applied to the head bolt
is released.
(b) With the complete torso on its back with the adjusted neck
assembly as specified in Sec.572.66(a), and lying on a horizontal
surface with the shoulders on the edge of the surface, mount the head
and tighten the head bolt and nut firmly, with the head in horizontal
position. Adjust the head joint at the force between 1-2g, which just
supports the head's weight.
(c) Using the procedures described below, limb joints are set at the
force between 1-2g, which just supports the limbs' weight when the limbs
are extended horizontally forward:
(1) With the complete torso lying with its front down on a
horizontal surface, with the hip joint just over the edge of the
surface, mount the upper leg and tighten hip joint nut firmly. Adjust
the hip joint by releasing the hip joint nut until the upper leg just
starts moving.
(2) With the complete torso and upper leg lying with its front up on
a horizontal surface, with the knee joint just over the edge of the
surface, mount the lower leg and tighten knee joint firmly. Adjust the
knee joint by releasing the knee joint nut until the lower leg just
starts moving.
(3) With the torso in an upright position, mount the upper arm and
tighten firmly the adjustment bolts for the shoulder joint with the
upper arm placed in a horizontal position. Adjust the shoulder joint by
releasing the shoulder joint nut until the upper arm just starts moving.
(4) With the complete torso in an upright position and upper arm in
a vertical position, mount the forearm in a horizontal position and
tighten the elbow hinge bolt and nut firmly. Adjust the elbow joint nut
until the forearm just starts moving.
(d) With the torso assembled in an upright position, the adjustment
nut for the lumbar vertebrae is tightened until the spring is compressed
to \2/3\ of its unloaded length.
(e) Performance tests are conducted at any temperature from 66 to 78
degrees F and at any relative humidity from 10 percent to 70 percent
after exposure of the dummy to these conditions for a period of not less
than four hours.
(f) Performance tests of the same component, segment, assembly or
fully assembled dummy are separated in time by a period of not less than
20 minutes unless otherwise specified.
(g) Surfaces of the dummy components are not painted except as
specified in the part or in drawings incorporated by this part.
Subpart K_Newborn Infant
Source: 58 FR 3232, Jan. 8, 1993, unless otherwise noted.
Sec.572.90 Incorporation by reference.
(a) The drawings and specifications referred to in Sec.572.91(a)
are hereby incorporated in subpart K by reference. These materials are
thereby made part of this regulation. The Director of the Federal
Register approved that materials incorporated by reference in accordance
with 5 U.S.C. 552(a) and 1 CFR part 51. Copies of the materials may be
inspected at NHTSA's Docket Section, 400 Seventh Street, SW., room 5109,
Washington, DC, or at the National Archives and Records Administration
(NARA). For information on the availability of this material at NARA,
call 202-741-6030, or go to: http://www.archives.gov/federal_register/
code_of_federal_regulations/ibr_locations.html.
[[Page 65]]
(b) The incorporated material is available as follows:
(1) Drawing numbers 126-0000 through 126-0015 (sheets 1 through 3),
126-0017 through 126-0027, and a parts list entitled ``Parts List for
CAMI Newborn Dummy,'' are available from Reprographic Technologies, 1111
14th Street, NW., Washington, DC 20005. (202) 628-6667.
(2) A construction manual entitled, ``Construction of the Newborn
Infant Dummy'' (July 1992) is available from Reprographic Technologies
at the address in paragraph (b)(1) of this section.
Sec.572.91 General description.
(a) The representative newborn infant dummy consists of a drawings
and specifications package that contains the following materials:
(1) Drawing numbers 126-0000 through 126-0015 (sheets 1 through 3),
126-0017 through 126-0027, and a parts list entitled ``Parts List for
CAMI Newborn Dummy''; and,
(2) A construction manual entitled, ``Construction of the Newborn
Infant Dummy'' (July 1992).
(b) The structural properties of the dummy are such that the dummy
conforms to this part in every respect both before and after being used
in dynamic tests specified in Standard No. 213 of this chapter (Sec.
571.213).
Subpart L_Free Motion Headform
Source: 60 FR 43058, Aug. 18, 1995, unless otherwise noted.
Sec.572.100 Incorporation by Reference.
(a) The drawings and specifications referred to in Sec.572.101 are
hereby incorporated in subpart L by reference. These materials are
thereby made part of this regulation. The Director of the Federal
Register approved the materials incorporated by reference in accordance
with 5 U.S.C. 552(a) and 1 CFR part 51. Copies of the materials may be
inspected at NHTSA's Docket Section, 400 Seventh Street, S.W., room
5109, Washington, DC, or at the National Archives and Records
Administration (NARA). For information on the availability of this
material at NARA, call 202-741-6030, or go to: http://www.archives.gov/
federal_register/code_of_federal_regulations/ibr_locations.html.
(b) The incorporated material is available as follows:
(1) Drawing number 92041-001, ``Head Form Assembly,'' (November 30,
1992); drawing number 92041-002, ``Skull Assembly,'' (November 30,
1992); drawing number 92041-003, ``Skull Cap Plate Assembly,'' (November
30, 1992); drawing number 92041-004, ``Skull Cap Plate,'' (November 30,
1992); drawing number 92041-005, ``Threaded Pin,'' (November 30, 1992);
drawing number 92041-006, ``Hex Nut,'' (November 30, 1992); drawing
number 92041-008, ``Head Skin without Nose,'' (November 30, 1992, as
amended March 6, 1995); drawing number 92041-009, ``Six-Axis Load Cell
Simulator Assembly,'' (November 30, 1992); drawing number 92041-011,
``Head Ballast Weight,'' (November 30, 1992); drawing number 92041-018,
``Head Form Bill of Materials,'' (November 30, 1992); drawing number
78051-148, ``Skull-Head (cast) Hybrid III,'' (May 20, 1978, as amended
August 17, 1978); drawing number 78051-228/78051-229, ``Skin- Hybrid
III,'' (May 20, 1978, as amended through September 24, 1979); drawing
number 78051-339, ``Pivot Pin-Neck Transducer,'' (May 20, 1978, as
amended May 14, 1986); drawing number 78051-372, ``Vinyl Skin
Formulation Hybrid III,'' (May 20, 1978); and drawing number C-1797,
``Neck Blank, (August 1, 1989); drawing number SA572-S4, ``Accelerometer
Specification,'' (November 30, 1992), are available from Reprographic
Technologies, 1111 14th Street, N.W., Washington, DC 20005.
(2) A user's manual entitled ``Free-Motion Headform User's Manual,''
version 2, March 1995, is available from NHTSA's Docket Section at the
address in paragraph (a) of this section.
(3) SAE Recommended Practice J211, OCT 1988, ``Instrumentation for
Impact Tests,'' Class 1000, is available from The Society of Automotive
Engineers, Inc., 400 Commonwealth Drive, Warrendale, PA 15096.
Sec.572.101 General description.
(a) The free motion headform consists of the component assembly
which is shown in drawings 92041-001 (incorporated by reference; see
Sec.572.100), 92041-002 (incorporated by reference;
[[Page 66]]
see Sec.572.100), 92041-003 (incorporated by reference; see Sec.
572.100), 92041-004 (incorporated by reference; see Sec.572.100),
92041-005 (incorporated by reference; see Sec.572.100), 92041-006
(incorporated by reference; see Sec.572.100), 92041-008 (incorporated
by reference; see Sec.572.100), 92041-009 (incorporated by reference;
see Sec.572.100), 92041-011 (incorporated by reference; see Sec.
572.100), 78051-148 (incorporated by reference; see Sec.572.100),
78051-228/78051-229 (incorporated by reference; see Sec.572.100),
78051-339 (incorporated by reference; see Sec.572.100), 78051-372
(incorporated by reference; see Sec.572.100), C-1797 (incorporated by
reference; see Sec.572.100), and SA572-S4 (incorporated by reference;
see Sec.572.100).
(b) Disassembly, inspection, and assembly procedures, and sign
convention for the signal outputs of the free motion headform
accelerometers, are set forth in the Free-Motion Headform User's Manual
(incorporated by reference; see Sec.572.100).
(c) The structural properties of the headform are such that it
conforms to this part in every respect both before and after being used
in the test specified in Standard No. 201 of this chapter (Sec.
571.201).
(d) The outputs of accelerometers installed in the headform are
recorded in individual data channels that conform to the requirements of
SAE Recommended Practice J211, OCT 1988, ``Instrumentation for Impact
Tests,'' Class 1000 (incorporated by reference; see Sec.572.100).
Sec.572.102 Drop test.
(a) When the headform is dropped from a height of 14.8 inches in
accordance with paragraph (b) of this section, the peak resultant
accelerations at the location of the accelerometers mounted in the
headform as shown in drawing 92041-001 (incorporated by reference; see
Sec.572.100) shall not be less than 225g, and not more than 275g. The
acceleration/time curve for the test shall be unimodal to the extent
that oscillations occurring after the main acceleration pulse are less
than ten percent (zero to peak) of the main pulse. The lateral
acceleration vector shall not exceed 15g (zero to peak).
(b) Test procedure. (1) Soak the headform in a test environment at
any temperature between 19 degrees C. to 26 degrees C. and at a relative
humidity from 10 percent to 70 percent for a period of at least four
hours prior to its use in a test.
(2) Clean the headform's skin surface and the surface of the impact
plate with 1,1,1 Trichloroethane or equivalent.
(3) Suspend the headform, as shown in Figure 50. Position the
forehead below the chin such that the skull cap plate is at an angle of
28.5 0.5 degrees with the impact surface when the
midsagittal plane is vertical.
(4) Drop the headform from the specified height by means that ensure
instant release onto a rigidly supported flat horizontal steel plate,
which is 2 inches thick and 2 feet square. The plate shall have a clean,
dry surface and any microfinish of not less than 8 microinches 203.2 x
10-6 mm (rms) and not more than 80 microinches 2032 x
10-6 mm (rms).
(5) Allow at least 3 hours between successive tests on the same
headform.
Sec.572.103 Test conditions and instrumentation.
(a) Headform accelerometers shall have dimensions, response
characteristics, and sensitive mass locations specified in drawing
SA572-S4 (incorporated by reference; see Sec.572.100) and be mounted
in the headform as shown in drawing 92041-001 (incorporated by
reference; see Sec.572.100).
(b) The outputs of accelerometers installed in the headform are
recorded in individual data channels that conform to the requirements of
SAE Recommended Practice J211, OCT 1988, ``Instrumentation for Impact
Tests,'' Class 1000 (incorporated by reference; see Sec.572.100).
(c) Coordinate signs for instrumentation polarity conform to the
sign convention shown in the Free-Motion Headform User's Manual
(incorporated by reference; see Sec.572.100).
(d) The mountings for accelerometers shall have no resonant
frequency within a range of 3 times the frequency range of the
applicable channel class.
[[Page 67]]
[GRAPHIC] [TIFF OMITTED] TC01AU91.173
[60 FR 43060, Aug. 18, 1995]
[[Page 68]]
Subpart M_Side Impact Hybrid Dummy 50th Percentile Male
Source: 63 FR 41470, Aug. 4, 1998, unless otherwise noted.
Sec.572.110 Materials incorporated by reference.
(a) The following materials are hereby incorporated by reference in
Subpart M:
(1) The Anthropomorphic Test Dummy Parts List, SID/Hybrid III part
572, subpart M, dated May 10, 1997.
(2) The SID/Hybrid III Part 572 Subpart M User's Manual, dated May
1997.
(3) Drawing number 96-SIDH3-001, titled, ``Head-Neck Bracket,''
dated August 30, 1996.
(4) Drawing number 96-SIDH3-006, titled, ``Upper and Middle Shoulder
Foam,'' dated May 10, 1997.
(5) Drawing number SA-SIDH3-M001, titled, ``Complete Assembly
SIDH3,'' dated April 19, 1997.
(6) Drawing number 78051-61X, Revision C, titled ``Head Assembly--
complete,'' dated March 28, 1997
(7) Drawing number 78051-90, Revision A, titled ``Neck Assembly--
complete,'' dated May 20, 1978.
(8) Dummy assembly drawing number SA-SID-M030, Revision A, titled
``Thorax Assembly--complete,'' dated May 18, 1994.
(9) Dummy assembly drawing SA-SID-M050, revision A, titled ``Lumbar
Spine Assembly,'' dated May 18, 1994.
(10) Dummy assembly drawing SA-150 M060, revision A, titled ``Pelvis
and Abdomen Assembly,'' dated May 18, 1994.
(11) Dummy assembly drawing SA-SID-053, revision A, titled ``Lumbar
Spine Assembly,'' dated May 18, 1994.
(12) Dummy assembly drawing SA-SID-M080, titled ``Leg Assembly,
Right,'' dated August 13, 1987.
(13) Dummy assembly drawing SA-SID-M081, titled ``Leg Assembly,
Left,'' dated August 13, 1987.
(14) Drawing number 78051-383X, Revision P, titled ``Neck Transducer
Structural Replacement,'' dated November 1, 1995.
(15) The Society of Automotive Engineers (SAE) J1733 Information
Report, titled ``Sign Convention for Vehicle Crash Testing,'' dated
December 1994.
(16) SAE Recommended Practice J211, ``Instrumentation for Impact
Tests,'' Parts 1 and 2, dated March 1995.
(b) The incorporated materials are available as follows:
(1) The Director of the Federal Register approved those materials
incorporated by reference in accordance with 5 U.S.C. 552(a) and 1 CFR
part 51. Copies of the materials may be inspected at NHTSA's Docket
Section, 400 Seventh Street S.W., room 5109, Washington, DC, or at the
National Archives and Records Administration (NARA). For information on
the availability of this material at NARA, call 202-741-6030, or go to:
http://www.archives.gov/federal_register/code_of_federal_regulations/
ibr_locations.html.
