ASTM D5807-18
(Practice)Standard Practice for Evaluating the Overpressurization Characteristics of Inflatable Restraint Cushions
Standard Practice for Evaluating the Overpressurization Characteristics of Inflatable Restraint Cushions
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. Cushion overpressurization testing may be used for design and production validation, for manufacturing process control, for lot acceptance, or for a combination thereof.
5.2 This practice constitutes the conditions, apparatus, and procedures by which inflatable restraints are commonly tested for cushion overpressurization. It is intended to be used as a guideline in establishing a cushion specification or equivalent document. The practices in the specification may deviate from the practices described herein when (based on experience) considerations of equipment, cushion design, or other factors dictate otherwise.
5.3 There exists a large variety in cushion configurations and equipment designs, obviating a standard test method for cushion overpressurization. Therefore, a cushion specification should incorporate the practices stated herein when describing a test method for testing a specific cushion geometry and apparatus design. To ensure accuracy and repeatability, the specification should also address precision and bias in a manner consistent with ASTM prescribed procedures and consistent with the particular cushion geometry, equipment in use, and test procedures.
5.3.1 Sources of variation in cushion overpressurization testing procedures include orifice size, attachment fixture, sensor location, method of attachment, presence or absence of internal bladder, accumulator size and pressure, transducer type and location, the presence or absence of tethers, presence or absence of vent plugs, and the accuracy of timing devices and pressure sensors. All sources of equipment and procedural variation should be addressed in the applicable specification.
5.4 In accordance with the applicable specification, cushions may be pressurized without bursting to determine their resistance to a fixed level of high in...
SCOPE
1.1 This practice covers the procedures and conditions used to evaluate the physical performance of inflatable restraint cushions during and after overpressurization testing at elevated pressures capable of causing cushion bursting using air pressurization equipment.
1.2 The physical performance characteristics that may be obtained in conjunction with this practice are internal cushion pressures determined by instrumentation and material integrity, determined by visual inspection.
1.3 This practice is applicable to all inflatable restraint cushions.
1.4 Procedures and apparatus other than those stated in this practice may be used by agreement between purchaser and supplier with the specific deviations from this 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 independently 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.
1.7 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
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This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the
Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
Designation: D5807 −18
Standard Practice for
Evaluating the Overpressurization Characteristics of
1
Inflatable Restraint Cushions
This standard is issued under the fixed designation D5807; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope 2. Referenced Documents
2
1.1 This practice covers the procedures and conditions used 2.1 ASTM Standards:
to evaluate the physical performance of inflatable restraint D123 Terminology Relating to Textiles
cushions during and after overpressurization testing at elevated D6799 Terminology Relating to Inflatable Restraints
pressures capable of causing cushion bursting using air pres-
3. Terminology
surization equipment.
3.1 Definitions:
1.2 The physical performance characteristics that may be
3.2 For all terminology relating to D13.20, Inflatable
obtained in conjunction with this practice are internal cushion
Restraints, refer to Terminology D6799.
pressures determined by instrumentation and material integrity,
3.2.1 The following terms are relevant to this standard:
determined by visual inspection.
cushion, cushion overpressurization, deployment, inflatable
1.3 This practice is applicable to all inflatable restraint
restraint, module, standard atmosphere for testing textiles.
cushions.
3.3 For all other terms related to textiles, see Terminology
1.4 Procedures and apparatus other than those stated in this
D123.
practice may be used by agreement between purchaser and
supplier with the specific deviations from this practice ac- 4. Summary of Practice
knowledged in the report.
4.1 Inflatable restraint cushions are tested under laboratory
1.5 The values stated in either SI units or inch-pound units conditions to evaluate cushion integrity when exposed to
are to be regarded separately as standard. The values stated in internal cushion pressures greater than deployment pressures.
each system are not exact equivalents; therefore, each system
If cushion rupture occurs, the rupture pressure, time to rupture,
must be used independently of the other. and mode of rupture are recorded.
