ASTM D5428-08
(Practice)Standard Practice for Evaluating the Performance of Inflatable Restraint Modules
Standard Practice for Evaluating the Performance of Inflatable Restraint Modules
SIGNIFICANCE AND USE
This practice is intended to be a general guideline for repetitive testing, safe conduct of tests, and accurate data collection for inflatable restraints.
This practice may be used by the purchaser and the supplier to establish the criteria by which inflatable restraint modules will be tested by the supplier to determine whether a lot of material is acceptable for shipment to the purchaser.
Unless otherwise specified by agreement between the purchaser and the supplier, this practice shall constitute the test conditions, procedures, and equipment by which inflatable restraint modules are deployed for testing. It is intended to be used as a guideline in establishing a written material specification or equivalent agreement between the purchaser and the supplier. The specification may deviate from the practices described herein when (based on experience) considerations of fabric properties, material handling equipment, or inflatable restraint system design dictate otherwise.
SCOPE
1.1 This practice describes the procedures and conditions used to evaluate the physical performance of inflatable restraint modules and module components during and after deployment.
1.2 The physical performance characteristics that may be obtained by this practice are internal cushion pressures determined by instrumentation, cushion geometries determined by high-speed photography, and material integrity determined by visual inspection.
1.3 This practice is applicable to driver and passenger side inflatable restraint modules.
1.4 Procedures and apparatus other than those stated in this practice may be used by agreement between the purchaser and the supplier with the specific deviations from the practice acknowledged in the report.
1.5 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system are not exact equivalents; therefore, each system must be used independent of the other.
1.6 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
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Designation:D5428 −08
StandardPractice for
1
Evaluating the Performance of Inflatable Restraint Modules
This standard is issued under the fixed designation D5428; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision.Anumber in parentheses indicates the year of last reapproval.A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
4
1. Scope 2.3 SAE Standard:
J211Instrumentation for Impact Test
1.1 This practice describes the procedures and conditions
usedtoevaluatethephysicalperformanceofinflatablerestraint
3. Terminology
modulesandmodulecomponentsduringandafterdeployment.
3.1 Definitions:
1.2 The physical performance characteristics that may be
3.2 For all terminology relating to D13.20, Inflatable
obtained by this practice are internal cushion pressures deter-
Restraints, refer to Terminology D6799.
mined by instrumentation, cushion geometries determined by
3.2.1 The following terms are relevant to this standard:
high-speed photography, and material integrity determined by
breakout pressure, cushion, deployment, inflatable restraint,
visual inspection.
inflator, maximum inflation pressure, module
1.3 This practice is applicable to driver and passenger side
3.3 For all other terms related to textiles, see Terminology
inflatable restraint modules.
D123.
1.4 Procedures and apparatus other than those stated in this
4. Summary of Practice
practice may be used by agreement between the purchaser and
the supplier with the specific deviations from the practice
4.1 Inflatablerestraintmodulesaremountedintoateststand
acknowledged in the report.
that allows for deployments under conditions that duplicate or
closely resemble the conditions in a vehicle.
1.5 The values stated in either SI units or inch-pound units
are to be regarded separately as standard. The values stated in
4.2 Instrumentation within the test stand charts inflation
each system are not exact equivalents; therefore, each system
pressures versus time. High-speed photography visually cap-
must be used independent of the other.
tures changing cushion geometries over time.
1.6 This standard does not purport to address all of the
4.3 Moduledeploymentsarereviewedforpressureandtime
safety concerns, if any, associated with its use. It is the
relationships, cushion geometries at one or more times during
responsibility of the user of this standard to establish appro-
the cycle, and post-inflation material analysis.
priate safety and health practices and determine the applica-
bility of regulatory limitations prior to use. 5. Significance and Use
5.1 This practice is intended to be a general guideline for
2. Referenced Documents
repetitive testing, safe conduct of tests, and accurate data
2
2.1 ASTM Standards:
collection for inflatable restraints.
D123Terminology Relating to Textiles
5.2 This practice may be used by the purchaser and the
D6799Terminology Relating to Inflatable Restraints
supplier to establish the criteria by which inflatable restraint
3
2.2 Federal Standard:
modules will be tested by the supplier to determine whether a
CFR 49Code of Federal Regulations
lot of material is acceptable for shipment to the purchaser.
5.3 Unless otherwise specified by agreement between the
purchaserandthesupplier,thispracticeshallconstitutethetest
1
ThispracticeisunderthejurisdictionofASTMCommitteeD13onTextilesand
conditions, procedures, and equipment by which inflatable
is the direct responsibility of Subcommittee D13.20 on Inflatable Restraints.
