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Revised: October 2001
Issued: October 1997
Disclaimer
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prepared for use as a ready reference and do not have legal force or effect.
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TABLE OF CONTENTS
3.1 Test Acceleration
3.2 Test Conditions
3.3 Pre-Test Buckle Release Force Measurement
3.4 Positioning of the ATD and Installation of the Restraint
System for the Dynamic Test Using the Seat Belt Assembly
3.5 Test Procedure
3.6 Positioning of the ATD and Installation of the Restraint
System for the Dynamic Test Using the Lower Universal Anchorage System
3.7 Test Procedure
3.8 Infant Restraint Systems with a Separate Base
TABLE OF FIGURES
LIST OF REFERENCED DOCUMENTS
Drawing Package NHTSA SAS-100-1000
Society of Automotive Engineers Recommended Practice J211, Instrumentation
for Impact Tests (October 1988)
Code of Federal Regulations (October 1, 1996), Title 49, Part
572, Subparts D, J, and K
American Society for Testing and Materials:
Standard Specification for Flexible Cellular MaterialsSponge
or Expanded Rubber, Designation No. D 1056-91
Standard Specification for Flexible Cellular MaterialsVinyl
Chloride Polymers and Copolymers (Open-Cell Foam), Designation No.
D 1565-81 (Reapproved 1990)
Standard Test Methods for Flexible Cellular MaterialsSlab, Bonded,
and Molded Urethane Foams, Designation No. D 3574-95
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![](/web/20071219024416im_/http://www.tc.gc.ca/images/line.gif)
2.
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Test Devices to be Used for the Dynamic Test and the Buckle Release
Test
2.1 The seat to be used for the dynamic test prescribed in this
test method is the standard seat assembly, as described in Drawing Package
NHTSA SAS-100-1000 and shown in Figure 1(a),
which indicates the location of the seat belt anchorage points, and Figure
1(b), which indicates the location of the lower universal anchorage
system, mounted on a dynamic test platform so that the Seat Orientation
Reference Line (SORL) is parallel to the direction of travel of the test
platform and so that movement between the base of the assembly and the
platform is prevented.
2.2 The test platform must be instrumented with an accelerometer
that is linked to a data processing system, and the accelerometer-sensitive
axis must be parallel to the direction of travel of the test platform.
The data must be filtered with a Class 60 filter, as specified in the
Society of Automotive Engineers Recommended Practice (SAE) J211, Instrumentation
for Impact Tests (October 1988).
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![Figure 1(a) — Three-dimensional Schematic View and Side View of the Standard Seat](/web/20071219024416im_/http://www.tc.gc.ca/roadsafety/mvstm_tsd/images/213,2131,2133,2135_Fig_Location_Seat_Belt_Anchorage_Points_Eng.gif)
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Notes:
1. Dimensions are in mm, except where otherwise indicated.
2. Drawings are not to scale.
3. Lap belt anchorage points are symmetrically located with respect to
the centre SORL.
4. Maximum distance from the seat bight to the end of the buckle is 175
mm.
5. Outboard anchorage point is located 700 mm from the centre SORL.
6. Anchorage point on the rear package shelf is located on the vertical
longitudinal plane containing the centre SORL.
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Figure 1(a) Three-dimensional Schematic View and
Side View of the Standard Seat Assembly Indicating the Location of the Seat
Belt Anchorage Points
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Notes:
1. Dimensions are in mm, except where otherwise indicated.
2. Drawings are not to scale.
3. Lower universal anchorage system bars are 6 mm in diameter and 25 mm
in length.
4. Transverse horizontal distance between the centre of the bars and the
vertical plane containing the SORL at the centre of the seat assembly
is 140 mm.
5. Anchorage point on the rear package shelf is located on the vertical
longitudinal plane containing the centre SORL.
6. Head excursion limit is 720 mm.
7. Lower universal anchorage system bars are located 102 mm forward of
Z Point and 323 mm above the floor.
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Figure 1(b) Three-dimensional Schematic View and
Side View of the Standard Seat Assembly Indicating the Location of the Lower
Universal Anchorage System
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2.3 A Type 1 seat belt assembly that meets the requirements of
section
209 of the Motor Vehicle Safety Regulations and whose webbing
is not more than 50 mm wide must be attached, without the use of retractors
or reels of any kind, to the seat belt anchorage points provided on the
standard seat assembly.