(2) The parts lists, user's manual and drawings referred to in
paragraphs (a)(1) through (a)(14) of this section are available from
Reprographic Technologies, 9000 Virginia Manor Road, Beltsville, MD
20705 (301) 419-5070.
(3) The SAE materials referred to in paragraphs (a)(15) and (a)(16)
of this section are available from the Society of Automotive Engineers,
Inc., 400 Commonwealth Drive, Warrendale, PA 15096.
Sec.572.111 General description.
(a) The dummy consists of component parts and component assemblies
defined in drawing SA-SIDH3-M001, dated April 19, 1997, which are
described in approximately 200 drawings and specifications that are set
forth in Sec. Sec.572.32, 572.33 and 572.41(a)(3),(4),(5) and (6) of
this part, and in the drawing of the Adaptor Bracket 96-SIDH3-001.
(1) The head assembly consists of the assembly specified in subpart
E (Sec.572.32) and conforms to each of the drawings subtended under
drawing 78051-61X rev. C.
(2) The neck assembly consists of the assembly specified in subpart
E (Sec.572.33) and conforms to each of the drawings subtended under
drawing 78051-90 rev. A.
(3) The thorax assembly consists of the assembly shown as number SID
053 and conforms to each applicable drawing subtended by number SA-SID
M030 rev. A.
[[Page 69]]
(4) The lumbar spine consists of the assembly specified in subpart B
(Sec.572.9(a)) and conforms to drawing SA 150 M050 and drawings
subtended by SA-SID M050 rev. A.
(5) The abdomen and pelvis consist of the assembly and conform to
the drawings subtended by SA 150 M060, the drawings subtended by SA 150
M060 rev. A and the drawings subtended by SA-SID-087 sheet 1 rev. H, and
SA-SID-87 sheet 2 rev. H.
(6) The lower limbs consist of the assemblies specified in Subpart B
(Sec.572.10) shown as SA 150 M080 and SA 150 M081 in Figure 1 and SA-
SID-M080 and SA-SID-M081 and conform to the drawings subtended by those
numbers.
(7) The neck mounting adaptor bracket conforms to drawing 96-SIDH3-
001.
(8) Upper and middle shoulder foams conform to drawing 96-SIDH3-006.
(b) The structural properties of the dummy are such that the dummy
conforms to the specifications of this subpart in every respect before
being used in vehicle tests specified in Standard 201.
(c) Disassembly, inspection and assembly procedures, external
dimensions, weight and drawing list are set forth in the SIDH3 User's
Manual, dated May 1997.
(d) Sign convention for signal outputs is given in the reference
document SAE J1733 of 1994-12, ``Sign Convention for Vehicle Crash
Testing.''
Sec.572.112 Head assembly.
The head assembly consists of the head (drawing 78051-61X, rev. C)
with the neck transducer structural replacement (drawing 78051-383X,
rev. P) and three (3) accelerometers that are mounted in conformance to
Sec.572.36 (c).
(a) Test procedure. (1) Soak the head assembly in a test environment
at any temperature between 18.9 and 25.6 degrees C. (66 to 78 degrees
F.) and at a relative humidity between 10 percent and 70 percent for a
period of at least four (4) hours prior to its application in a test.
(2) Clean the impact surface of the head skin and impact plate
surface, described in paragraph (a)(4) of this section, with 1,1,1
trichloroethane or equivalent prior to the test.
(3) Suspend the head, as shown in Figure 51, so that the midsagittal
plane makes an angle of 35 1 degrees with the
impact surface and its anterior-posterior axis is horizontal 1 degree.
(4) Drop the head from a height of 200 0.25 mm
(7.87 0.01 inches), measured from the lowest point
on the head, by a means that ensures a smooth, clean release into a
rigidly supported flat horizontal steel plate, which is 51 2 mm (2.0 0.01 in.) thick and 610
10 mm (24.0 0.4 in) square.
The plate shall have a dry surface and shall have a microfinish of 0.2
microns (8 microinches) to 2.0 microns (80 microinches).
(5) Allow at least two (2) hours between successive tests on the
same head.
(b) Performance criteria. (1) When the head assembly is dropped in
accordance with Sec.572.112(a), the measured peak resultant
acceleration shall be between 120 and 150 G's.
(2) The resultant acceleration-time curve shall be unimodal to the
extent that oscillations occurring after the main acceleration pulse
shall not exceed 15 percent (zero to peak) of the main pulse. The
longitudinal acceleration vector shall not exceed 15 G's.
[[Page 70]]
[GRAPHIC] [TIFF OMITTED] TR04AU98.003
Sec.572.113 Neck assembly.
The head/neck assembly consists of the parts 78051-61X, rev. C; -84;
-90, rev. A; -94; -98; -104, revision F; -303, rev. E;--305; -306; -307,
rev. X and has a six axis neck transducer (drawing C-1709, revision D)
installed in conformance with Sec.572.36(d).
[[Page 71]]
(a) Test procedure. (1) Soak the head and neck assembly in a test
environment at any temperature between 20.6 and 22.2 degrees C. (69 to
72 degrees F.) and at any relative humidity between 10 percent and 70
percent for a period of at least four (4) hours prior to its application
in a test.
(2) Torque the jamnut (78051-64) on the neck cable (78051-301, rev.
E) to 1.35 0.27 Nm (1.0 0.2
ft-lb) before each test.
(3) Using neck brackets 78051-303 and -307, mount the head/neck
assembly to the part 572 pendulum test fixture (see Sec.572.33, Figure
22,) so that the midsagittal plane of the head is vertical and
perpendicular to the plane of motion of the pendulum's longitudinal
centerline (see Sec.572.33, Figure 20, except that the direction of
the head/neck assembly is rotated around the superior-inferior axis by
an angle of 90 degrees). Install suitable transducers or other devices
necessary for measuring the ``D'' plane (horizontal surface at the base
of the skull) rotation with respect to the pendulum's longitudinal
centerline. The rotation can be measured by placing a transducer at the
occipital condyles and another at the intersection of the centerline of
the neck and the line extending from the base of the neck as shown in
figure 52.
(4) Release the pendulum and allow it to fall freely from a height
to achieve an impact velocity of 6.89 to 7.13 m/s (22.6 to 23.4 ft/sec)
measured at the center of the pendulum accelerometer.
(5) Allow the neck to flex without the head or neck contacting any
object during the test.
(6) Time zero is defined as the time of initial contact between the
striker plate and the pendulum deceleration medium.
(7) Allow a period of at least thirty (30) minutes between
successive tests on the same neck assembly.
(b) Performance criteria. (1) The pendulum deceleration pulse is to
be characterized in terms of decrease in velocity as obtained by
integrating the pendulum acceleration output.
------------------------------------------------------------------------
Time (ms) Pendulum Delta-V (m/s)
------------------------------------------------------------------------
10..................................... 1.96 to 2.55.
20..................................... 4.12 to 5.10.
30..................................... 5.73 to 7.01.
40 to 70............................... 6.27 to 7.64.
------------------------------------------------------------------------
(2) The maximum rotation of the midsagittal plane of the head shall
be 66 to 82 degrees with respect to the pendulum's longitudinal
centerline. The decaying head rotation vs. time curve shall cross the
zero angle between 58 to 67 ms after reaching its peak value.
(3) The moment about the x-axis which coincides with the midsagittal
plane of the head at the level of the occipital condyles shall have a
maximum value between 73 and 88 Nm. The decaying moment vs. time curve
shall first cross zero moment between 49 and 64 ms after reaching its
peak value. The following formula is to be used to calculate the moment
about the occipital condyles when using the six-axis neck transducer:
M = Mx + 0.01778 Fy
Where Mx and Fy are the moment and force measured by the transducer and
expressed in terms of Nm and N, respectively.
(4) The maximum rotation of the head with respect to the pendulum's
longitudinal centerline shall occur between 2 and 16 ms after peak
moment.
[63 FR 41470, Aug. 4, 1998, as amended at 66 FR 51882, Oct. 11, 2001]
Sec.572.114 Thorax.
The specifications and test procedure for the thorax for the SID/
HIII dummy are identical to those applicable to the SID dummy as set
forth in Sec.572.42 except that the reference to the SID device found
in Sec.572.42(a), (SA-SID-M001A revision A, dated May 18, 1994) does
not apply and the reference to the SID/HIII (SA-SIDH3-M001, dated April
19, 1997) is applied in its place.
[[Page 72]]
[GRAPHIC] [TIFF OMITTED] TR04AU98.004
Sec.572.115 Lumbar spine and pelvis.
The specifications and test procedure for the lumbar spine and
pelvis are identical to those for the SID dummy as set forth in Sec.
572.42 except that the reference to the SID device found in Sec.
572.42(a), (SA-SID-M001A revision A, dated May 18, 1994) does not apply
and the reference to the SID/HIII (SA-SIDH3-M001, dated April 19, 1997)
is applied in its place.
Sec.572.116 Instrumentation and test conditions.
(a) The test probe for lateral thoracic and pelvis impact tests are
the same as those specified in Sec.572.44(a).
[[Page 73]]
(b) Accelerometer mounting in the thorax is the same as specified in
Sec.572.44(b).
(c) Accelerometer mounting in the pelvis is the same as specified in
Sec.572.44(c).
(d) Head accelerometer mounting is the same as specified in Sec.
572.36(c).
(e) Neck transducer mounting is the same as specified in Sec.
572.36(d).
(f) Instrumentation and sensors used must conform to SAE Recommended
Practice J211, March 1995, ``Instrumentation for Impact Tests.''
(g) The mountings for the spine, rib and pelvis accelerometers shall
have no resonance frequency within a range of 3 times the frequency
range of the applicable channel class.
(h) Limb joints of the test dummy shall be set at the force between
1 to 2 g's, which just supports the limb's weight when the limbs are
extended horizontally forward. The force required to move a limb segment
does not exceed 2 g's throughout the range of the limb motion.
(i) Performance tests must be conducted at a temperature between
20.6 and 22.2 degrees C. (69 to 72 degrees F.) and at a relative
humidity between 10 percent and 70 percent after exposure of the dummy
to those conditions for a period of at least four (4) hours.
(j) For the performance of tests specified in Sec.572.114 and
Sec.572.115, the dummy is positioned the same as specified in Sec.
572.44(h).
Subpart N_Six-year-old Child Test Dummy, Beta Version
Source: 65 FR 2065, Jan. 13, 2000, unless otherwise noted.
Sec.572.120 Incorporation by reference.
(a) The following materials are hereby incorporated into this
subpart by reference:
(1) A drawings and inspection package entitled, ``Parts List and
Drawings, Part 572 Subpart N, Hybrid III Six-Year Old Child Crash Test
Dummy (H-III6C, Beta Version), June 2009,'' consisting of:
(i) Drawing No. 127-1000, 6-year H3 Head Complete, incorporated by
reference in Sec.572.122,
(ii) Drawing No. 127-1015, Neck Assembly, incorporated by reference
in Sec.572.123,
(iii) Drawing No. 127-2000, Upper Torso Assembly, incorporated by
reference in Sec.572.124,
(iv) Drawing No. 127-3000, Lower Torso Assembly, incorporated by
reference in Sec.572.125,
(v) Drawing No. 127-4000-1 and 4000-2, Leg Assembly, incorporated by
reference in Sec.572.126,
(vi) Drawing No. 127-5000-1 and 5000-2, Arm Assembly, incorporated
by reference in Sec. Sec.572.121, 572.124, and 572.125 as part of a
complete dummy assembly, and,
(vii) Parts List and Drawings, Hybrid III Six-year-old Child Test
Dummy (H-III6C, Beta Version), dated June 1, 2009, incorporated by
reference in Sec.572.121;
(2) A procedures manual entitled ``Procedures for Assembly,
Disassembly, and Inspection (PADI) of the Hybrid III 6-year-old Child
Crash Test Dummy (H-III6C), Beta Version, June 1, 2009,'' incorporated
by reference in Sec.572.121;
(3) SAE Recommended Practice J211-1995, ``Instrumentation for Impact
Tests--Parts 1 and 2, dated March, 1995,'' incorporated by reference in
Sec.572.127;
(4) SAE J1733 Information Report, titled ``Sign Convention for
Vehicle Crash Testing,'' dated December 1994, incorporated by reference
in Sec.572.127.
(b) The Director of the Federal Register approved the materials
incorporated by reference in accordance with 5 U.S.C. 552(a) and 1 CFR
part 51. Copies of the materials may be inspected at the Department of
Transportation, Docket Operations, Room W12-140, 1200 New Jersey Avenue,
SE., Washington, DC 20590, telephone (202) 366-9826, and at the National
Archives and Records Administration (NARA), and in electronic format
through Regulations.gov. For information on the availability and
inspection of this material at NARA, call 202-741-6030, or go to: http:/
/www.archives.gov/federal_register/code_of_federal_regulations/
ibr_locations.html. For information on the availability and inspection
of this material at Regulations.gov, call 1-877-
[[Page 74]]
378-5457, or go to: http://www.regulations.gov.
(c) The incorporated materials are available as follows:
(1) The drawings and specifications package, the parts list, and the
PADI document referred to in paragraphs (a)(1), and (a)(2) of this
section, are available in electronic format through www.Regulations.gov
and in paper format from Leet-Melbrook, Division of New RT, 18810
Woodfield Road, Gaithersburg, MD 20879, (301) 670-0090.
