ASTM_D_5426_-_12.pdf

Designation:D542612Standard Practices forVisual Inspection and Grading of Fabrics Used for InflatableRestraints1This standard is issued under the fixed designation D5426;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of last revision.A number in parentheses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope1.1 These practices cover procedures for the inspection andgrading of coated and uncoated woven flat and one-piecewoven(OPW)fabrics,and for the inspection and culling of cutparts made of such fabrics,all of which are used in themanufacture of inflatable restraint cushions.1.2 For ease of reference,the scope,summary of practice,significance and use,apparatus,sampling,procedure,andreport sections are listed separately for each inspection prac-tice.Inspection PracticeSectionFabric Rolls7Cut Pieces&OPW81.3 These practices can be used to distinguish those fabricimperfections that may adversely affect inflatable restraintcushion fabrication or performance from those imperfectionsthat will not.1.4 Procedures and apparatus other than those stated inthese practices may be used by agreement of the purchaser andsupplier with the specific deviations from these practicesacknowledged in the report.1.5 The values stated in SI units are to be regarded as thestandard.The values given in parentheses are for informationonly.1.6 This standard does not purport to address all of thesafety concerns,if any,associated with its use.It is theresponsibility of the user of this standard to establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.2.Referenced Documents2.1 ASTM Standards:2D123 Terminology Relating to TextilesD6799 Terminology Relating to Inflatable Restraints2.2 ASTM Adjuncts:3Reference Photographs of Imperfections3.Terminology3.1 For all terminology relating to D13.20,Inflatablerestraints,refer to Terminology D6799.3.1.1 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 coatingstreak,longfloat,loop,majorimperfection,minorimperfection,missing coating,missing yarn,misweave,module,rework,sharp crease,short float,short knot,softcontamination,spit mark,stain,stitching,tight yarn,yarnstreak.3.2 For all other terms related to textiles,see TerminologyD123.4.Summary of Practices4.1 Rolls of finished or coated fabric are examined forimperfections as the fabric traverses an inspection station.They are graded per Tables Tables 1-5.4.2 Cut pieces are inspected individually for imperfections.Cut pieces containing imperfections are culled from use forlater review.5.Significance and Use5.1 These practices are suitable for incorporation in aspecification.Any reference to material or cushion specifica-tion in these practices shall mean any similar agreementbetween the purchaser and supplier relating to the inspectionand acceptance of fabric intended for inflatable restraint use.5.2 These practices constitute the terminology,conditions,equipment,and procedures by which rolls of inflatable restraintfabrics or cut parts are inspected and graded.1These practices are under the jurisdiction ofASTM Committee D13 on Textilesand are the direct responsibility of Subcommittee D13.20 on Inflatable Restraints.Current edition approved Dec.1,2012.Published January 2013.Originallyapproved in 1993.Last previous edition approved in 2008 as D5426 081.DOI:10.1520/D5426-12.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service ast serviceastm.org.For Annual Book of ASTMStandardsvolume information,refer to the standrds Document Summary page onthe ASTM website.3Available 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 States1 5.3 A specification incorporating these practices may devi-ate from them to account for considerations of fabric property,material handling equipment,or inflatable restraint cushiondesign,or a combination thereof.Whenever such deviationsfrom standard occur,they are recorded in the report.5.4 These practices acknowledge that,in the normal courseof production,acceptable rolls of fabric will be producedcontaining imperfections;subsequently,pieces will be cut fromthe rolls and those pieces that contain imperfections restrictedin Tables 1-5 will be culled at that time.5.5 The accuracy in the results from visually inspectingfabric using these practices is affected by the ability of theinspector to detect,identify,and evaluate the severity of an