ASTM D5822-13
(Test Method)Standard Test Method for Determining Seam Strength in Inflatable Restraint Cushions
Standard Test Method for Determining Seam Strength in Inflatable Restraint Cushions
SIGNIFICANCE AND USE
5.1 Seam strength testing is used for design validation and for lot acceptance.
5.2 This test method constitutes the conditions, procedures, and equipment by which either seams taken from inflatable restraint cushions, or seam types that can potentially be used for inflatable restraint cushions are tested for seam strength, seam efficiency, and failure mode. It is intended to be used as a guideline in establishing a written part specification or print. The specification or agreement of purchaser and supplier may deviate from the procedures described herein when (based on experience) considerations of equipment, cushion design, or other factors dictate otherwise.
5.3 In cases of dispute arising from differences in reported test results when using this test method for acceptance testing of commercial shipments, the purchaser and the supplier should perform comparative tests to determine if there is a statistical bias between their laboratories. Competent statistical assistance is recommended for the investigation of bias. As a minimum, the two parties should take a group of test specimens from the same lot of fabric to be evaluated, which utilize a like seam assembly (or standard seam assembly) to achieve seam interaction. The test specimens should then be randomly assigned in equal numbers to each laboratory for testing. If a bias is found, either its cause must be determined and corrected, or the purchaser and supplier must agree to interpret future test results in light of the known bias.
5.4 Test Method D5822 is a reliable test method but procedures which may require special attention are identified in the precision and bias section of this test method.
SCOPE
1.1 This test method covers the measurement of seam efficiency and the maximum seam strength in inflatable restraint cushions composed of woven fabrics when a force is applied perpendicular to the seam, using a grab test. For evaluating sewing thread, refer to Test Method D204.
1.2 This test method is restricted to seams that are either obtained from an inflatable restraint cushion or prepared off-line, specifically for testing, using fabric blanks, not obtained from a previously sewn cushion assembly. Seams may include but are not limited to sewn, OPW, glued, sealed and sewn, or fused (chemically or thermally). This test method can be used for either lot testing of production cushions, or for research and development purposes.
1.3 This test method is used when the measurement of a resistance to a specified force, a breaking force, a minimum elongation, or a combination thereof are required to determine the seam strength, or seam integrity of a particular fabric for inflatable restraint use.
1.4 Procedures and apparatus other than those stated in this standard may be used by agreement between purchaser and supplier with the specific deviations from the standard 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 and health practices and determine the applicability of regulatory limitations prior to use.
General Information
Relations
Buy Standard
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:D5822 −13
Standard Test Method for
Determining Seam Strength in Inflatable Restraint
1
Cushions
This standard is issued under the fixed designation D5822; 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
2.1 ASTM Standards:
1.1 This test method covers the measurement of seam
D123 Terminology Relating to Textiles
efficiency and the maximum seam strength in inflatable re-
D204 Test Methods for Sewing Threads
straint cushions composed of woven fabrics when a force is
D1776 Practice for Conditioning and Testing Textiles
applied perpendicular to the seam, using a grab test. For
D6799 Terminology Relating to Inflatable Restraints
evaluating sewing thread, refer to Test Method D204.
1.2 This test method is restricted to seams that are either
3. Terminology
obtained from an inflatable restraint cushion or prepared
3.1 For all terminology relating to D13.20, Inflatable
off-line, specifically for testing, using fabric blanks, not ob-
restraints, refer to Terminology D6799.
tained from a previously sewn cushion assembly. Seams may
3.1.1 The following terms are relevant to this standard:
include but are not limited to sewn, OPW, glued, sealed and
seam efficiency, seam failure, seam strength.
sewn, or fused (chemically or thermally). This test method can
3.2 For all other terms related to textiles, see Terminology
be used for either lot testing of production cushions, or for
D123.
research and development purposes.
4. Summary of Test Method
1.3 This test method is used when the measurement of a
resistance to a specified force, a breaking force, a minimum
4.1 Specimens either taken from inflatable restraint cush-
elongation, or a combination thereof are required to determine
ions or made off-line using fabric blanks, specifically for
the seam strength, or seam integrity of a particular fabric for
testing, are destructively tested in a tensile testing machine
inflatable restraint use.
under laboratory conditions to determine seam strength and
seam efficiency and nature of the failure mode.