(2) The SAE materials referred to in paragraphs (a)(3) and (a)(4) of
this section are available from the Society of Automotive Engineers,
Inc., 400 Commonwealth Drive, Warrendale, PA 15096.
[65 FR 2065, Jan. 13, 2000, as amended at 67 FR 47327, July 18, 2002; 75
FR 76645, Dec. 9, 2010]
Sec.572.121 General description.
(a) The Hybrid III type 6-year-old dummy is defined by drawings and
specifications containing the following materials:
(1) Technical drawings and specifications package P/N 127-0000, the
titles of which are listed in Table A;
(2) Procedures for Assembly, Disassembly, and Inspection (PADI) of
the Hybrid III 6-year-old child crash test dummy (H-III6C), Beta
version, dated June 1, 2009, incorporated by reference in Sec.572.120.
Table A
------------------------------------------------------------------------
Drawing
Component assembly number
------------------------------------------------------------------------
Head assembly............................................... 127-1000
Neck assembly............................................... 127-1015
Upper torso assembly........................................ 127-2000
Lower torso assembly........................................ 127-3000
Leg assembly................................................ 127-4000
Arm assembly................................................ 127-5000
------------------------------------------------------------------------
(b) Adjacent segments are joined in a manner such that except for
contacts existing under static conditions, there is no contact between
metallic elements throughout the range of motion or under simulated
crash impact conditions.
(c) The structural properties of the dummy are such that the dummy
must conform to this Subpart in every respect before use in any test
similar to those specified in Standard 208, ``Occupant Crash
Protection'', and Standard 213, ``Child Restraint Systems''.
[65 FR 2065, Jan. 13, 2000, as amended at 75 FR 76645, Dec. 9, 2010]
Sec.572.122 Head assembly and test procedure.
(a) The head assembly for this test consists of the complete head
(drawing 127-1000), a six-axis neck transducer (drawing SA572-S11) or
its structural replacement (drawing 78051-383X), a head to neck-to-pivot
pin (drawing 78051-339), and 3 accelerometers (drawing SA572-S4).
(b) When the head assembly in paragraph (a) of this section is
dropped from a height of 376.0 1.0 mm (14.8 0.04 in) in accordance with paragraph (c) of this
section, the peak resultant acceleration at the location of the
accelerometers at the head CG may not be less than 245 G or more than
300 G. The resultant acceleration vs. time history curve shall be
unimodal; oscillations occurring after the main pulse must be less than
10 percent of the peak resultant acceleration. The lateral acceleration
shall not exceed 15 g's (zero to peak).
(c) Head test procedure. The test procedure for the head is as
follows:
(1) Soak the head assembly in a controlled environment at any
temperature between 18.9 and 25.6 [deg]C (66 and 78 [deg]F) and a
relative humidity from 10 to 70 percent for at least four hours prior to
a test.
(2) Prior to the test, clean the impact surface of the skin and the
impact plate surface with isopropyl alcohol, trichloroethane, or an
equivalent. The skin of the head must be clean and dry for testing.
(3) Suspend the head assembly as shown in Figure N1. The lowest
point on the forehead must be 376.0 1.0 mm (14.8
0.04 in) from the impact surface and the head must
be oriented to an incline of 62 1 deg. between the
``D'' plane as shown in Figure N1 and the plane of the impact surface.
The 1.57 mm (0.062 in) diameter holes located on either side of the
dummy's head shall be used to ensure that the head is level with respect
to the impact surface.
(4) Drop the head assembly from the specified height by means that
ensure a smooth, instant release onto a rigidly
[[Page 75]]
supported flat horizontal steel plate which is 50.8 mm (2 in) thick and
610 mm (24 in) square. The impact surface shall be clean, dry and have a
micro finish of not less than 203.2. x 10-6 mm (8 micro
inches) (RMS) and not more than 2032.0 x 10-6 mm (80 micro
inches) (RMS).
(5) Allow at least 2 hours between successive tests on the same
head.
Sec.572.123 Neck assembly and test procedure.
(a) The neck assembly for the purposes of this test consists of the
assembly of components shown in drawing 127-1015.
(b) When the head-neck assembly consisting of the head (drawing 127-
1000), neck (drawing 127-1015), pivot pin (drawing 78051-339), bib
simulator (drawing TE127-1025, neck bracket assembly (drawing 127-8221),
six-axis neck transducer (drawing SA572-S11), neck mounting adaptor
(drawing TE-2208-001), and three accelerometers (drawing SA572-S4)
installed in the head assembly as specified in Sec.572.122, is tested
according to the test procedure in paragraph (c) of this section, it
shall have the following characteristics:
(1) Flexion. (i) Plane D, referenced in Figure N2, shall rotate in
the direction of preimpact flight with respect to the pendulum's
longitudinal centerline between 74 degrees and 92 degrees. Within this
specified rotation corridor, the peak moment about the occipital
condyles shall be not less than 27 N-m (19.9 ft-lbf) and not more than
33 N-m (24.3 ft-lbf).
(ii) The positive moment shall decay for the first time to 5 N-m
(3.7 ft-lbf) between 103 ms and 123 ms.
(iii) The moment shall be calculated by the following formula:
Moment (N-m) = My-(0.01778m) x (FX).
(iv) My is the moment about the y-axis and FX
is the shear force measured by the neck transducer (drawing SA572-S11)
and 0.01778m is the distance from force to occipital condyle.
(2) Extension. (i) Plane D, referenced in Figure N3, shall rotate in
the direction of preimpact flight with respect to the pendulum's
longitudinal centerline between 85 degrees and 103 degrees. Within this
specified rotation corridor, the peak moment about the occipital
condyles shall be not more than -19 N-m (-14 ft-lbf) and not less than -
24 N-m (-17.7ft-lbf).
(ii) The negative moment shall decay for the first time to -5 N-m (-
3.7 ft-lbf) between 123 ms and 147 ms.
(iii) The moment shall be calculated by the following formula:
Moment (N-m) = My-(0.01778m) x (FX).
(iv) My is the moment about the y-axis and FX
is the shear force measured by the neck transducer (drawing SA572-S11)
and 0.017778m is the distance from force to occipital condyle.
(3) Time-zero is defined as the time of initial contact between the
pendulum striker plate and the honeycomb material.
(c) Test procedure. The test procedure for the neck assembly is as
follows:
(1) Soak the neck assembly in a controlled environment at any
temperature between 20.6 and 22.2 [deg]C (69 and 72 [deg]F) and a
relative humidity between 10 and 70 percent for at least four hours
prior to a test.
(2) Torque the jam nut (drawing 9000341) on the neck cable (drawing
127-1016) to 0.23 0.02 N-m (2.0 0.2 in-lbs).
(3) Mount the head-neck assembly, defined in paragraph (b) of this
section, on the pendulum so the midsagittal plane of the head is
vertical and coincides with the plane of motion of the pendulum as shown
in Figure N2 for flexion tests and Figure N3 for extension tests.
(4) Release the pendulum and allow it to fall freely from a height
to achieve an impact velocity of 4.95 0.12 m/s
(16.2 0.4 ft/s) for flexion tests and 4.3 0.12 m/s (14.10 0.40 ft/s) for
extension tests, measured by an accelerometer mounted on the pendulum as
shown in Figure 22 of 49 CFR 572 at the instant of contact with the
honey comb.
(i) Time-zero is defined as the time of initial contact between the
pendulum striker plate and the honeycomb material. All data channels
should be at the zero level at this time.
(ii) Stop the pendulum from the initial velocity with an
acceleration vs. time pulse which meets the velocity change as specified
below. Integrate the pendulum acceleration data channel to obtain the
velocity vs. time curve:
[[Page 76]]
Table B
----------------------------------------------------------------------------------------------------------------
Time Pendulum pulse
----------------------------------------------------------------------------------------------------------------
Flexion Extension
ms ---------------------------------------------------
m/s ft/s m/s ft/s
----------------------------------------------------------------------------------------------------------------
10.......................................................... 1.2-1.6 3.9-5.3 1.0-1.4 3.3-4.6
20.......................................................... 2.4-3.4 7.9-11.2 2.2-3.0 7.2-9.8
30.......................................................... 3.8-5.0 12.5-16.4 3.2-4.2 10.5-13.8
----------------------------------------------------------------------------------------------------------------
Sec.572.124 Thorax assembly and test procedure.
(a) Thorax (upper torso) assembly. The thorax consists of the part
of the torso assembly shown in drawing 127-2000.
(b) When the anterior surface of the thorax of a completely
assembled dummy (drawing 127-0000) is impacted by a test probe
conforming to section 572.127(a) at 6.71 0.12 m/s
(22.0 0.4 ft/s) according to the test procedure in
paragraph (c) of this section:
(1) The maximum sternum displacement (compression) relative to the
spine, measured with chest deflection transducer (drawing SA572-S50),
must be not less than 38.0 mm (1.50 in) and not more than 46.0 mm (1.80
in). Within this specified compression corridor, the peak force,
measured by the probe in accordance with section 572.127, shall not be
less than 1150 N (259 lbf) and not more than 1380 N (310 lbf). The peak
force after 12.5 mm (0.5 in) of sternum displacement but before reaching
the minimum required 38.0 mm (1.5 in) sternum displacement limit shall
not exceed 1500 N (337.2 lbf).
(2) The internal hysteresis of the ribcage in each impact as
determined by the plot of force vs. deflection in paragraph (b)(1) of
this section shall be not less than 65 percent but not more than 85
percent.
(c) Test procedure. The test procedure for the thorax assembly is as
follows:
(1) Soak the dummy in a controlled environment at any temperature
between 20.6[deg] and 22.2 [deg]C (69[deg] and 72 [deg]F) and a relative
humidity between 10 and 70 percent for at least four hours prior to a
test.
(2) Seat and orient the dummy, wearing tight-fitting underwear or
equivalent consisting of a size 5 short-sleeved shirt having a weight
less than 0.090 kg (0.2 lb) and an opening at the top just large enough
to permit the passage of the head with a tight fit, and a size 4 pair of
long pants having a weight of less than 0.090 kg (0.2 lb) with the legs
cut off sufficiently above the knee to allow the knee target to be
visible, on a seating surface without back support as shown in Figure
N4, with the limbs extended horizontally and forward, parallel to the
midsagittal plane, the midsagittal plane vertical within 1 degree and the ribs level in the anterior-posterior
and lateral directions within 0.5 degrees.
(3) Establish the impact point at the chest midsagittal plane so
that the impact point of the longitudinal centerline of the probe
coincides with the midsagittal plane of the dummy within 2.5 mm (0.1 in) and is 12.7 1.1 mm
(0.5 0.04 in) below the horizontal-peripheral
centerline of the No. 3 rib and is within 0.5 degrees of a horizontal
line in the dummy's midsagittal plane.
(4) Impact the thorax with the test probe so that at the moment of
contact the probe's longitudinal center line falls within 2 degrees of a
horizontal line in the dummy's midsagittal plane.
(5) Guide the test probe during impact so that there is no
significant lateral, vertical or rotational movement.
(6) No suspension hardware, suspension cables, or any other
attachments to the probe, including the velocity vane, shall make
contact with the dummy during the test.
[65 FR 2065, Jan. 13, 2000, as amended at 67 FR 47327, July 18, 2002]
Sec.572.125 Upper and lower torso assemblies and torso flexion test
procedure.
(a) Upper/lower torso assembly. The test objective is to determine
the stiffness effects of the lumbar spine (drawing 127-3002), including
cable (drawing 127-8095), mounting plate insert (drawing 910420-048),
nylon shoulder bushing
[[Page 77]]
(drawing 9001373), nut (drawing 9001336), and abdominal insert (drawing
127-8210), on resistance to articulation between upper torso assembly
(drawing 127-2000) and lower torso assembly (drawing 127-3000).
(b)(1) When the upper torso assembly of a seated dummy is subjected
to a force continuously applied at the head to neck pivot pin level
through a rigidly attached adaptor bracket as shown in Figure N5
according to the test procedure set out in paragraph (c) of this
section, the lumbar spine-abdomen assembly shall flex by an amount that
permits the upper torso assembly to translate in angular motion until
the machined rear surface of the instrument cavity at the back of the
thoracic spine box is at 45 0.5 degrees relative
to the vertical transverse plane, at which time the force applied as
shown in Figure N5 must be not less than 147 N (33 lbf) and not more
than 200 N (45 lbf), and
(2) Upon removal of the force, the torso assembly must return to
within 8 degrees of its initial position.
(c) Test procedure. The test procedure for the torso assemblies is
as follows:
(1) Soak the dummy in a controlled environment at any temperature
between 18.9 and 25.6 [deg]C (66 and 78 [deg]F) and a relative humidity
between 10 and 70 percent for at least four hours prior to a test.
(2) Attach the dummy (with or without the legs below the femurs) to
the fixture in a seated posture as shown in Figure N5.
(3) Secure the pelvis at the pelvis instrument cavity rear face by
threading four \1/4\ in cap screws into the available threaded
attachment holes. Tighten the mountings so that the test material is
rigidly affixed to the test fixture and the pelvic-lumbar joining
surface is horizontal.
(4) Flex the thorax forward three times between vertical and until
the torso reference plane, as shown in figure N5, reaches 30 2 degrees from vertical. Bring the torso to vertical
orientation, remove all externally applied flexion forces, and wait 30
minutes before conducting the test. During the 30-minute waiting period,
the dummy's upper torso shall be externally supported at or near its
vertical orientation to prevent sagging.