1.6 This standard does not purport to address all of the
4.2 Inflatable restraint cushions are mounted into a test
safety concerns, if any, associated with its use. It is the
stand that allows for inflations under conditions that exceed
responsibility of the user of this standard to establish appro-
deployment pressures. Instrumentation within the test stand
priate safety, health, and environmental practices and deter-
charts inflation pressures versus time and may allow for
mine the applicability of regulatory limitations prior to use.
photographic review of the overpressurization sequence.
1.7 This international standard was developed in accor-
4.3 Cushion overpressurization results are reviewed for
dance with internationally recognized principles on standard-
pressure and time relationships, and post-inflation material
ization established in the Decision on Principles for the
analysis.
Development of International Standards, Guides and Recom-
mendations issued by the World Trade Organization Technical
5. Significance and Use
Barriers to Trade (TBT) Committee.
5.1 This practice is intended to be a general guideline for
repetitive testing, safe conduct of tests, and accurate data
1
This practice is under the jurisdiction ofASTM Committee D13 on Textiles and
2
is the direct responsibility of Subcommittee D13.20 on Inflatable Restraints. For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Current edition approved July 1, 2018. Published July 2018. Originally approved contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
in 1995. Last previous edition approved in 2013 as D5807 – 08(2013). DOI: Standards volume information, refer to the standard’s Document Summary page on
10.1520/D5807-18. the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
---------------------- Page: 1 ----------------------
D5807 − 18
collection for inflatable restraints. Cushion overpressurization shielding for operator protection if the cushion overpressuriza-
testing may be used for design and production validation, for tion testing unit is not physically isolated in a separate room
manufacturing process control, for lot acceptance, or for a from the operator during actuation.
combination thereof.
6.5 Pressure Transducer and Pickup Tube, suitable for
measu
...
This document is not an ASTM standard and is intended only to provide the user of an ASTM 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: D5807 − 08 (Reapproved 2013) D5807 − 18
Standard Practice for
Evaluating the Overpressurization Characteristics of
1
Inflatable Restraint Cushions
This standard is issued under the fixed designation D5807; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number 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 covers the procedures and conditions used to evaluate the physical performance of inflatable restraint cushions
during and after overpressurization testing at elevated pressures capable of causing cushion bursting using air pressurization
equipment.
1.2 The physical performance characteristics that may be obtained in conjunction with this practice are internal cushion
pressures determined by instrumentation and material integrity, determined by visual inspection.
1.3 This practice is applicable to all inflatable restraint cushions.
1.4 Procedures and apparatus other than those stated in this practice may be used by agreement between purchaser and supplier
with the specific deviations from this 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 independently 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 safety, health, and healthenvironmental practices and determine the
applicability of regulatory limitations prior to use.See Section 8 for specific hazard information.
1.7 This international standard was developed in accordance with internationally recognized principles on standardization
established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued
by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
2. Referenced Documents
2
2.1 ASTM Standards:
D123 Terminology Relating to Textiles
D6799 Terminology Relating to Inflatable Restraints
3. Terminology
3.1 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: cushion, cushion overpressurization, deployment, inflatable restraint,
module, standard atmosphere for testing textiles.
3.3 For all other terms related to textiles, see Terminology D123.
4. Summary of Practice
4.1 Inflatable restraint cushions are tested under laboratory conditions to evaluate cushion integrity when exposed to internal
cushion pressures greater than deployment pressures. If cushion rupture occurs, the rupture pressure, time to rupture, and mode
of rupture are recorded.
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, 2013July 1, 2018. Published September 2013July 2018. Originally approved in 1995. Last previous edition approved in 20082013 as
D5807 – 08.D5807 – 08(2013). DOI: 10.1520/D5807-08R13.10.1520/D5807-18.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or 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.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
---------------------- Page: 1 ----------------------
D5807 − 18
4.2 Inflatable restraint cushions are mounted into a test stand that allows for inflations under conditions that exceed deployment
pressures. Instrumentation within the test stand charts inflation pressures versus time and may allow for photographic review of
the overpressurization sequence.
4.3 Cushion overpressurization results are reviewed for pressure and time relationships, and post-inflation material analysis.
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. Cushion overpressurization testing may be used for design and production validation, for manufacturing
process control, for lot acceptan
...
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