ASTM D5426-08

Standard Practices for Visual Inspection and Grading of Fabrics Used for Inflatable Restraints

SIGNIFICANCE AND USE
These practices are suitable for incorporation in a specification. Any reference to material or cushion specification in these practices shall mean any similar agreement between the purchaser and supplier relating to the inspection and acceptance of fabric intended for inflatable restraint use.
These practices constitute the terminology, conditions, equipment, and procedures by which rolls of inflatable restraint fabrics or cut parts are inspected and graded.
A specification incorporating these practices may deviate from them to account for considerations of fabric property, material handling equipment, or inflatable restraint cushion design, or a combination thereof. Whenever such deviations from standard occur, they are recorded in the report.
These practices acknowledge that, in the normal course of production, acceptable rolls of fabric will be produced containing imperfections; subsequently, pieces will be cut from the rolls and those pieces that contain imperfections restricted in Tables 1-5 will be culled at that time.
The accuracy in the results from visually inspecting fabric using these practices is affected by the ability of the inspector to detect, identify, and evaluate the severity of an imperfection in a moving fabric or in a cut part. Such ability can be affected by visual acuity, viewing distance, fabric traverse speed, lighting conditions, inspector discipline and training, and the availability and accuracy of suitable visual aids.
Systematic bias may result from using these practices whenever the precision or scale of the visual aids used to identify and quantify imperfections differs between the purchaser and supplier.
SCOPE
1.1 These practices cover procedures for the inspection and grading of coated and uncoated woven flat and one-piece woven (OPW) fabrics, and for the inspection and culling of cut parts made of such fabrics, all of which are used in the manufacture of inflatable restraint cushions.
1.2 For ease of reference, the scope, summary of practice, significance and use, apparatus, sampling, procedure, and report sections are listed separately for each inspection practice.
Inspection PracticeSection  Fabric Rolls7 Cut Pieces & OPW8
1.3 These practices can be used to distinguish those fabric imperfections that may adversely affect inflatable restraint cushion fabrication or performance from those imperfections that will not.
1.4 Procedures and apparatus other than those stated in these practices may be used by agreement of the purchaser and supplier with the specific deviations from these practices acknowledged in the report.
1.5 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.
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

• Status: Historical
• Publication Date: 30-Jun-2008
• ICS: 59.080.01 - Textiles in general
• Technical Committee: D13 - Textiles
• Drafting Committee: D13.20 - Inflatable Restraints

Relations

• Replaces: ASTM D5426-07a - Standard Practices for Visual Inspection and Grading of Fabrics Used for Inflatable Restraints
• Effective Date: 01-Jul-2008
• Replaced By: ASTM D5426-08e1 - Standard Practices for Visual Inspection and Grading of Fabrics Used for Inflatable Restraints
• Effective Date: 01-Jul-2008
• Referred By: ASTM D7139-20 - Standard Terminology for Cotton Fibers
• Effective Date: 01-Jul-2008
• Referred By: ASTM D4850-23 - Standard Terminology Relating to Fabrics and Fabric Test Methods
• Effective Date: 01-Jul-2008

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: D5426 – 08
Standard Practices for
Visual Inspection and Grading of Fabrics Used for Inflatable
1
Restraints
This standard is issued under the fixed designation D5426; 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 D6799 Terminology Relating to Inflatable Restraints
3
2.2 ASTM Adjuncts:
1.1 These practices cover procedures for the inspection and
Reference Photographs of Imperfections
grading of coated and uncoated woven flat and one-piece
woven (OPW) fabrics, and for the inspection and culling of cut
3. Terminology
parts made of such fabrics, all of which are used in the
3.1 For all terminology relating to D13.20, Inflatable re-
manufacture of inflatable restraint cushions.
straints, refer to Terminology D6799.
1.2 For ease of reference, the scope, summary of practice,
3.1.1 The following terms are relevant to this standard:
significance and use, apparatus, sampling, procedure, and
abrasion,airsplice,bleedthrough,blip,brokenfilament,bruise,
report sections are listed separately for each inspection prac-
coating slub, coating streak, coating transfer, contamination,
tice.
cushion, defect, filling bar, finished, foreign matter, grading,
Inspection Practice Section
hard contamination, heavy coating streak, hole, imperfection,
Fabric Rolls 7
inflatable restraint, inspection, light coating, light coating
Cut Pieces & OPW 8
streak, long float, loop, major imperfection, minor imperfec-
1.3 These practices can be used to distinguish those fabric tion, missing coating, missing yarn, misweave, module, re-
imperfections that may adversely affect inflatable restraint work, sharp crease, short float, short knot, soft contamination,
cushion fabrication or performance from those imperfections spit mark, stain, stitching, tight yarn, yarn streak.
that will not. 3.2 For all other terms related to textiles, see Terminology
1.4 Procedures and apparatus other than those stated in D123.
these practices may be used by agreement of the purchaser and
4. Summary of Practices
supplier with the specific deviations from these practices
acknowledged in the report. 4.1 Rolls of finished or coated fabric are examined for
imperfections as the fabric traverses an inspection station.
1.5 The values stated in SI units are to be regarded as the
standard. The values given in parentheses are for information They are graded per Tables Tables 1-5 .
4.2 Cut pieces are inspected individually for imperfections.
only.
1.6 This standard does not purport to address all of the Cut pieces containing imperfections are culled from use for
later review.
safety concerns, if any, associated with its use. It is the
responsibility of the user of this standard to establish appro-
5. Significance and Use
priate safety and health practices and determine the applica-
5.1 These practices are suitable for incorporation in a
bility of regulatory limitations prior to use.
specification. Any reference to material or cushion specifica-
2. Referenced Documents
tion in these practices shall mean any similar agreement
2
2.1 ASTM Standards: between the purchaser and supplier relating to the inspection
and acceptance of fabric intended for inflatable restraint use.
D123 Terminology Relating to Textiles
5.2 These practices constitute the terminology, conditions,
equipment,andproceduresbywhichrollsofinflatablerestraint
fabrics or cut parts are inspected and graded.
1
These practices are under the jurisdiction ofASTM Committee D13 onTextiles
5.3 A specification incorporating these practices may devi-
and are the direct responsibility of Subcommittee D13.20 on Inflatable Restraints.
Current edition approved July 1, 2008. Published August 2008. Originally ate from them to account for considerations of fabric property,
approved in 1993. Last previous edition approved in 2007 as D5426 – 07a. DOI:
material handling equipment, or inflatable restraint cushion
10.1520/D5426-08.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact ASTM Customer Service ast [e-mail]. For Annual Book of ASTM
3
Standardsvolume information, refer to the standrd’s Document Summary page on Available from: ASTM International Headquarters. Order Adjunct No.
the ASTM website. ADJD5426. Original adjunct produced in 1996.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1