2.4 Two dynamic tests must be performed using
the following anthropomorphic test devices (ATD):
(a) The ATD used in one of the tests must be an
unclothed ATD that represents a premature infant, referred to as a "Premie",
that has the following characteristics:
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Height |
477 mm |
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Mass |
2.041 kg |
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Head circumference |
330 mm |
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Top of head to shoulder |
147 mm |
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Neck circumference |
152 mm |
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Shoulders to heels |
330 mm |
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Chest circumference |
330 mm |
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Waist circumference |
330 mm |
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Upper arm circumference |
102 mm |
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Lower arm circumference |
76 mm |
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Leg at hip circumference |
137 mm |
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Leg at knee circumference |
102 mm |
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Leg at ankle circumference |
79 mm |
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Arm length (arm to tip of hand) |
135 mm |
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Leg length (crotch to heel) |
152 mm |
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Under foot length |
41 mm |
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Centre of gravity |
59% of height from under foot |
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Covering material |
lightweight soft 100% cotton denim 198
to 283 g/m² |
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Filling |
polyurethane batting |
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Ballast weights |
lead sinker fishing weights covered in
plastic to prevent shifting |
(b) The ATD used in the other test must be one
of the following:
(i) if the restraint system is recommended for use by an infant with
a mass no greater than 5 kg, an unclothed newborn infant ATD that
conforms to the requirements of the U.S. Code of Federal Regulations
(October 1, 1996), Title 49, Part 572, Subpart K;
(ii) if the restraint system is recommended for use by an infant
with a mass no greater than 7.7 kg, an unclothed 6-month-old infant
ATD that conforms to the requirements of the U.S. Code of Federal
Regulations (October 1, 1996), Title 49, Part 572, Subpart D;
or
(iii) if the restraint system is recommended for use by an infant
with a mass no greater than 10 kg, an unclothed 9-month-old infant
ATD that conforms to the requirements of the U.S. Code of Federal
Regulations (October 1, 1996), Title 49, Part 572, Subpart J.
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3.
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Dynamic Tests
A first dynamic test is to be conducted in accordance with the procedure
set out in subsections 3.4 and 3.5
using a new production restraint system for infants with special needs
that is attached to the standard seat assembly as shown in Figure
1(a) by the seat belt assembly and a tether strap, if one is provided
with the system.
If the restraint system is equipped with a lower connector system, a
second dynamic test is to be conducted in accordance with the procedure
set out in subsections 3.6 and 3.7
using a new production restraint system for infants with special needs
that is attached to the standard seat assembly as shown in Figure
1(b) by the lower universal anchorage system and a tether strap, if
one is provided with the system.
3.1 Test Acceleration
The dynamic tests simulate a frontal impact at 48 km/hr. At all points
in time until 48 milliseconds after the start of the pulse, the acceleration
of the test platform must be above that indicated by the line shown in
Figure 2 and such that the total change of
velocity is at least 48 km/h.
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Figure 2 Test Platform Acceleration Graph
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3.2 Test Conditions
For the dynamic tests, the ambient temperature must be from 19°C
to 26°C and the relative humidity from 10% to 70%.
3.3 Pre-Test Buckle Release Force
Measurement
If the belts of the restraint system are equipped with buckles, the
release force of each buckle is to be measured in the following manner
before commencing the dynamic tests.
3.3.1 Place the buckle assembly on a hard, level surface.
3.3.2 Apply a pullout force of 9 N to the
buckle assembly in a direction that will produce maximum releasing effect,
in the case of
(a) A push-button-actuated buckle, at least 3.2 mm from the edge
of the push-button access opening of the buckle, or
(b) A lever-actuated buckle, on the centreline of the buckle lever
or finger tab.
3.3.3 Measure the force required to release
the buckle and determine its conformance to the requirements of Schedule
7 to the RSSRs.
3.4 Positioning of the ATD and Installation
of the Restraint System for the Dynamic Test Using the Seat Belt Assembly
3.4.1 In accordance with the manufacturer's instructions, place
a new restraint system for infants with special needs at the centre
seating position of the standard seat assembly. If the restraint system
is installed by passing the motor vehicle seat belt over the system
and under the ATD, attach the seat belt to the restraint system, but
do not tighten it.