1.4 Procedures and apparatus other than those stated in this
standard may be used by agreement between purchaser and
5. Significance and Use
supplier with the specific deviations from the standard ac-
5.1 Seam strength testing is used for design validation and
knowledged in the report.
for lot acceptance.
1.5 The values stated in either SI units or inch-pound units
5.2 This test method constitutes the conditions, procedures,
are to be regarded separately as standard. The values stated in
and equipment by which either seams taken from inflatable
each system are not exact equivalents; therefore, each system
restraint cushions, or seam types that can potentially be used
must be used independently of the other.
for inflatable restraint cushions are tested for seam strength,
1.6 This standard does not purport to address all of the seam efficiency, and failure mode. It is intended to be used as
a guideline in establishing a written part specification or print.
safety concerns, if any, associated with its use. It is the
The specification or agreement of purchaser and supplier may
responsibility of the user of this standard to establish appro-
deviate from the procedures described herein when (based on
priate safety and health practices and determine the applica-
experience) considerations of equipment, cushion design, or
bility of regulatory limitations prior to use.
other factors dictate otherwise.
1
This test method is under the jurisdiction ofASTM Committee D13 on Textiles
2
and 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 Jan. 1, 2013. Published February 2013. Originally contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
approved in 1995. Last previous edition approved in 2008 as D5822 – 08. DOI: Standards volume information, refer to the standard’s Document Summary page on
10.1520/D5822-13. the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
---------------------- Page: 1 ----------------------
D5822−13
5.3 In cases of dispute arising from differences in reported 7. Sampling
test results when using this test method for acceptance testing
7.1 Seam strength testing is a destructive test and therefore
of commercial shipments, the purchaser and the supplier
necessitates sampling procedures if used in conjunction with
should perform comparative tests to determine if th
...
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: D5822 − 08 D5822 − 13
Standard Test Method for
Determining Seam Strength in Inflatable Restraint
1
Cushions
This standard is issued under the fixed designation D5822; 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 test method covers the measurement of seam efficiency and the maximum seam strength in inflatable restraint cushions
composed of woven fabrics when a force is applied perpendicular to the seam, using a grab test. For evaluating sewing thread, refer
to Test Method D204.
1.2 This test method is restricted to seams that are either obtained from an inflatable restraint cushion. cushion or prepared
off-line, specifically for testing, using fabric blanks, not obtained from a previously sewn cushion assembly. Seams may include
but are not limited to sewn, OPW, glued, sealed and sewn, or fused (chemically or thermally). This test method can be used for
either lot testing of production cushions, or for research and development purposes.
1.3 This test method is used when the measurement of a resistance to a specified force, a breaking force, a minimum elongation,
or a combination thereof are required to determine the seam strength, or seam integrity of a particular fabric for inflatable restraint
use.
1.4 Procedures and apparatus other than those stated in this standard may be used by agreement between purchaser and supplier
with the specific deviations from the standard 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 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
D204 Test Methods for Sewing Threads
D1776 Practice for Conditioning and Testing Textiles
D6799 Terminology Relating to Inflatable Restraints
3. Terminology
3.1 For all terminology relating to D13.20, Inflatable restraints, refer to Terminology D6799.
3.1.1 The following terms are relevant to this standard: seam efficiency, seam failure, seam strength.
3.2 For all other terms related to textiles, see Terminology D123.
4. Summary of Test Method
4.1 Specimens with and without seam assemblies either taken from inflatable restraint cushions or made off-line using fabric
blanks, specifically for testing, are destructively tested in a tensile testing machine under laboratory conditions to determine seam
strength and seam efficiency. efficiency and nature of the failure mode.
1
This test method 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, 2008Jan. 1, 2013. Published July 2008February 2013. Originally approved in 1995. Last previous edition approved in 20072008 as
D5822 – 03D5822 – 08.(2007). DOI: 10.1520/D5822-08.10.1520/D5822-13.
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 ----------------------
D5822 − 13
5. Significance and Use
5.1 Seam strength testing is used for design validation and for lot acceptance.
5.2 This test method constitutes the conditions, procedures, and equipment by which inflatable restraints either seams taken
from inflatable restraint cushions, or seam types that can potentially be used for inflatable restraint cushions are tested for seam
strength and seam efficiency.strength, seam efficiency, and failure mode. It is intended to be used as a guideline in establishing a
written part specification or print. The specification or agreement of purchaser and supplier may deviate from the procedures
described herein when (based on experience) co
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.