---------------------- Page: 1 ----------------------
D5426 – 08
TABLE 1 Coating Non-Uniformity
Limits
Imperfection Definition
Minimum Maximum
A
Maximum Size
B
Separation Frequency
Soft the presence of materials not specified as part
...

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:D5426–07a Designation: D 5426 – 08
Standard Practices for
Visual Inspection and Grading of Fabrics Used for Inflatable
1
Restraints
This standard is issued under the fixed designation D 5426; 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 These practices cover procedures for the inspection and grading of coated and uncoated woven flat and one-piece woven
(OPW) fabrics, and for the inspection and culling of cut parts made of such fabrics, all of which are used in the manufacture of
inflatable restraint cushions.
1.2 For ease of reference, the scope, summary of practice, significance and use, apparatus, sampling, procedure, and report
sections are listed separately for each inspection practice.
Inspection Practice Section
Fabric Rolls 7
Cut Pieces 8
Cut Pieces & OPW 8
1.3 These practices can be used to distinguish those fabric imperfections that may adversely affect inflatable restraint cushion
fabrication or performance from those imperfections that will not.
1.4Only major imperfections are considered in the grading systems of these practices.
1.5Procedures 1.4 Procedures and apparatus other than those stated in these practices may be used by agreement of the
purchaser and supplier with the specific deviations from these practices acknowledged in the report.
1.6The1.5 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information
only.
1.71.6 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:
D 123 Terminology Relating to Textiles
D3990Terminology Relating to Fabric Defects 6799 Terminology Relating to Inflatable Restraints
3
2.2 ASTM Adjuncts:
Reference Photographs of Imperfections
3. Terminology
3.1Definitions—For definitions of textile terms used in these practices, refer to Terminologies D123 and D3990.
3.2 For definitions of imperfections in inflatable restraints, additionally refer to
3.1 For all terminology relating to D13.20, Inflatable restraints, refer to Terminology D 6799.
3.1.1 The following terms are relevant to this standard: abrasion, air splice, bleedthrough, blip, broken filament, bruise, coating
slub, coating streak, coating transfer, contamination, cushion, defect, filling bar, finished, foreign matter, grading, hard
contamination, heavy coating streak, hole, imperfection, inflatable restraint, inspection, light coating, light coating streak, long
float, loop, major imperfection, minor imperfection, missing coating, missing yarn, misweave, module, rework, sharp crease, short
float, short knot, soft contamination, spit mark, stain, stitching, tight yarn, yarn streak.
3.2 For all other terms related to textiles, see Terminology D 123.
1
These practices are under the jurisdiction of ASTM Committee D13 on Textiles and are the direct responsibility of Subcommittee D13.20 on Inflatable Restraints .
Current edition approved July 1, 2007.2008. Published July 2007.August 2008. Originally approved in 1993. Last previous edition approved in 2007 as D 5426 – 07a.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service ast [e-mail]. For Annual Book of ASTM
Standardsvolume information, refer to the standrd’s Document Summary page on the ASTM website.
3
Available from: ASTM International Headquarters. Order Adjunct No. ADJD5426. Original adjunct produced in 1996.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1

---------------------- Page: 1 ----------------------
D5426–08
4. Summary of Practices
4.1 Rolls of finished or coated fabric are examined for imperfections as the fabric traverses an inspection station. They are
graded per Tables Tables 1-5 of these practices.
4.Summary of Practices
4.1Rolls of finished or coated fabric are examined for major imperfections as the fabric traverses an inspection station.They are
graded on the basis of a unit area.
4.2Cut pieces are inspected individually for major imperfections. Cut pieces containing major imperfections are c
...