3.4.2 For the first test, position the Premie
ATD specified in paragraph 2.4(a) according to
the manufacturer's instructions and as follows:
(a) With the ATD supine on a horizontal surface, and with a hand
placed on its torso to prevent it from moving, lift the feet of the
ATD until the legs touch the upper torso and the feet touch the head
or as far as they will go. Slowly release the legs, allowing them
to come to rest of their own accord. Do not return them to the flat
surface.
(b) Place the ATD in the restraint system so that its back is in
contact with the back support of the system. Attach the belts and
the upper and lower torso restraints of the system.
(c) Tighten the belts and upper and lower torso restraints until
a 9-N force applied using a webbing tension pull device (as illustrated
in Figure 3) to the webbing at the top
of each shoulder and, if applicable, to the pelvic webbing 50 mm on
either side of the mid-sagittal plane of the torso pulls the webbing
a distance of 7 mm away from the ATD.
(d) Rotate each limb of the ATD downward in a plane parallel to its
mid-sagittal plane until the limb is in contact with a surface of
the restraint system or the standard seat assembly. The movement of
the arms must not be restricted in any but the downward direction.
3.4.3 In accordance with the manufacturer's instructions, attach
the restraint system, if it is not already installed, to the standard
seat assembly using the motor vehicle seat belt; attach the tether strap,
if one has been provided; and tighten the seat belt and tether strap
to a tension, as measured by a force gauge used on the webbing, of
(a) until August 31, 2002, not less than 31 N and not more than 49
N or, at the option of the manufacturer, not less than 53.5 N and
not more that 67 N; and
(b) on or after September 1, 2002, not less than 53.5 N and not more
than 67 N.
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Figure 3 Webbing Tension Pull Device
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3.5 Test Procedure
3.5.1 Accelerate the test platform in accordance with the requirements
of subsection 3.1.
3.5.2 For restraint systems that are not car beds, measure the
angle of the seat back and, for both types of systems, determine the
conformance of the restraint system to the requirements of section
9 of Schedule 7 to the RSSRs.
3.5.3 Depending on the mass range for which the restraint system
is designed, the dynamic test procedure must be repeated with a new
restraint system and in accordance with the requirements of section
3 using a newborn infant, a 6-month-old infant, or a 9-month-old infant
ATD, as specified in paragraph 2.4(b).
3.6 Positioning of the ATD and Installation
of the Restraint System for the Dynamic Test Using the Lower Universal
Anchorage System
3.6.1 Place a new restraint system for infants with special
needs at the centre seating position of the standard seat assembly in
accordance with the manufacturer's instructions.
3.6.2 For the first test, position the Premie ATD specified
in paragraph 2.4(a) according to the manufacturer's
instructions and as follows:
(a) With the ATD supine on a horizontal surface, and with a hand
placed on its torso to prevent it from moving, lift the feet of the
ATD until the legs touch the upper torso and the feet touch the head
or as far as they will go. Slowly release the legs, allowing them
to come to rest of their own accord. Do not return them to the flat
surface.
(b) Place the ATD in the restraint system so that its back is in
contact with the back support of the system. Attach the belts and
the upper and lower torso restraints of the system.
(c) Tighten the belts and upper and lower torso restraints until
a 9-N force applied using a webbing tension pull device (as illustrated
in Figure 4) to the webbing at the top of each
shoulder and, if applicable, to the pelvic webbing 50 mm on either
side of the mid-sagittal plane of the torso pulls the webbing a distance
of 7 mm away from the ATD.
(d) Rotate each limb of the ATD downward in a plane parallel to its
mid-sagittal plane until the limb is in contact with a surface of
the restraint system or the standard seat assembly. The movement of
the arms must not be restricted in any but the downward direction.
3.6.3 Attach the lower connectors of the restraint system to
the lower universal anchorage system and the tether strap, if one has
been provided, to the standard seat assembly in the following manner:
(a) Adjust rigid lower connectors in accordance with the manufacturer's
instructions;
(b) If a tether strap has been provided, tighten it to a tension
of not less than 53.5 N and not more than 67 N, as measured by a force
gauge used on the webbing.
3.7 Test Procedure
3.7.1 Accelerate the test platform in accordance with the requirements
of subsection 3.1.
3.7.2 For restraint systems that are not car beds, measure the
angle of the seat back and, for both types of systems, determine the
conformance of the restraint system to the requirements of section
9 of Schedule 7 to the RSSRs.