(5) Remove the external support and wait two minutes. Measure the
initial orientation of the torso reference plane of the seated,
unsupported dummy as shown in Figure N5. This initial torso orientation
angle may not exceed 22 degrees.
(6) Attach the loading adapter bracket to the spine of the dummy,
the pull cable, and the load cell as shown in Figure N5.
(7) Apply a tension force in the midsagittal plane to the pull cable
as shown in Figure N5 at any upper torso deflection rate between 0.5 and
1.5 degrees per second, until the torso reference plane is at 45 0.5 degrees of flexion relative to the vertical
transverse plane as shown in Figure N5.
(8) Continue to apply a force sufficient to maintain 45 0.5 degrees of flexion for 10 seconds, and record the
highest applied force during the 10-second period.
(9) Release all force as rapidly as possible, and measure the return
angle at 3 minutes or any time thereafter after the release.
Sec.572.126 Knees and knee impact test procedure.
(a) Knee assembly. The knee assembly is part of the leg assembly
(drawing 127-4000-1 and -2).
(b) When the knee assembly, consisting of knee machined (drawing
127-4013), knee flesh (drawing 127-4011), lower leg (drawing 127-4014),
the foot assembly (drawing 127-4030-1(left) and -2 (right)) and femur
load transducer (drawing SA572-S10) or its structural replacement
(drawing 127-4007) is tested according to the test procedure in section
572.127(c), the peak resistance force as measured with the test probe
mounted accelerometer must be not less than 2.0 kN (450 lbf) and not
more than 3.0 kN (674 lbf).
(c) Test procedure. The test procedure for the knee assembly is as
follows:
(1) Soak the knee assembly in a controlled environment at any
temperature between 18.9 and 25.6 [deg]C (66 and 78 [deg]F) and a
relative humidity from 10 to 70 percent for at least four hours prior to
a test.
[[Page 78]]
(2) Mount the test material and secure it to a rigid test fixture as
shown in Figure N6. No contact is permitted between any part of the foot
or tibia and any exterior surface.
(3) Align the test probe so that throughout its stroke and at
contact with the knee it is within 2 degrees of horizontal and collinear
with the longitudinal centerline of the femur.
(4) Guide the pendulum so that there is no significant lateral
vertical or rotational movement at time-zero.
(5) The test probe velocity at the time of contact shall be 2.1
0.03 m/s (6.9 0.1 ft/s).
(6) No suspension hardware, suspension cables, or any other
attachments to the probe, including the velocity vane, shall make
contact with the dummy during testing.
[65 FR 2065, Jan. 13, 2000, as amended at 67 FR 47328, July 18, 2002]
Sec.572.127 Test conditions and instrumentation.
(a) The test probe for thoracic impacts, except for attachments,
shall be of rigid metal or metal alloy construction and concentric about
its longitudinal axis. Any attachments to the impactor, such as
suspension hardware, velocity vanes, etc., must meet the requirements of
Sec.572.124(c)(6). The impactor shall have a mass of 2.86 0.02 kg (6.3 0.05 lb) and a
minimum mass moment of inertia of 160 kg-c\2\ (0.141 lb-in-sec\2\) in
yaw and pitch about the CG of the probe. One third of the weight of
suspension cables and any attachments to the impact probe must be
included in the calculation of mass, and such components may not exceed
five percent of the total weight of the probe. The impacting end of the
probe, has a flat, continuous, and non-deformable 101.6 0.25 mm (4.00 0.01 in) diameter
face with an edge radius of 7.6/12.7 mm (0.3/0.5 in). The impactor shall
have a 101-103 mm (4.0-4.1 in) diameter cylindrical surface extending
for a minimum of 12.5 mm (0.5 in) to the rear from the impact face. The
probe's end opposite to the impact face has provisions for mounting an
accelerometer with its sensitive axis collinear with the longitudinal
axis of the probe. The impact probe shall have a free air resonant
frequency of not less than 1000 Hz limited to the direction of the
longitudinal axis of the impactor.
(b) The test probe for knee impacts, except for attachments, shall
be of rigid metal or alloy construction and concentric about its
longitudinal axis. Any attachments to the impactor, such as suspension
hardware, velocity vanes, etc., must meet the requirements of Sec.
572.126(c)(6). The impactor shall have a mass of 0.82 0.02 kg (1.8 0.05 lb) and a
minimum mass moment of inertia of 34 kg-cm2 (0.03 lb-in-sec2) in yaw and
pitch about the CG of the probe. One third of the weight of suspension
cables and any attachments to the impact probe must be included in the
calculation of mass, and such components may not exceed five percent of
the total weight of the probe. The impacting end of the probe, has a
flat, continuous, and non-deformable 76.2 0.2 mm
(3.00 0.01 in) diameter face with an edge radius
of 7.6/12.7 mm (0.3/0.5 in). The impactor shall have a 76-77 mm (3.0-3.1
in) diameter cylindrical surface extending for a minimum of 12.5 mm (0.5
in) to the rear from the impact face. The probe's end opposite to the
impact face has provisions for mounting an accelerometer with its
sensitive axis collinear with the longitudinal axis of the probe. The
impact probe shall have a free air resonant frequency of not less than
1000 Hz limited to the direction of the longitudinal axis of the
impactor.
(c) Head accelerometers shall have dimensions, response
characteristics, and sensitive mass locations specified in drawing
SA572-S4 and be mounted in the head as shown in drawing 127-0000 sheet
3.
(d) Neck force/moment transducer. (1) The upper neck force/moment
transducer shall have the dimensions, response characteristics, and
sensitive axis locations specified in drawing SA572-S11 and be mounted
in the head-neck assembly as shown in drawing 127-0000 sheet 3.
(2) The optional lower neck force/moment transducer shall have the
dimensions, response characteristics, and sensitive axis locations
specified in drawing SA572-S26 and be mounted as shown in drawing 127-
0000 sheet 3.
[[Page 79]]
(e) The thorax accelerometers shall have the dimensions, response
characteristics, and sensitive mass locations specified in drawing
SA572-S4 and be mounted in the torso assembly in triaxial configuration
at T4, and as optional instrumentation in uniaxial for- and-aft oriented
configuration on the most anterior ends of ribs 1 and 6 and at the
spine box at the levels of 1 and 6 ribs as shown in 127-0000 sheet 3.
(f) The chest deflection transducer shall have the dimensions and
response characteristics specified in drawing SA572-S50 and be mounted
in the upper torso assembly as shown in 127-0000 sheet 3.
(g) The optional lumbar spine force-moment transducer shall have the
dimensions, response characteristics, and sensitive axis locations
specified in drawing SA572-S12 and be mounted in the lower torso
assembly as shown in drawing 127-0000 sheet 3 as a replacement for
lumbar adaptor 127-3005.
(h) The optional iliac spine force transducers shall have the
dimensions and response characteristics specified in drawing SA572-S13
and be mounted in the torso assembly as shown in drawing 127-0000 sheet
3 as a replacement for ASIS load cell 127-3015-1 (left) and -2 (right).
(i) The optional pelvis accelerometers shall have the dimensions,
response characteristics, and sensitive mass locations specified in
drawing SA572-S4 and be mounted in the torso assembly in triaxial
configuration in the pelvis bone as shown in drawing 127-0000 sheet 3.
(j) The femur force transducer shall have the dimensions and
response characteristics specified in drawing SA72-S10 and be mounted in
the leg assembly as shown in drawing 127-0000 sheet 3.
(k) The outputs of acceleration and force-sensing devices installed
in the dummy and in the test apparatus specified by this part must be
recorded in individual data channels that conform to SAE Recommended
Practice J211, Rev. Mar95 ``Instrumentation for lmpact Tests,'' except
that the lumbar measurements are based on CFC 600, with channel classes
as follows:
(1) Head acceleration--Class 1000.
(2) Neck:
(i) Forces--Class 1000;
(ii) Moments--Class 600;
(iii) Pendulum acceleration--Class 180;
(iv) Rotation--Class 60 (if used).
(3) Thorax:
(i) Rib acceleration--Class 1000;
(ii) Spine and pendulum accelerations--Class 180;
(iii) Sternum deflection--Class 600.
(4) Lumbar:
(i) Forces--Class 1000;
(ii) Moments--Class 600;
(iii) Flexion--Class 60 if data channel is used.
(5) Pelvis accelerations--Class 1000.
(6) Femur forces--Class 600.
(l) Coordinate signs for instrumentation polarity shall conform to
the Sign Convention For Vehicle Crash Testing, Surface Vehicle
Information Report, SAE J1733, 1994-12.
(m) The mountings for sensing devices shall have no resonance
frequency less than 3 times the frequency range of the applicable
channel class.
(n) Limb joints must be set at one G, barely restraining the weight
of the limb when it is extended horizontally. The force needed to move a
limb segment shall not exceed 2G throughout the range of limb motion.
(o) Performance tests of the same component, segment, assembly, or
fully assembled dummy shall be separated in time by period of not less
than 30 minutes unless otherwise noted.
(p) Surfaces of dummy components may not be painted except as
specified in this subpart or in drawings subtended by this subpart.
[65 FR 2065, Jan. 13, 2000, as amended at 67 FR 47328, July 18, 2002]
[[Page 80]]
Sec. Figures to Subpart N of Part 572
[GRAPHIC] [TIFF OMITTED] TR18JY02.000
[[Page 81]]
[GRAPHIC] [TIFF OMITTED] TR18JY02.001
[[Page 82]]
[GRAPHIC] [TIFF OMITTED] TR18JY02.002
[[Page 83]]
[GRAPHIC] [TIFF OMITTED] TR13JA00.005
[[Page 84]]
[GRAPHIC] [TIFF OMITTED] TR19SE02.000
[[Page 85]]
[GRAPHIC] [TIFF OMITTED] TR18JY02.003
[65 FR 2065, Jan. 13, 2000, as amended at 67 FR 47329, July 18, 2002; 67
FR 59023, Sept. 19, 2002]
[[Page 86]]
Subpart O_Hybrid III 5th Percentile Female Test Dummy, Alpha Version
Source: 65 FR 10968, Mar. 1, 2000, unless otherwise noted.
Sec.572.130 Incorporation by reference.
(a) The following materials are hereby incorporated into this
Subpart by reference:
(1) A drawings and specification package entitled ``Parts List and
Drawings, Part 572 Subpart O Hybrid III Fifth Percentile Small Adult
Female Crash Test Dummy (HIII-5F, Alpha Version)'' (June 2002),
incorporated by reference in ``572.131, and consisting of:
(i) Drawing No. 880105-100X, Head Assembly, incorporated by
reference in Sec. Sec.572.131, 572.132, 572.133, 572.134, 572.135, and
572.137;
(ii) Drawing No. 880105-250, Neck Assembly, incorporated by
reference in Sec. Sec.572.131, 572.133, 572.134, 572.135, and 572.137;
(iii) Drawing No. 880105-300, Upper Torso Assembly, incorporated by
reference in Sec. Sec.572.131, 572.134, 572.135, and 572.137;
(iv) Drawing No. 880105-450, Lower Torso Assembly, incorporated by
reference in Sec. Sec.572.131, 572.134, 572.135, and 572.137;
(v) Drawing No. 880105-560-1, Complete Leg Assembly--left,
incorporated by reference in Sec. Sec.572.131, 572.135, 572.136, and
572.137;
(vi) Drawing No. 880105-560-2, Complete Leg Assembly--right
incorporated by reference in Sec. Sec.572.131, 572.135, 572.136, and
572.137;
(vii) Drawing No. 880105-728-1, Complete Arm Assembly--left,
incorporated by reference in Sec. Sec.572.131, 572.134, and 572.135 as
part of the complete dummy assembly;
(viii) Drawing No. 880105-728-2, Complete Arm Assembly--right,
incorporated by reference in Sec. Sec.572.131, 572.134, and 572.135 as
part of the complete dummy assembly;
(ix) The Hybrid III 5th percentile small adult female crash test
dummy parts list, incorporated by reference in Sec.572.131;
(2) A procedures manual entitled ``Procedures for Assembly,
Disassembly, and Inspection (PADI) Subpart O Hybrid III Fifth Percentile
Adult Female Crash Test Dummy (HIII-5F), Alpha Version'' (February
2002), incorporated by reference in Sec.572.132.
(3) SAE Recommended Practice J211/1, Rev. Mar 95 ``Instrumentation
for Impact Tests--Part 1--Electronic Instrumentation'', incorporated by
reference in Sec.572.137;
(4) SAE Recommended Practice J211/2, Rev. Mar 95 ``Instrumentation
for Impact Tests--Part 2--Photographic Instrumentation'' incorporated by
reference in Sec.572.137; and
(5) SAE J1733 of 1994-12 ``Sign Convention for Vehicle Crash
Testing'', incorporated by reference in Sec.572.137.
(b) The Director of the Federal Register approved the materials
incorporated by reference in accordance with 5 U.S.C. 552(a) and 1 CFR
part 51. Copies of the materials may be inspected at NHTSA's Technical
Reference Library, 400 Seventh Street SW., room 5109, Washington, DC, or
at the National Archives and Records Administration (NARA). For
information on the availability of this material at NARA, call 202-741-
6030, or go to: http://www.archives.gov/federal_register/
code_of_federal_regulations/ibr_locations.html.
