ASTM D6479-02

Standard Test Method for Determining the Edgecomb Resistance of Woven Fabrics Used in Inflatable Restraints

SCOPE
1.1 This test method covers the procedures for determining the resistance to edgecombing of a woven fabric used in inflatable restraints.
1.2 Procedures and apparatus other than those stated in this standard may be used by agreement of purchaser and supplier with the specific deviations from the standard practice acknowledged in the report.
1.3 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.
1.4 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.

General Information

• Status: Historical
• Publication Date: 09-Apr-2002
• ICS: 43.040.60 - Bodies and body components
• ICS: 59.080.30 - Textile fabrics
• Technical Committee: D13 - Textiles
• Drafting Committee: D13.20 - Inflatable Restraints

Relations

• Replaces: ASTM D6479-01 - Standard Test Method for Determining the Edgecomb Resistance of Woven Fabrics Used in Inflatable Restraints
• Effective Date: 10-Apr-2002
• Replaced By: ASTM D6479-02(2007) - Standard Test Method for Determining the Edgecomb Resistance of Woven Fabrics Used in Inflatable Restraints
• Effective Date: 01-Jul-2007
• Referred By: ASTM D5446-08(2019) - Standard Practice for Determining Physical Properties of Fabrics, Yarns, and Sewing Thread Used in Inflatable Restraints
• Effective Date: 10-Apr-2002

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation: D 6479 – 02
Standard Test Method for
Determining the Edgecomb Resistance of Woven Fabrics
1
Used in Inflatable Restraints
This standard is issued under the fixed designation D 6479; 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 E 691 Practice for Conducting an Interlaboratory Study to
2
Determine The Precision of a Test Method
1.1 This test method covers the procedures for determining
the resistance to edgecombing of a woven fabric used in
3. Terminology
inflatable restraints.
3.1 Definitions:
1.2 Procedures and apparatus other than those stated in this
3.2 For definitions of other terms used in this standard, refer
standard may be used by agreement of purchaser and supplier
to Terminology D 123 and Terminology D 6799.
with the specific deviations from the standard practice ac-
knowledged in the report.
4. Summary of Test Method
1.3 The values stated in either SI units or inch-pound units
4.1 One end of a test specimen is clamped within one jaw of
are to be regarded separately as standard. The values stated in
a CRE tensile testing machine and a special fixture pierces a
each system are not exact equivalents; therefore, each system
row of equally spaced needle holes through the opposite end of
must be used independent of the other.
the specimen. In accordance with Test Method D 5035, a
1.4 This standard does not purport to address all of the
tensile force is applied to the specimen until rupture occurs.
safety concerns, if any, associated with its use. It is the
The measurement of the force required to cause rupture is the
responsibility of the user of this standard to establish appro-
measurement of edgecomb resistance.
priate safety and health practices and determine the applica-
bility of regulatory limitations prior to use.
5. Significance and Use
5.1 A measurement of a fabric’s edgecomb resistance indi-
2. Referenced Documents
cates the relative tendency of a fabric to pull apart under seam
2.1 ASTM Standards:
stress or similar action. The related concepts of yarn slippage
D 76 Specification for Tensile Testing Machines for Tex-
and seam slippage are limited to sewn seams, whereas the
2
tiles
2 measurement of edgecomb resistance is made at the edge of a
D 123 Terminology Relating to Textiles
cut part in the absence of a sewn seam. The absence of a sewn
2
D 1776 Practice for Conditioning Textiles for Testing
seam in this test method eliminates the effect that a particular
D 2904 Practice for Interlaboratory Testing of a Textile Test
stitch might have on the tendency of a yarn to slip near an edge
2
Method that Produces Normally Distributed Data
of a cut part
D 2906 Practice for Statements on Precision and Bias for
5.2 This test method is useful for material design evalua-
2
Textiles
tions in such applications as airbags in which seam stress is a
D 5035 Test Method for Breaking Force and Elongation of
major concern.
3
Textile Fabrics (Raveled Strip)
5.3 This method may be used as a complement to Test
D 5822 (Test Method for Determining Seam Strength in
3 Method D 5822.
Inflatable Restraint Cushion)
4
D 6799 Terminology Relating to Inflatable Restraints
6. Apparatus
6.1 Tensile Testing Machine—A constant-rate-of-extension
1
(CRE) type, that is designed for the tensile forces anticipated,
This test method is under the jurisdiction ofASTM Committee D13 onTextiles
and are the direct responsibility of Subcommittee D13.20 on Inflatable Restraints.
thatisoperatedatarateof200 610mm/min(860.5in./min),
Current edition approved April 10, 2002. Published June 2002. Originally
that has a force range selected such that the anticipated break
published as D 6479–99. Last previous edition D 6479 – 01.
2 occurs between 10 and 90 % of full scale load, and that has
Annual Book of ASTM Standards, Vol 07.01.
3
Annual Book of ASTM Standards, Vol 07.02. jaws and grip faces as agreed upon by purchaser and supplier.
4
Annual Book of ASTM Standards, Vol 07.02.
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D 6479
6.2 Clamps, jaws with smooth, flat, parallel faces a mini- 7.4 From the laboratory sample, select five test specimens
mum of 60 mm wide by 25 mm tall. The jaws may be padded each from the warp and fill directions (Fig. 2).
or coated under the jaw face area. 7.5 Without sealing or unraveling the edges, cut each
6.3 Fixture, compatible with tensile tester, equipped with specimen 50 6 1 mm wide and 300 6 5 mm long, with the
twelve equally spaced 1 mm diameter pins, 8 mm in lengt
...