3.7.3 Depending on the mass range for which the restraint system
is designed, the dynamic test procedure must be repeated with a new
restraint system and in accordance with the requirements of section
3 using a newborn infant, a 6-month-old infant, or a 9-month-old infant
ATD, as specified in paragraph 2.4(b).
3.8 Infant Restraint Systems with
a Separate Base
In the case of a system that has a separate, removable base, the seating
component of which may be used without the base,
(a) Where lower connectors are supplied on the base only, the tests
described in subsections 3.4 and 3.5
are to be conducted for the seating component and the tests described
in subsections 3.4 to 3.7 are to be conducted for the base;
(b) Where lower connectors are supplied on both the base and the
seating component, the tests described in subsections 3.4 to 3.7 are
to be conducted for both the base and the seating component.
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4.
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Buckle Release Test Procedure
4.1 The release force of each buckle
is to be tested with the ATD retained in the restraint system and the
system installed in a forward-facing direction. Depending on the mass
range for which the restraint system is designed, a newborn infant,
a 6-month-old infant, or a 9-month-old infant ATD, as specified in paragraph
2.4(b), must be positioned in the system in accordance
with the manufacturer's instructions and the requirements of subsection
3.4.2.
4.2 The buckle release force is to be tested as follows:
(a) For systems that are not car beds, tie a self-adjusting sling
to the wrists and ankles of the ATD, as illustrated in Figure
4. For car beds, use the self-adjusting sling illustrated in Figure
5.
(b) While applying a pullout force of 9 N to the buckle assembly
in a direction that will produce maximum releasing effect, pull the
sling horizontally and parallel to the SORL of the standard seat assembly
with a force of 90 N if the system is not a car bed. For car beds,
pull the sling vertically with a force of 90 N.
Note: If the restraint system is equipped with a T-shield, a force
equivalent to its mass must be added to the pullout force. Any shield,
if present, may be adjusted to facilitate application of the pullout
force, provided that the harness tension is not significantly affected.
(c) In order to determine the buckle's conformance to the requirements
of section
7 of Schedule 7 to the RSSRs, apply the specified force in a direction
that will produce maximum releasing effect, in the case of
(i) A push-button-actuated buckle, at least 3.2 mm from the edge
of the push-button access opening, or
(ii) A lever-actuated buckle, on the centreline of the buckle lever
or finger tab.
(d) If the force required to release the buckle exceeds the requirements
of Schedule
7 to the RSSRs, release the harness tension and apply a force of
22 to 44 N to the lowest accessible part of the tongue 2 to 4 times
in each of four directions at 90-degree angles to each other.
(e) Repeat paragraphs (b) and (c) above while applying a pullout
force on the buckle assembly of 22 N, re-orienting the direction of
the sling pull force if necessary so that the arms of the ATD do not
load the shield.
(f) If the buckle does not release at the force specified in Schedule
7 to the RSSRs, repeat paragraphs (b) and (c) once again using a
pullout force of 44 N.
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Figure 4 Self-Adjusting Sling for the Buckle Release Test for Restraint
Systems that Are Not Car Beds
![Figure 5 — Self-Adjusting Sling for the Buckle Release Test for Car Beds](/web/20071219024416im_/http://www.tc.gc.ca/roadsafety/mvstm_tsd/images/2135_Fig_Self-Adjusting_Sling_for_Car_Beds_Eng.gif)
Figure 5 Self-Adjusting Sling for the Buckle Release
Test for Car Beds
5.
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Energy Absorbing Material Test Procedure
5.1 Prepare and test specimens of energy absorbing material
in accordance with the applicable 25% compression-deflection test described
in one of the following American Society for Testing and Materials (ASTM)
Standards:
- Standard Specification for Flexible Cellular MaterialsSponge
or Expanded Rubber, Designation No. D 1056-91;
- Standard Specification for Flexible Cellular MaterialsVinyl
Chloride Polymers and Copolymers (Open-Cell Foam), Designation
No. D 1565-81 (Reapproved 1990); or
- Standard Test Methods for Flexible Cellular MaterialsSlab,
Bonded, and Molded Urethane Foams, Designation No. D 3574-95.
5.2 Determine the conformance of the test specimens to the requirements
of section
5 of Schedule 7 to the RSSRs. |
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