(c) The incorporated materials are available as follows:
(1) The Parts List and Drawings, Part 572 Subpart O Hybrid III Fifth
Percentile Small Adult Female Crash Test Dummy, (HIII-5F, Alpha Version)
(June 2002), referred to in paragraph (a)(1) of this section and the
Procedures for Assembly, Disassembly, and Inspection (PADI) of the
Hybrid III 5th Percentile Small Adult Female Crash Test Dummy, Alpha
Version, referred to in paragraph (a)(2) of this section are available
from Reprographic Technologies, 9107 Gaither Road, Gaithersburg, MD
20877, (301) 419-5070. These documents are also accessible for reading
and copying through the DOT Docket Management System.
(2) The SAE materials referred to in paragraphs (a)(3) and (a)(4) of
this section are available from the Society of
[[Page 87]]
Automotive Engineers, Inc., 400 Commonwealth Drive, Warrendale, Pa.
15096.
[65 FR 10968, Mar. 1, 2000, as amended at 67 FR 46413, July 15, 2002]
Sec.572.131 General description.
(a) The Hybrid III fifth percentile adult female crash test dummy is
defined by drawings and specifications containing the following
materials:
(1) Technical drawings and specifications package P/N 880105-000
(refer to Sec.572.130(a)(1)), the titles of which are listed in Table
A;
(2) Parts List and Drawings, Part 572 Subpart O Hybrid III Fifth
Percentile Small Adult Female Crash Test Dummy (HIII-5F, Alpha Version)
(June 2002) (refer to Sec.572.130(a)(1)(ix)).
Table A
------------------------------------------------------------------------
Component assembly Drawing No.
------------------------------------------------------------------------
Head Assembly............................ 880105-100X
Neck Assembly............................ 880105-250
Upper Torso Assembly..................... 880105-300
Lower Torso Assembly..................... 880105-450
Complete Leg Assembly--left.............. 880105-560-1
Complete Leg Assembly--right............. 880105-560-2
Complete Arm Assembly--left.............. 880105-728-1
Complete Arm Assembly--right............. 880105-728-2
------------------------------------------------------------------------
(b) Adjacent segments are joined in a manner such that, except for
contacts existing under static conditions, there is no contact between
metallic elements throughout the range of motion or under simulated
crash impact conditions.
(c) The structural properties of the dummy are such that the dummy
conforms to this Subpart in every respect before use in any test similar
to those specified in Standard 208, Occupant Crash Protection.
[65 FR 10968, Mar. 1, 2000, as amended at 67 FR 46414, July 15, 2002]
Sec.572.132 Head assembly and test procedure.
(a) The head assembly (refer to Sec.572.130(a)(1)(i)) for this
test consists of the complete head (drawing 880105-100X), a six-axis
neck transducer (drawing SA572-S11) or its structural replacement
(drawing 78051-383X), and 3 accelerometers (drawing SA572-S4).
(b) When the head assembly is dropped from a height of 376.0 1.0 mm (14.8 0.04 in) in
accordance with subsection (c) of this section, the peak resultant
acceleration at the location of the accelerometers at the head CG may
not be less than 250 G or more than 300 G. The resultant acceleration
vs. time history curve shall be unimodal; oscillations occurring after
the main pulse must be less than 10 percent of the peak resultant
acceleration. The lateral acceleration shall not exceed 15 G (zero to
peak).
(c) Head test procedure. The test procedure for the head is as
follows:
(1) Soak the head assembly in a controlled environment at any
temperature between 18.9 and 25.6 [deg]C (66 and 78 [deg]F) and a
relative humidity from 10 to 70 percent for at least four hours prior to
a test.
(2) Prior to the test, clean the impact surface of the skin and the
impact plate surface with isopropyl alcohol, trichloroethane, or an
equivalent. The skin of the head must be clean and dry for testing.
(3) Suspend and orient the head assembly as shown in Figure 19 of 49
CFR 572. The lowest point on the forehead must be 376.0 1.0 mm (14.8 0.04 in) from the
impact surface. The 1.57 mm (0.062 in) diameter holes located on either
side of the dummy's head shall be used to ensure that the head is level
with respect to the impact surface.
(4) Drop the head assembly from the specified height by means that
ensure a smooth, instant release onto a rigidly supported flat
horizontal steel plate which is 50.8 mm (2.0 in) thick and 610 mm (24.0
in) square. The impact surface shall be clean, dry and have a micro
finish of not less than 203.2. x 10-6 mm (8 micro inches)
(RMS) and not more than 2032.0 x 10-6 mm (80 micro inches)
(RMS).
(5) Allow at least 2 hours between successive tests on the same
head.
Sec.572.133 Neck assembly and test procedure.
(a) The neck assembly (refer to Sec.572.130(a)(1)(ii)) for the
purposes of this test consists of the assembly of components shown in
drawing 880105-250.
(b) When the head-neck assembly consisting of the head (drawing
880105-100X), neck (drawing 880105-250), bib
[[Page 88]]
simulator (drawing 880105-371), upper neck adjusting bracket (drawing
880105-207), lower neck adjusting bracket (drawing 880105-208), six-axis
neck transducer (drawing SA572-S11), and either three accelerometers
(drawing SA572-S4) or their mass equivalent installed in the head
assembly as specified in drawing 880105-100X, is tested according to the
test procedure in subsection (c) of this section, it shall have the
following characteristics:
(1) Flexion. (i) Plane D, referenced in Figure O1, shall rotate in
the direction of preimpact flight with respect to the pendulum's
longitudinal centerline between 77 degrees and 91 degrees. During the
time interval while the rotation is within the specified corridor, the
peak moment, measured by the neck transducer (drawing SA5572-311), about
the occipital condyles may not be less than 69 N-m (51 ft-lbf) and not
more than 83 N-m (61 ft-lbf). The positive moment shall decay for the
first time to 10 N-m (7.4 ft-lbf) between 80 ms and 100 ms after time
zero.
(ii) The moment shall be calculated by the following formula: Moment
(N-m)= My-(0.01778m) x (Fx).
(iii) My is the moment about the y-axis, Fx is
the shear force measured by the neck transducer (drawing SA572-S11), and
0.01778m is the distance from force to occipital condyle.
(2) Extension. (i) Plane D, referenced in Figure O2, shall rotate in
the direction of preimpact flight with respect to the pendulum's
longitudinal centerline between 99 degrees and 114 degrees. During the
time interval while the rotation is within the specified corridor, the
peak moment, measured by the neck transducer (drawing SA5572-S11), about
the occipital condyles shall be not more than -53 N-m (-39 ft-lbf) and
not less than -65 N-m (-48 ft-lbf). The negative moment shall decay for
the first time to -10 N-m (-7.4 ft-lbf) between 94 ms and 114 ms after
time zero.
(ii) The moment shall be calculated by the following formula: Moment
(N-m) = My - (0.01778m) x (Fx).
(iii) My is the moment about the y-axis, Fx is
the shear force measured by the neck transducer (drawing SA572-S11), and
0.01778 m is the distance from force to occipital condyle.
(3) Time-zero is defined as the time of initial contact between the
pendulum striker plate and the honeycomb material. All data channels
shall be at the zero level at this time.
(c) Test Procedure. The test procedure for the neck assembly is as
follows:
(1) Soak the neck assembly in a controlled environment at any
temperature between 20.6 and 22.2 [deg]C (69 and 72 [deg]F) and a
relative humidity between 10 and 70 percent for at least four hours
prior to a test.
(2) Torque the jam nut (drawing 9000018) on the neck cable (drawing
880105-206) to 1.4 0.2 N-m (12.0 2.0 in-lb).
(3) Mount the head-neck assembly, defined in subsection (b) of this
section, on the pendulum described in Figure 22 of 49 CFR 572 so that
the midsagittal plane of the head is vertical and coincides with the
plane of motion of the pendulum as shown in Figure O1 for flexion tests
and Figure O2 for extension tests.
(4)(i) Release the pendulum and allow it to fall freely from a
height to achieve an impact velocity of 7.01 0.12
m/s (23.0 0.4 ft/s) for flexion tests and 6.07
0.12 m/s (19.9 0.40 ft/s)
for extension tests, measured by an accelerometer mounted on the
pendulum as shown in Figure 22 of 49 CFR 572 at the instant of contact
with the honey comb.
(ii) Stop the pendulum from the initial velocity with an
acceleration vs. time pulse which meets the velocity change as specified
below. Integrate the pendulum acceleration data channel to obtain the
velocity vs. time curve:
Table B--Pendulum Pulse
----------------------------------------------------------------------------------------------------------------
Flexion Extension
Time ms ---------------------------------------------------------------
m/s ft/s m/s ft/s
----------------------------------------------------------------------------------------------------------------
10.............................................. 2.1-2.5 6.9-8.2 1.5-1.9 4.9-6.2
20.............................................. 4.0-5.0 13.1-16.4 3.1-3.9 10.2-12.8
30.............................................. 5.8-7.0 19.5-23.0 4.6-5.6 15.1-18.4
----------------------------------------------------------------------------------------------------------------
[[Page 89]]
[65 FR 10968, Mar. 1, 2000, as amended at 67 FR 46414, July 15, 2002]
Sec.572.134 Thorax assembly and test procedure.
(a) Thorax (Upper Torso) Assembly (refer to Sec.
572.130(a)(1)(iii)). The thorax consists of the part of the torso
assembly shown in drawing 880105-300.
(b) When the anterior surface of the thorax of a completely
assembled dummy (drawing 880105-000) is impacted by a test probe
conforming to section 572.137(a) at 6.71 0.12 m/s
(22.0 0.4 ft/s) according to the test procedure in
subsection (c) of this section:
(1) Maximum sternum displacement (compression) relative to the
spine, measured with chest deflection transducer (drawing SA572-S5),
must be not less than 50.0 mm (1.97 in) and not more than 58.0 mm (2.30
in). Within this specified compression corridor, the peak force,
measured by the impact probe as defined in section 572.137 and
calculated in accordance with paragraph (b)(3) of this section, shall
not be less than 3900 N (876 lbf) and not more than 4400 N (989 lbf).
The peak force after 18.0 mm (0.71 in) of sternum displacement but
before reaching the minimum required 50.0 mm (1.97 in) sternum
displacement limit shall not exceed 4600 N.
(2) The internal hysteresis of the ribcage in each impact as
determined by the plot of force vs. deflection in paragraph (1) of this
section shall be not less than 69 percent but not more than 85 percent.
The hysteresis shall be calculated by determining the ratio of the area
between the loading and unloading portions of the force deflection curve
to the area under the loading portion of the curve.
(3) The force shall be calculated by the product of the impactor
mass and its deceleration.
(c) Test procedure. The test procedure for the thorax assembly is as
follows:
(1) The dummy is clothed in a form fitting cotton stretch above-the-
elbow sleeved shirt and above-the-knee pants. The weight of the shirt
and pants shall not exceed 0.14 kg (0.30 lb) each.
(2) Soak the dummy in a controlled environment at any temperature
between 20.6 and 22.2 [deg]C (69 and 72 [deg]F) and a relative humidity
between 10 and 70 percent for at least four hours prior to a test.
(3) Seat and orient the dummy on a seating surface without back
support as shown in Figure O3, with the limbs extended horizontally and
forward, parallel to the midsagittal plane, the midsagittal plane
vertical within 1 degree and the ribs level in the
anterior-posterior and lateral directions within 0.5 degrees.
(4) Establish the impact point at the chest midsagittal plane so
that the impact point of the longitudinal centerline of the probe
coincides with the midsagittal plane of the dummy within 2.5 mm (0.1 in) and is 12.7 1.1 mm
(0.5 0.04 in) below the horizontal-peripheral
centerline of the No. 3 rib and is within 0.5 degrees of a horizontal
line in the dummy's midsagittal plane.
(5) Impact the thorax with the test probe so that at the moment of
contact the probe's longitudinal center line falls within 2 degrees of a
horizontal line in the dummy's midsagittal plane.
(6) Guide the test probe during impact so that there is no
significant lateral, vertical or rotational movement.
(7) No suspension hardware, suspension cables, or any other
attachments to the probe, including the velocity vane, shall make
contact with the dummy during the test.
[65 FR 10968, Mar. 1, 2000, as amended at 67 FR 46415, July 15, 2002]
Sec.572.135 Upper and lower torso assemblies and torso flexion test
procedure.
(a) Upper/lower torso assembly. The test objective is to determine
the stiffness effects of the lumbar spine (drawing 880105-1096), and
abdominal insert (drawing 880105-434), on resistance to articulation
between the upper torso assembly (drawing 880105-300) and the lower
torso assembly (drawing 880105-450) (refer to Sec.572.130(a)(1)(iv)).
(b)(1) When the upper torso assembly of a seated dummy is subjected
to a force continuously applied at the head to neck pivot pin level
through a rigidly attached adaptor bracket as shown in Figure O4
according to the test procedure set out in subsection (c) of this
section, the lumbar spine-abdomen assembly shall flex by an amount that
permits the upper torso assembly to
[[Page 90]]
translate in angular motion relative to the vertical transverse plane 45
0.5 degrees at which time the force applied must
be not less than 320 N (71.5 lbf) and not more than 390 N (87.4 lbf),
and
(2) Upon removal of the force, the torso assembly must return to
within 8 degrees of its initial position.
(c) Test procedure. The test procedure for the upper/lower torso
assembly is as follows:
(1) Soak the dummy in a controlled environment at any temperature
between 18.9 and 25.6 [deg]C (66 and 78 [deg]F) and a relative humidity
between 10 and 70 percent for at least four hours prior to a test.
(2) Assemble the complete dummy (with or without the legs below the
femurs) and attach to the fixture in a seated posture as shown in Figure
O4.
