ASTM D5427-02
(Practice)Standard Practice for Accelerated Aging of Inflatable Restraint Fabrics
Standard Practice for Accelerated Aging of Inflatable Restraint Fabrics
SCOPE
1.1 This practice describes the procedures for the accelerated aging of inflatable restraint fabrics when required as a preparatory step for other test methods.
1.1.1 In Section , this practice lists four methods for conducting accelerated aging that are of concern to the design and manufacture of inflatable restraints. They are as follows:DescriptionSectionCycle aging8.4Heat aging8.5Humidity aging8.6Ozone aging8.7
1.2 This practice may be used in conjunction with other ASTM test methods when subsequent tests of physical properties are required of aged fabric specimens.
1.3 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 standard practice acknowledged in the report.
1.4 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.
1.5 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: D 5427 – 02
Standard Practice for
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Accelerated Aging of Inflatable Restraint Fabrics
This standard is issued under the fixed designation D 5427; 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 (e) indicates an editorial change since the last revision or reapproval.
1. Scope MIL-STD-810E Environmental Testing and Engineering
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Guidelines
1.1 This practice describes the procedures for the acceler-
ated aging of inflatable restraint fabrics when required as a
3. Terminology
preparatory step for other test methods.
3.1 Definitions:
1.1.1 In Section 7, this practice lists four methods for
3.1.1 For definitions of other terms used in this standard,
conducting accelerated aging that are of concern to the design
refer to Terminology D 123 and Terminology D 6799.
and manufacture of inflatable restraints. They are as follows:
Description Section
4. Summary of Practice
Cycle aging 8.4
4.1 After conditioning in the standard atmosphere for test-
Heat aging 8.5
ing textiles, test specimens are subjected to accelerated aging
Humidity aging 8.6
for heat, humidity, ozone, or cycling.
Ozone aging 8.7
4.2 Aged specimens are then reconditioned in the standard
1.2 This practice may be used in conjunction with other
atmosphere for testing textiles for subsequent testing of the
ASTM test methods when subsequent tests of physical prop-
physical properties of inflatable restraint fabrics.
erties are required of aged fabric specimens.
1.3 Procedures and apparatus other than those stated in this
5. Significance and Use
practice may be used by agreement between the purchaser and
5.1 For inflatable restraints, practices for conducting accel-
the supplier with the specific deviations from the standard
erated aging are designed to determine the aggravated effects
practice acknowledged in the report.
on a fabric from exposures to heat, humidity, or ozone, or a
1.4 The values stated in either SI units or inch-pound units
combination thereof. These environmental conditions may also
are to be regarded separately as standard. The values stated in
be cycled in combination. The four accelerated aging proce-
each system are not exact equivalents; therefore, each system
dures of concern to the design and manufacture of inflatable
must be used independently of the other.
restraints are referred to as cycle aging, heat aging, humidity
1.5 This standard does not purport to address all of the
aging, and ozone aging.
safety concerns, if any, associated with its use. It is the
5.2 The environmental conditions described in this practice
responsibility of the user of this standard to establish appro-
are designed to allow restraints so that reliable comparisons
priate safety and health practices and determine the applica-
may be made between different fabrics and different laborato-
bility of regulatory limitations prior to use.
ries.
5.3 In order to achieve precise and reliable physical prop-
2. Referenced Documents
erty comparisons of different fabrics, it is necessary to control
2.1 ASTM Standards:
accurately the humidity, temperature, ozone, and cycling con-
2
D 123 Terminology Relating To Textiles
ditions to which the fabric is subjected.
2
D 1776 Practice for Conditioning Textiles for Testing
5.4 Fabric specimens are configured in accordance with the
3
D 6799 Terminology Relating to Inflatable Restraints
requirements of test methods to be conducted on the specimens
E 145 Specification for Gravity-Convection and Forced-
subsequent to accelerated aging.
4
Ventilation Ovens
5.5 Unless otherwise specified by agreement between the
2.2 Military Standard:
purchaser and the supplier, this practice shall constitute the
conditions, procedures, and equipment by which inflatable
restraint fabrics are conditioned and aged. It is intended to be
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This practice is under the jurisdiction of ASTM Committee D13 on Textiles and
used as a guideline in establishing a written material specifi-
is the direct responsibility of Subcommittee D13.20 on Inflatable Restraints.
Current edition approved April 10, 2002. Published June 2002. Originally
cation. The specification or agreement of the purchaser and the
published as D 5427 – 93. Last previous edition D 5427 – 98.
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Annual Book of ASTM Standards, Vol 07.01.
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Annual Book of ASTM Standards, Vol 07.02. Available from the Defense Printing Office, Building 4D, 700 Robbins Avenue,
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Annual Book of ASTM Standards, Vol 14.02. Philadelphia, PA 19111-5093.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
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