CurrenteditionapprovedJuly1,2008.PublishedJuly2008.Originallyapproved restraint modules are deployed for testing. It is intended to be
in 1993. Last previous edition approved in 2007 as D5428–02(2007). DOI:
used as a guideline in establishing a written material specifi-
10.1520/D5428-08.
cation or equivalent agreement between the purchaser and the
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
supplier. The specification may deviate from the practices
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website.
3 4
Available from the Superintendent of Documents, U.S. Government Printing Available from the Society of Automotive Engineers, 400 Commonwealth
Office, Washington, DC 20525. Drive, Warrendale, PA 15096-0001.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
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D5428−08
described herein when (based on experience) considerations of properfloorplanshouldincludeaphysicalbarrierbetweentest
fabric properties, material handling equipment, or inflatable personnelandthedeviceundertest.Inaddition,atemperat
...
This document is not anASTM standard and is intended only to provide the user of anASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation:D5428–02 (Reapproved 2007) Designation: D 5428 – 08
Standard Practice for
1
Evaluating the Performance of Inflatable Restraint Modules
This standard is issued under the fixed designation D5428; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision.Anumber in parentheses indicates the year of last reapproval.A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope
1.1 This practice describes the procedures and conditions used to evaluate the physical performance of inflatable restraint
modules and module components during and after deployment.
1.2 Thephysicalperformancecharacteristicsthatmaybeobtainedbythispracticeareinternalcushionpressuresdeterminedby
instrumentation, cushion geometries determined by high-speed photography, and material integrity determined by visual
inspection.
1.3 This practice is applicable to driver and passenger side inflatable restraint modules.
1.4 Procedures and apparatus other than those stated in this practice may be used by agreement between the purchaser and the
supplier with the specific deviations from the practice acknowledged in the report.
1.5 The values stated in either SI units or inch-pound units are to be regarded separately as standard.The values stated in each
system are not exact equivalents; therefore, each system must be used independent of the other.
1.6 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility
of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory
limitations prior to use.
2. Referenced Documents
2
2.1 ASTM Standards:
D123 Terminology Relating to Textiles
D6799 Terminology Relating to Inflatable Restraints
3
2.2 Federal Standard:
CFR 49 Code of Federal Regulations
4
2.3 SAE Standard:
J211 Instrumentation for Impact Test
3. Terminology
3.1 Definitions:
3.2For definitions of other terms used in this standard, refer to Terminology D123 and Terminology D6799. Definitions:
3.2 For all terminology relating to D13.20, Inflatable Restraints, refer to Terminology D6799.
3.2.1 The following terms are relevant to this standard: breakout pressure, cushion, deployment, inflatable restraint, inflator,
maximum inflation pressure, module
3.3 For all other terms related to textiles, see Terminology D123.
4. Summary of Practice
4.1 Inflatable restraint modules are mounted into a test stand that allows for deployments under conditions that duplicate or
closely resemble the conditions in a vehicle.
4.2 Instrumentation within the test stand charts inflation pressures versus time. High-speed photography visually captures
changing cushion geometries over time.
4.3 Module deployments are reviewed for pressure and time relationships, cushion geometries at one or more times during the
cycle, and post-inflation material analysis.
1
This practice is under the jurisdiction of ASTM Committee D13 on Textiles and is the direct responsibility of Subcommittee D13.20 on Inflatable Restraints .
Current edition approved July 1, 2007.2008. Published August 2007.July 2008. Originally approved in 1993. Last previous edition approved in 20022007 as
D5428–02(2007).
2
ForreferencedASTMstandards,visittheASTMwebsite,www.astm.org,orcontactASTMCustomerServiceatservice@astm.org.For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
3
Available from the Superintendent of Documents, U.S. Government Printing Office, Washington, DC 20525.
4
Available from the Society of Automotive Engineers, 400 Commonwealth Drive, Warrendale, PA 15096-0001.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1
---------------------- Page: 1 ----------------------
D5428–08
5. Significance and Use
5.1 This practice is intended to be a general guideline for repetitive testing, safe conduct of tests, and accurate data collection
for inflatable restraints.
5.2 This practice may be used by the purchaser and the supplier to establish the criteria by which inflatable restraint modules
will be tested by the supplier to determine whether a lot of material is acceptable for shipment to the purchaser.
5.3 Unless otherwise specified by agreement between the purchaser and the supplier, this practice shall constitute the test
conditions, procedures, and equipment by which inflatable restraint modul
...
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