(3) Secure the pelvis to the fixture at the pelvis instrument cavity
rear face by threading four \1/4\ inch cap screws into the available
threaded attachment holes. Tighten the mountings so that the test
material is rigidly affixed to the test fixture and the pelvic-lumbar
joining surface is horizontal.
(4) Attach the loading adapter bracket to the spine of the dummy as
shown in Figure O4.
(5) Inspect and adjust, if necessary, the seating of the abdominal
insert within the pelvis cavity and with respect to the torso flesh,
assuring that the torso flesh provides uniform fit and overlap with
respect to the outside surface of the pelvis flesh.
(6) Flex the dummy's upper torso three times between the vertical
and until the torso reference plane, as shown in Figure O4, reaches 30
degrees from the vertical transverse plane. Bring the torso to vertical
orientation and wait for 30 minutes before conducting the test. During
the 30 minute waiting period, the dummy's upper torso shall be
externally supported at or near its vertical orientation to prevent it
from drooping.
(7) Remove all external support and wait two minutes. Measure the
initial orientation angle of the torso reference plane of the seated,
unsupported dummy as shown in Figure O4. The initial orientation angle
may not exceed 20 degrees.
(8) Attach the pull cable and the load cell as shown in Figure O4.
(9) Apply a tension force in the midsagittal plane to the pull cable
as shown in Figure O4 at any upper torso deflection rate between 0.5 and
1.5 degrees per second, until the angle reference plane is at 45 0.5 degrees of flexion relative to the vertical
transverse plane.
(9) Continue to apply a force sufficient to maintain 45 0.5 degrees of flexion for 10 seconds, and record the
highest applied force during the 10-second period.
(10) Release all force at the attachment bracket as rapidly as
possible, and measure the return angle with respect to the initial angle
reference plane as defined in paragraph (6) 3 minutes after the release.
Sec.572.136 Knees and knee impact test procedure.
(a) Knee assembly. The knee assembly (refer to Sec. Sec.
572.130(a)(1)(v) and (vi)) for the purpose of this test is the part of
the leg assembly shown in drawing 880105-560.
(b)(1) When the knee assembly, consisting of sliding knee assembly
(drawing 880105-528R or -528L), lower leg structural replacement
(drawing 880105-603), lower leg flesh (drawing 880105-601), ankle
assembly (drawing 880105-660), foot assembly (drawing 880105-651 or
650), and femur load transducer (drawing SA572-S14) or its structural
replacement (drawing 78051-319) is tested according to the test
procedure in subsection (c), the peak resistance force as measured with
the test probe-mounted accelerometer must be not less than 3450 N (776
lbf) and not more than 4060 N (913 lbf).
(2) The force shall be calculated by the product of the impactor
mass and its deceleration.
(c) Test procedure. The test procedure for the knee assembly is as
follows:
(1) Soak the knee assembly in a controlled environment at any
temperature between 18.9 and 25.6 [deg]C (66 and 78 [deg]F) and a
relative humidity from 10 to 70 percent for at least four hours prior to
a test.
(2) Mount the test material and secure it to a rigid test fixture as
shown
[[Page 91]]
in Figure O5. No part of the foot or tibia may contact any exterior
surface.
(3) Align the test probe so that throughout its stroke and at
contact with the knee it is within 2 degrees of horizontal and collinear
with the longitudinal centerline of the femur.
(4) Guide the pendulum so that there is no significant lateral
vertical or rotational movement at the time of initial contact between
the impactor and the knee.
(5) The test probe velocity at the time of contact shall be 2.1
0.03 m/s (6.9 0.1 ft/s).
(6) No suspension hardware, suspension cables, or any other
attachments to the probe, including the velocity vane, shall make
contact with the dummy during the test.
[65 FR 10968, Mar. 1, 2000, as amended at 67 FR 46415, July 15, 2002]
Sec.572.137 Test conditions and instrumentation.
(a) The test probe for thoracic impacts, except for attachments,
shall be of rigid metallic construction and concentric about its
longitudinal axis. Any attachments to the impactor, such as suspension
hardware, impact vanes, etc., must meet the requirements of Sec.
572.134(c)(7). The impactor shall have a mass of 13.97 0.23 kg (30.8 0.5 lbs) and a
minimum mass moment of inertia of 3646 kg-cm\2\ (3.22 lbs-in-sec\2\) in
yaw and pitch about the CG of the probe. One-third (1/3) of the weight
of suspension cables and any attachments to the impact probe must be
included in the calculation of mass, and such components may not exceed
five percent of the total weight of the test probe. The impacting end of
the probe, perpendicular to and concentric with the longitudinal axis of
the probe, has a flat, continuous, and non-deformable 152.4 0.25 mm (6.00 0.01 in) diameter
face with a minimum/maximum edge radius of 7.6/12.7 mm (0.3/0.5 in). The
impactor shall have a 152.4-152.6 mm (6.0-6.1 in) diameter cylindrical
surface extending for a minimum of 25 mm (1.0 in) to the rear from the
impact face. The probe's end opposite to the impact face has provisions
for mounting of an accelerometer with its sensitive axis collinear with
the longitudinal axis of the probe. The impact probe has a free air
resonant frequency of not less than 1000 Hz, which may be determined
using the procedure listed in Docket No. NHTSA-6714-14.
(b) The test probe for knee impacts, except for attachments, shall
be of rigid metallic construction and concentric about its longitudinal
axis. Any attachments to the impactor, such as suspension hardware,
impact vanes, etc., must meet the requirements of Sec.572.136(c)(6).
The impactor shall have a mass of 2.990.23 kg
(6.60.5 lbs) and a minimum mass moment of inertia
of 209 kg-cm\2\ (0.177 lb-in-sec\2\) in yaw and pitch about the CG of
the probe. One-third (1/3) of the weight of suspension cables and any
attachments to the impact probe may be included in the calculation of
mass, and such components may not exceed five percent of the total
weight of the test probe. The impacting end of the probe, perpendicular
to and concentric with the longitudinal axis of the probe, has a flat,
continuous, and non-deformable 76.2 0.2 mm (3.00
0.01 in) diameter face with a minimum/maximum edge
radius of 7.6/12.7 mm (0.3/0.5 in). The impactor shall have a 76.2-76.4
mm (3.0-3.1 in) diameter cylindrical surface extending for a minimum of
12.5 mm (0.5 in) to the rear from the impact face. The probe's end
opposite to the impact face has provisions for mounting an accelerometer
with its sensitive axis collinear with the longitudinal axis of the
probe. The impact probe has a free air resonant frequency of not less
than 1000 Hz, which may be determined using the procedure listed in
Docket No. NHTSA-6714-14.
(c) Head accelerometers shall have dimensions, response
characteristics, and sensitive mass locations specified in drawing
SA572-S4 and be mounted in the head as shown in drawing 880105-000 sheet
3 of 6.
(d) The upper neck force/moment transducer shall have the
dimensions, response characteristics, and sensitive axis locations
specified in drawing SA572-S11 and be mounted in the head neck assembly
as shown in drawing 880105-000, sheet 3 of 6.
(e) The thorax accelerometers shall have the dimensions, response
characteristics, and sensitive mass locations specified in drawing
SA572-S4 and be
[[Page 92]]
mounted in the torso assembly in triaxial configuration within the spine
box instrumentation cavity and as optional instrumentation in uniaxial
for-and-aft oriented configuration arranged as corresponding pairs in
three locations on the sternum on and at the spine box of the upper
torso assembly as shown in drawing 880105-000 sheet 3 of 6.
(f) The optional lumbar spine force-moment transducer shall have the
dimensions, response characteristics, and sensitive axis locations
specified in drawing SA572-S15 and be mounted in the lower torso
assembly as shown in drawing 880105-450.
(g) The optional iliac spine force transducers shall have the
dimensions and response characteristics specified in drawing SA572-S16
and be mounted in the torso assembly as shown in drawing 880105-450.
(h) The pelvis accelerometers shall have the dimensions, response
characteristics, and sensitive mass locations specified in drawing
SA572-S4 and be mounted in the torso assembly in triaxial configuration
in the pelvis bone as shown in drawing 880105-000 sheet 3.
(i) The single axis femur force transducer (SA572-S14) or the
optional multiple axis femur force/moment transducer (SA572-S29) shall
have the dimensions, response characteristics, and sensitive axis
locations specified in the appropriate drawing and be mounted in the
femur assembly as shown in drawing 880105-500 sheet 3 of 6.
(j) The chest deflection transducer shall have the dimensions and
response characteristics specified in drawing SA572-S51 and be mounted
to the upper torso assembly as shown in drawings 880105-300 and 880105-
000 sheet 3 of 6.
(k) The optional lower neck force/moment transducer shall have the
dimensions, response characteristics, and sensitive axis locations
specified in drawing SA572-S27 and be mounted to the upper torso
assembly as shown in drawing 880105-000 sheet 3 of 6.
(l) The optional thoracic spine force/moment transducer shall have
the dimensions, response characteristics, and sensitive axis locations
specified in drawing SA572-S28 and be mounted in the upper torso
assembly as shown in drawing 880105-000 sheet 3 of 6.
(m) The outputs of acceleration and force-sensing devices installed
in the dummy and in the test apparatus specified by this part shall be
recorded in individual data channels that conform to SAE Recommended
Practice J211/10, Rev. Mar95 ``Instrumentation for Impact Impact
Tests;--Part 1--Electronic Instrumentation,'' and SAE Recommended
Practice J211/2, Rev Mar95 ``Instrumentation for Impact Tests--Part 2--
Photographic Instrumentation'', (refer to Sec. Sec.572.130(a)(3) and
(4) respectively) except as noted, with channel classes as follows:
(1) Head acceleration--Class 1000
(2) Neck:
(i) Forces--Class 1000
(ii) Moments--Class 600
(iii) Pendulum acceleration--Class 180
(iv) Rotation potentiometer--Class 60 (optional)
(3) Thorax:
(i) Rib acceleration--Class 1000
(ii) Spine and pendulum accelerations--Class 180
(iii) Sternum deflection--Class 600
(iv) Forces--Class 1000
(v) Moments--Class 600
(4) Lumbar:
(i) Forces--Class 1000
(ii) Moments--Class 600
(iii) Torso flexion pulling force--Class 60 if data channel is used
(5) Pelvis:
(i) Accelerations--Class 1000
(ii) Iliac wing forces--Class 180
(6) Femur forces and knee pendulum--Class 600
(n) Coordinate signs for instrumentation polarity shall conform to
the Sign Convention For Vehicle Crash Testing, Surface Vehicle
Information Report, SAE J1733, 1994-12 (refer to section 572.130(a)(4)).
(o) The mountings for sensing devices shall have no resonance
frequency less than 3 times the frequency range of the applicable
channel class.
(p) Limb joints must be set at one G, barely restraining the weight
of the limb when it is extended horizontally. The force needed to move a
limb segment shall not exceed 2G throughout the range of limb motion.
(q) Performance tests of the same component, segment, assembly, or
[[Page 93]]
fully assembled dummy shall be separated in time by not less than 30
minutes unless otherwise noted.
(r) Surfaces of dummy components may not be painted except as
specified in this subpart or in drawings subtended by this subpart.
[65 FR 10968, Mar. 1, 2000, as amended at 67 FR 46415, July 15, 2002; 74
FR 29894, June 23, 2009]
[[Page 94]]
Sec. Figures to Subpart O of Part 572
[GRAPHIC] [TIFF OMITTED] TR15JY02.000
[[Page 95]]
[GRAPHIC] [TIFF OMITTED] TR15JY02.001
[[Page 96]]
[GRAPHIC] [TIFF OMITTED] TR15JY02.002
[[Page 97]]
[GRAPHIC] [TIFF OMITTED] TR15JY02.003
[[Page 98]]
[GRAPHIC] [TIFF OMITTED] TR15JY02.004
[65 FR 10968, Mar. 1, 2000, as amended at 67 FR 46415, July 15, 2002]
[[Page 99]]
Subpart P_3-year-Old Child Crash Test Dummy, Alpha Version
Source: 65 FR 15262, Mar. 22, 2000, unless otherwise noted.
Sec.572.140 Incorporation by reference.
(a) The following materials are hereby incorporated in this subpart
P by reference:
(1) A drawings and specifications package entitled, ``Parts List and
Drawings, Subpart P Hybrid III 3-year-old child crash test dummy, (H-
III3C, Alpha version) September 2001,'' incorporated by reference in
Sec.572.141 and consisting of:
(i) Drawing No. 210-1000, Head Assembly, incorporated by reference
in Sec. Sec.572.141, 572.142, 572.144, 572.145, and 572.146;
(ii) Drawing No. 210-2001, Neck Assembly, incorporated by reference
in Sec. Sec.572.141, 572.143, 572.144, 572.145, and 572.146;
(iii) Drawing No. TE-208-000, Headform, incorporated by reference in
Sec. Sec.572.141, and 572.143;
(iv) Drawing No. 210-3000, Upper/Lower Torso Assembly, incorporated
by reference in Sec. Sec.572.141, 572.144, 572.145, and 572.146;
(v) Drawing No. 210-5000-1(L), -2(R), Leg Assembly, incorporated by
reference in Sec. Sec.572.141, 572.144, 572.145 as part of a complete
dummy assembly;
(vi) Drawing No. 210-6000-1(L), -2(R), Arm Assembly, incorporated by
reference in Sec. Sec.572.141, 572.144, and 572.145 as part of the
complete dummy assembly;
(2) A procedures manual entitled ``Procedures for Assembly,
Disassembly and Inspection (PADI), Subpart P, Hybird III 3-year-old
Child Crash Test Dummy, (H-III3C, Alpha Version) September 2001,''
incorporated by reference in Sec.572.141;
(3) SAE Recommended Practice J211/1, Rev. Mar 95 ``Instrumentation
for Impact Tests--Part 1-Electronic Instrumentation'', incorporated by
reference in Sec.572.146;
(4) SAE J1733 1994-12 ``Sign Convention for Vehicle Crash Testing''
incorporated by reference in Sec.572.146.
(5) The Director of the Federal Register approved those materials
incorporated by reference in accordance with 5 U.S.C. 552(a) and 1 CFR
Part 51. Copies of the materials may be inspected at NHTSA's Docket
Section, 400 Seventh Street SW, room 5109, Washington, DC, or at the
National Archives and Records Administration (NARA). For information on
the availability of this material at NARA, call 202-741-6030, or go to:
http://www.archives.gov/federal_register/code_of_federal_regulations/
ibr_locations.html.
(b) The incorporated materials are available as follows:
(1) The drawings and specifications package referred to in paragraph
(a)(1) of this section and the PADI document referred to in paragraph
(a)(2) of this section are accessible for viewing and copying at the
Department of Transportation's Docket public area, Plaza 401, 400
Seventh St., SW., Washington, DC 20590, and downloadable at dms.dot.gov.
They are also available from Reprographic Technologies, 9107 Gaither
Rd., Gaithersburg, MD 20877, (301) 419-5070.
(2) The SAE materials referred to in paragraphs (a)(3) and (a)(4) of
this section are available from the Society of Automotive Engineers,
Inc., 400 Commonwealth Drive, Warrendale, PA 15096.
[65 FR 15262, Mar. 22, 2000, as amended at 66 FR 64376, Dec. 13, 2001]
Sec.572.141 General description.
(a) The Hybrid III 3-year-old child dummy is described by the
following materials:
(1) Technical drawings and specifications package 210-0000 (refer to
Sec.572.140(a)(1)), the titles of which are listed in Table A of this
section;
(2) Procedures for Assembly, Disassembly and Inspection document
(PADI) (refer to Sec.572.140(a)(2)).
(b) The dummy is made up of the component assemblies set out in the
following Table A of this section:
Table A
------------------------------------------------------------------------
Component assembly Drawing No.
------------------------------------------------------------------------
Head Assembly............................ 210-1000
Neck Assembly (complete)................. 210-2001
Upper/Lower Torso Assembly............... 210-3000
Leg Assembly............................. 210-5000-1(L), -2(R)
[[Page 100]]
Arm Assembly............................. 210-6000-1(L), -2(R)
------------------------------------------------------------------------
(c) Adjacent segments are joined in a manner such that except for
contacts existing under static conditions, there is no contact between
metallic elements throughout the range of motion or under simulated
crash impact conditions.
(d) The structural properties of the dummy are such that the dummy
conforms to this part in every respect only before use in any test
similar to those specified in Standard 208, Occupant Crash Protection,
and Standard 213, Child Restraint Systems.
Sec.572.142 Head assembly and test procedure.
(a) The head assembly (refer to Sec.572.140(a)(1)(i)) for this
test consists of the head (drawing 210-1000), adapter plate (drawing ATD
6259), accelerometer mounting block (drawing SA 572-S80), structural
replacement of \1/2\ mass of the neck load transducer (drawing TE-107-
001), head mounting washer (drawing ATD 6262), one \1/2\-20 x
1 flat head cap screw (FHCS) (drawing 9000150), and 3
accelerometers (drawing SA-572-S4).
(b) When the head assembly in paragraph (a) of this section is
dropped from a height of 376.01.0 mm (14.80.04 in) in accordance with paragraph (c) of this
section, the peak resultant acceleration at the location of the
accelerometers at the head CG shall not be less than 250 g or more than
280 g. The resultant acceleration versus time history curve shall be
unimodal, and the oscillations occurring after the main pulse shall be
less than 10 percent of the peak resultant acceleration. The lateral
acceleration shall not exceed 15 G (zero to peak).
(c) Head test procedure. The test procedure for the head is as
follows:
(1) Soak the head assembly in a controlled environment at any
temperature between 18.9 and 25.6 [deg]C (66 and 78 [deg]F) and at any
relative humidity between 10 and 70 percent for at least four hours
prior to a test.
(2) Prior to the test, clean the impact surface of the head skin and
the steel impact plate surface with isopropyl alcohol, trichlorethane,
or an equivalent. Both impact surfaces must be clean and dry for
testing.
(3) Suspend the head assembly with its midsagittal plane in vertical
orientation as shown in Figure P1 of this subpart. The lowest point on
the forehead is 376.0 1.0 mm (14.76 0.04 in) from the steel impact surface. The 3.3 mm (0.13
in) diameter holes, located on either side of the dummy's head in
transverse alignment with the CG, shall be used to ensure that the head
transverse plane is level with respect to the impact surface.
(4) Drop the head assembly from the specified height by a means that
ensures a smooth, instant release onto a rigidly supported flat
horizontal steel plate which is 50.8 mm (2 in) thick and 610 mm (24 in)
square. The impact surface shall be clean, dry and have a finish of not
less than 203.2 x 10-6 mm (8 micro inches) (RMS) and not more
than 2032.0 x 10-6 mm (80 micro inches) (RMS).
(5) Allow at least 2 hours between successive tests on the same
head.
Sec.572.143 Neck-headform assembly and test procedure.
(a) The neck and headform assembly (refer to Sec. Sec.
572.140(a)(1)(ii) and 572.140(a)(1)(iii)) for the purposes of this test,
as shown in Figures P2 and P3 of this subpart, consists of the neck
molded assembly (drawing 210-2015), neck cable (drawing 210-2040), nylon
shoulder bushing (drawing 9001373), upper mount plate insert (drawing
910420-048), bib simulator (drawing TE-208-050), urethane washer
(drawing 210-2050), neck mounting plate (drawing TE-250-021), two jam
nuts (drawing 9001336), load-moment transducer (drawing SA 572-S19), and
headform (drawing TE-208-000).
(b) When the neck and headform assembly, as defined in Sec.
572.143(a), is tested according to the test procedure in paragraph (c)
of this section, it shall have the following characteristics:
(1) Flexion.
[[Page 101]]
(i) Plane D, referenced in Figure P2 of this subpart, shall rotate
in the direction of preimpact flight with respect to the pendulum's
longitudinal centerline between 70 degrees and 82 degrees. Within this
specified rotation corridor, the peak moment about the occipital condyle
may not be less than 42 N-m and not more than 53 N-m.
(ii) The positive moment shall decay for the first time to 10 N-m
between 60 ms and 80 ms after time zero.
(iii) The moment and rotation data channels are defined to be zero
when the longitudinal centerline of the neck and pendulum are parallel.
(2) Extension.
(i) Plane D referenced in Figure P3 of this subpart shall rotate in
the direction of preimpact flight with respect to the pendulum's
longitudinal centerline between 83 degrees and 93 degrees. Within this
specified rotation corridor, the peak moment about the occipital condyle
may be not more than -43.7 N-m and not less than -53.3 N-m.
(ii) The negative moment shall decay for the first time to -10 N-m
between 60 and 80 ms after time zero.
(iii) The moment and rotation data channels are defined to be zero
when the longitudinal centerline of the neck and pendulum are parallel.
(c) Test procedure. (1) Soak the neck assembly in a controlled
environment at any temperature between 20.6 and 22.2 [deg]C (69 and 72
F) and a relative humidity between 10 and 70 percent for at least four
hours prior to a test.
(2) Torque the jam nut (drawing 9001336) on the neck cable (drawing
210-2040) between 0.2 N-m and 0.3 N-m.
(3) Mount the neck-headform assembly, defined in paragraph (a) of
this section, on the pendulum so the midsagittal plane of the headform
is vertical and coincides with the plane of motion of the pendulum as
shown in Figure P2 of this subpart for flexion and Figure P3 of this
subpart for extension tests.
(4) Release the pendulum and allow it to fall freely to achieve an
impact velocity of 5.50 0.10 m/s (18.05 + 0.40 ft/
s) for flexion and 3.65 0.1 m/s (11.98 0.40 ft/s) for extension tests, measured by an
accelerometer mounted on the pendulum as shown in Figure 22 of this part
572 at time zero.
(i) The test shall be conducted without inducing any torsion
twisting of the neck.
(ii) Stop the pendulum from the initial velocity with an
acceleration vs. time pulse which meets the velocity change as specified
in Table B of this section. Integrate the pendulum acceleration data
channel to obtain the velocity vs. time curve as indicated in Table B of
this section.
(iii) Time-zero is defined as the time of initial contact between
the pendulum striker plate and the honeycomb material. The pendulum data
channel shall be zero at this time.
Table B--Pendulum Pulse
----------------------------------------------------------------------------------------------------------------
Time Flexion Time Extension
----------------------------------------------------------------------------------------------------------------
ms m/s ft/s ms m/s ft/s
----------------------------------------------------------------------------------------------------------------
10............................................. 2.0-2.7 6.6-8.9 6 1.0-1.4 3.3-4.6
15............................................. 3.0-4.0 9.8-13.1 10 1.9-2.5 6.2-8.2
20............................................. 4.0-5.1 13.1-16.7 14 2.8-3.5 9.2-11.5
----------------------------------------------------------------------------------------------------------------
Sec.572.144 Thorax assembly and test procedure.
(a) Thorax (upper torso) assembly (refer to Sec.
572.140(a)(1)(iv)). The thorax consists of the upper part of the torso
assembly shown in drawing 210-3000.
(b) When the anterior surface of the thorax of a completely
assembled dummy (drawing 210-0000) is impacted by a test probe
conforming to Sec.572.146(a) at 6.0 0.1 m/s
(19.7 0.3 ft/s) according to the test procedure in
paragraph (c) of this section.
(1) Maximum sternum displacement (compression) relative to the
spine, measured with the chest deflection transducer (SA-572-S50), must
not be less than 32mm (1.3 in) and not more than 38mm (1.5 in). Within
this specified compression corridor, the peak force, measured by the
probe-mounted
[[Page 102]]
accelerometer as defined in Sec.572.146(a) and calculated in
accordance with paragraph (b)(3) of this section, shall be not less than
680 N and not more than 810 N. The peak force after 12.5 mm of sternum
compression but before reaching the minimum required 32.0 mm sternum
compression shall not exceed 910 N.
(2) The internal hysteresis of the ribcage in each impact, as
determined from the force vs. deflection curve, shall be not less than
65 percent and not more than 85 percent. The hysteresis shall be
calculated by determining the ratio of the area between the loading and
unloading portions of the force deflection curve to the area under the
loading portion of the curve.
(3) The force shall be calculated by the product of the impactor
mass and its deceleration.
(c) Test procedure. The test procedure for the thorax assembly is as
follows:
(1) The test dummy is clothed in cotton-polyester-based tight-
fitting shirt with long sleeves and ankle-length pants whose combined
weight is not more than 0.25 kg (0.55 lbs).
(2) Soak the dummy in a controlled environment at any temperature
between 20.6 and 22.2 [deg]C (69 and 72 [deg]F) and at any relative
humidity between 10 and 70 percent for at least four hours prior to a
test.
(3) Seat and orient the dummy on a seating surface without back
support as shown in Figure P4, with the lower limbs extended
horizontally and forward, the upper arms parallel to the torso and the
lower arms extended horizontally and forward, parallel to the
midsagittal plane, the midsagittal plane being vertical within 1 degree and the ribs level in the anterior-posterior
and lateral directions within 0.5 degrees.
(4) Establish the impact point at the chest midsagittal plane so
that the impact point of the longitudinal centerline of the probe
coincides with the dummy's mid-sagittal plane and is centered on the
center of No. 2 rib within 2.5 mm (0.1 in.) and
0.5 degrees of a horizontal plane.
(5) Impact the thorax with the test probe so that at the moment of
contact the probe's longitudinal center line is within 2 degrees of a
horizontal line in the dummy's midsagittal plane.
(6) Guide the test probe during impact so that there is no
significant lateral, vertical or rotational movement.
(7) No suspension hardware, suspension cables, or any other
attachments to the probe, including the velocity vane, shall make
contact with the dummy during the test.
[65 FR 15262, Mar. 22, 2000, as amended at 66 FR 64376, Dec. 13, 2001]
Sec.572.145 Upper and lower torso assemblies and torso flexion test
procedure.
(a) The test objective is to determine the resistance of the lumbar
spine and abdomen of a fully assembled dummy (drawing 210-0000) to
flexion articulation between upper and lower halves of the torso
assembly (refer to Sec.572.140(a)(1)(iv)).
(b)(1) When the upper half of the torso assembly of a seated dummy
is subjected to a force continuously applied at the occipital condyle
level through the rigidly attached adaptor bracket in accordance with
the test procedure set out in paragraph (c) of this section, the lumbar
spine-abdomen assembly shall flex by an amount that permits the upper
half of the torso, as measured at the posterior surface of the torso
reference plane shown in Figure P5 of this subpart, to translate in
angular motion in the midsagittal plane 45 0.5
degrees relative to the vertical transverse plane, at which time the
pulling force applied must not be less than 130 N (28.8 lbf) and not
more than 180 N (41.2 lbf), and
(2) Upon removal of the force, the upper torso assembly returns to
within 10 degrees of its initial position.
(c) Test procedure. The test procedure is as follows:
(1) Soak the dummy in a controlled environment at any temperature
between 18.9[deg] and 25.6 [deg]C (66 and 78 [deg]F) and at any relative
humidity between 10 and 70 percent for at least 4 hours prior to a test.
(2) Assemble the complete dummy (with or without the lower legs) and
seat it on a rigid flat-surface table, as shown in Figure P5 of this
subpart.
(i) Unzip the torso jacket and remove the four \1/4\-20 x \3/
4\ bolts which attach
[[Page 103]]
the lumbar load transducer or its structural replacement to the pelvis
weldment (drawing 210-4510) as shown in Figure P5 of this subpart.
(ii) Position the matching end of the rigid pelvis attachment
fixture around the lumbar spine and align it over the four bolt holes.
(iii) Secure the fixture to the dummy with the four \1/4\-20 x \3/
4\ bolts and attach the fixture to the table. Tighten the
mountings so that the pelvis-lumbar joining surface is horizontal within
1 deg and the buttocks and upper legs of the
seated dummy are in contact with the test surface.
(iv) Attach the loading adapter bracket to the upper part of the
torso as shown in Figure P5 of this subpart and zip up the torso jacket.
(v) Point the upper arms vertically downward and the lower arms
forward.
(3)(i) Flex the thorax forward three times from vertical until the
torso reference plane reaches 30 2 degrees from
vertical. The torso reference plane, as shown in figure P5 of this
subpart, is defined by the transverse plane tangent to the posterior
surface of the upper backplate of the spine box weldment (drawing 210-
8020).
(ii) Remove all externally applied flexion forces and support the
upper torso half in a vertical orientation for 30 minutes to prevent it
from drooping.
(4) Remove the external support and after two minutes measure the
initial orientation angle of the upper torso reference plane of the
seated, unsupported dummy as shown in Figure P5 of this subpart. The
initial orientation of the torso reference plane may not exceed 15
degrees.
(5) Attach the pull cable at the point of load application on the
adaptor bracket while maintaining the initial torso orientation. Apply a
pulling force in the midsagittal plane, as shown in Figure P5 of this
subpart, at any upper torso flexion rate between 0.5 and 1.5 degrees per
second, until the torso reference plane reaches 45 0.5 degrees of flexion relative to the vertical
transverse plane.
(6) Continue to apply a force sufficient to maintain 45 0.5 degrees of flexion for 10 seconds, and record the
highest applied force during the 10-second period.
(7) [Reserved]
(8) Release all force at the loading adaptor bracket as rapidly as
possible and measure the return angle with respect to the initial angle
reference plane as defined in paragraph (c)(4) of this section 3 to 4
minutes after the release.
Sec.572.146 Test conditions and instrumentation.
(a) The test probe for thoracic impacts, except for attachments,
shall be of rigid metallic construction and concentric about its
longitudinal axis. Any attachments to the impactor such as suspension
hardware, and impact vanes, must meet the requirements of Sec.
572.144(c)(7) of this part. The impactor shall have a mass of 1.70
0.02 kg (3.75 0.05 lb) and a
minimum mass moment of inertia 164 kg-cm\2\ (0.145 lb-in-sec\2\) in yaw
and pitch about the CG of the probe. One-third (\1/3\) of the weight of
suspension cables and any attachments to the impact probe must be
included in the calculation of mass, and such components may not exceed
five percent of the total weight of the test probe. The impacting end of
the probe, perpendicular to and concentric with the longitudinal axis of
the probe, has a flat, continuous, and non-deformable 50.8 0.25 mm (2.00 0.01 inch) diameter
face with an edge radius of 7.6/12.7 mm (0.3/0.5 in). The impactor shall
have a 53.3 mm (2.1 in) dia. cylindrical surface extending for a minimum
of 25.4 mm (1.0 in) to the rear from the impact face. The probe's end
opposite to the impact face has provisions for mounting an accelerometer
with its sensitive axis collinear with the longitudinal axis of the
probe. The impact probe has a free air resonant frequency not less than
1000 Hz limited to the direction of the longitudinal axis of the
impactor.
(b) Head accelerometers shall have the dimensions, response
characteristics, and sensitive mass locations specified in drawing SA
572-S4 and be mounted in the head as shown in drawing 210-0000.
(c) The neck force-moment transducer shall have the dimensions,
response characteristics, and sensitive axis locations specified in
drawing SA 572-S19 and be mounted at the upper neck transducer location
as shown in
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drawing 210-0000. A lower neck transducer as specified in drawing SA
572-S19 is allowed to be mounted as optional instrumentation in place of
part No. ATD6204, as shown in drawing 210-0000.
(d) The shoulder force transducers shall have the dimensions and
response characteristics specified in drawing SA 572-S21 and be allowed
to be mounted as optional instrumentation in place of part No. 210-3800
in the torso assembly as shown in drawing 210-0000.
(e) The thorax accelerometers shall have the dimensions, response
characteristics, and sensitive mass locations specified in drawing SA
572-S4 and be mounted in the torso assembly in triaxial configuration at
the T4 location, as shown in drawing 210-0000. Triaxial accelerometers
may be mounted as optional instrumentation at T1, and T12, and in
uniaxial configuration on the sternum at the midpoint level of ribs No.
1 and No. 3 and on the spine coinciding with the midpoint level of No. 3
rib, as shown in drawing 210-0000. If used, the accelerometers must
conform to SA-572-S4.
(f) The chest deflection potentiometer shall have the dimensions and
response characteristics specified in drawing SA-572-S50 and be mounted
in the torso assembly as shown drawing 210-0000.
(g) The lumbar spine force/moment transducer may be mounted in the
torso assembly as shown in drawing 210-0000 as optional instrumentation
in place of part No. 210-4150. If used, the transducer shall have the
dimensions and response characteristics specified in drawing SA-572-S20.
(h) The pubic force transducer may be mounted in the torso assembly
as shown in drawing 210-0000 as optional instrumentation in place of
part No. 921-0022-036. If used, the transducer shall have the dimensions
and response characteristics specified in drawing SA-572-S18.
(i) The acetabulum force transducers may be mounted in the torso
assembly as shown in drawing 210-0000 as optional instrumentation in
place of part No. 210-4522. If used, the transducer shall have the
dimensions and response characteristics specified in drawing SA-572-S22.
(j) The anterior-superior iliac spine transducers may be mounted in
the torso assembly as shown in drawing 210-0000 as optional
instrumentation in place of part No. 210-4540-1, -2. If used, the
transducers shall have the dimensions and response characteristics
specified in drawing SA-572-S17.
(k) The pelvis accelerometers may be mounted in the pelvis in
triaxial configuration as shown in drawing 210-0000 as optional
instrumentation. If used, the accelerometers shall have the dimensions
and response characteristics specified in drawing SA-572-S4.
(l) The outputs of acceleration and force-sensing devices installed
in the dummy and in the test apparatus specified by this part shall be
recorded in individual data channels that conform to the requirements of
SAE Recommended Practice J211/1, Rev. Mar 95 ``Instrumentation for
Impact Tests--Part 1-Electronic Instrumentation'' (refer to Sec.
572.140(a)(3)), with channel classes as follows:
(1) Head acceleration--Class 1000
(2) Neck
(i) Force--Class 1000
(ii) Moments--Class 600
(iii) Pendulum acceleration--Class 180
(iv) Rotation potentiometer response (if used)--CFC 60.
(3) Thorax:
(i) Rib/sternum acceleration--Class 1000
(ii) Spine and pendulum accelerations--Class 180
(iii) Sternum deflection--Class 600
(iv) Shoulder force--Class 180
(4) Lumbar:
(i) Forces--Class 1000
(ii) Moments--Class 600
(iii) Torso flexion pulling force--Class 60 if data channel is used
(5) Pelvis
(i) Accelerations--Class 1000
(ii) Acetabulum, pubic symphysis--Class 1000,
(iii) Iliac wing forces--Class 180
(m) Coordinate signs for instrumentation polarity shall conform to
the Sign Convention For Vehicle Crash Testing, Surface Vehicle
Information Report, SAE J1733, 1994-12 (refer to Sec.572.140(a)(4)).
(n) The mountings for sensing devices shall have no resonance
frequency less
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than 3 times the frequency range of the applicable channel class.
(o) Limb joints shall be set at lG, barely restraining the weight of
the limbs when they are extended horizontally. The force required to
move a limb segment shall not exceed 2G throughout the range of limb
motion.
(p) Performance tests of the same component, segment, assembly, or
fully assembled dummy shall be separated in time by a period of not less
than 30 minutes unless otherwise noted.
(q) Surfaces of dummy components are not painted except as specified
in this part or in drawings subtended by this part.
Sec. Figures to Subpart P of Part 572
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[GRAPHIC] [TIFF OMITTED] TR22MR00.000
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[GRAPHIC] [TIFF OMITTED] TR22MR00.001
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[GRAPHIC] [TIFF OMITTED] TR22MR00.002
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[GRAPHIC] [TIFF OMITTED] TR13DE01.237
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[GRAPHIC] [TIFF OMITTED] TR22MR00.004
[65 FR 15262, Mar. 22, 2000, as amended at 66 FR 64376, Dec. 13, 2001]
[[Page 111]]
Subpart R_CRABI 12-Month-Old Infant, Alpha Version
Source: 65 FR 17188, Mar. 31, 2000, unless otherwise noted.
Sec.572.150 Incorporation by reference.
(a) The following materials are incorporated by reference in this
subpart R.
(1) A drawings and specifications package entitled ``Parts List and
Drawings, Subpart R, CRABI 12-Month-Old Infant Crash Test Dummy (CRABI-
12, Alpha version) August 2001'' and consisting of:
(i) Drawing No. 921022-001, Head Assembly, incorporated by reference
in Sec. Sec.572.151, 572.152, 572.154, and 572.155;
(ii) Drawing No. 921022-041, Neck Assembly, incorporated by
reference in Sec. Sec.572.151, 572.153, 572.154, and 572.155;
(iii) Drawing No. TE-3200-160, Headform, incorporated by reference
in Sec. Sec.572.151 and 572.153;
(iv) Drawing No. 921022-060, Torso Assembly, incorporated by
reference in Sec. Sec.572.151, 572.154, and 572.155;
(v) Drawing No. 921022-055, Leg Assembly, incorporated by reference
in Sec. Sec.572.151, and 572.155 as part of a complete dummy assembly;
(vi) Drawing No. 921022-054, Arm Assembly, incorporated by reference
in Sec. Sec.572.151, and 572.155 as part of the complete dummy
assembly;
(2) A procedures manual entitled ``Procedures for Assembly,
Disassembly and Inspection (PADI) Subpart R, CRABI 12-Month-Old Infant
Crash Test Dummy (CRABI-12, Alpha version) August 2001'' incorporated by
reference in Sec.572.155;
(3) SAE Recommended Practice J211/1, Rev. Mar95 ``Instrumentation
for Impact Tests--Part 1--Electronic Instrumentation'', incorporated by
reference in Sec.572.155;
(4) SAE J1733 1994-12 ``Sign Convention for Vehicle Crash Testing'',
incorporated by reference in Sec.572.155.
(b) The Director of the Federal Register approved those materials
incorporated by reference in accordance with 5 U.S.C. 552(a) and 1 CFR
part 51. Copies of the materials may be inspected at NHTSA's Docket
Section, 400 Seventh Street S.W., room 5109, Washington, DC, or at the
National Archives and Records Administration (NARA). For information on
the availability of this material at NARA, call 202-741-6030, or go to:
http://www.archives.gov/federal_register/code_of_federal_regulations/
ibr_locations.html.
(c) The incorporated materials are available as follows:
(1) The drawings and specifications package referred to in paragraph
(a)(1) of this section and the procedures manual referred to in
paragraph (a)(2) of this section are available from Reprographic
Technologies, 9000 Virginia Manor Road, Beltsville, MD 20705 (301) 419-
5070.
(2) The SAE materials referred to paragraphs (a)(3) and (a)(4) of
this section are available from the Society of Automotive Engineers,
Inc., 400 Commonwealth Drive, Warrendale, PA 15096.
[65 FR 17188, Mar. 31, 2000, as amended at 66 FR 45784, Aug. 30, 2001]
Sec.572.151 General description.
(a) The 12-month-old-infant crash test dummy is described by
drawings and specifications containing the following materials:
(1) Technical drawings and specifications package 921022-000 (refer
to Sec.572.150(a)(1)), the titles of which are listed in Table A of
this section;
(2) Procedures for Assembly, Disassembly and Inspection document
(PADI) (refer to Sec.572.150(a)(2)).
(b) The dummy consists of the component assemblies set out in the
following Table A:
Table A
------------------------------------------------------------------------
Component assembly Drawing number
------------------------------------------------------------------------
Head Assembly............................. 921022-001.
Neck Assembly (complete).................. 921022-041.
Torso Assembly............................ 921022-060.
Leg Assembly.............................. 921022-055 R&L.
Arm Assembly.............................. 921022-054 R&L.
------------------------------------------------------------------------
(c) Adjacent segments of the dummy are joined in a manner such that,
except for contacts existing under static conditions, there is no
contact between metallic elements throughout the range of motion or
under simulated crash impact conditions.
(d) The structural properties of the dummy are such that the dummy
shall
[[Page 112]]
conform to this Subpart in every respect before its use in any test
under this chapter.
Sec.572.152 Head assembly and test procedure.
(a) The head assembly (refer to Sec.572.150(a)(1)(i)) for this
test consists of the assembly (drawing 921022-001), triaxial mount block
(SA572-80), and 3 accelerometers (drawing SA572-S4).
(b) Frontal and rear impact. (1) Frontal impact. When the head
assembly in paragraph (a) of this section is dropped from a height of
376.0