ASTM_D_6799_-_13.pdf

Designation:D679913Standard Terminology Relating toInflatable Restraints1This standard is issued under the fixed designation D6799;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 This standard covers terminology which is used in theevaluation of inflatable restraint fabrics,cushions,and mod-ules.2.Referenced Documents2.1 ASTM Standards:2D123 Terminology Relating to TextilesD3990 Terminology Relating to Fabric Defects3.Terminology3.1 Definitions:abrasion,nfor inflatable restraint fabrics,a fuzzy cluster ofbroken filaments damaged by scraping.accelerated aging,n in textile processing and testing,theuse of controlled environmental conditions to promote rapidphysical or chemical change in a textile material.DISCUSSIONFor inflatable restraints,practices for conducting accel-erated aging are designed to determine the aggravated effects on afabric from exposures to heat,humidity,or ozone,or a combinationthereof.These environmental conditions may also be cycled in combi-nation.The four accelerated aging procedures of concern to the designand manufacture of inflatable restraints are referred to as cycle aging,heat aging,humidity aging,and ozone aging.adhesive failure,nfor inflatable restraint sealed and sewnseams,a failure of seam sealant at the interface of twosubstrates where the sealant is sheared such that a portion ofthe sealant greater than 90%of the original thickness of thesealant layer must remain attached to one of the twosubstrate surfaces,while a portion of the sealant less than10%of the original thickness of the sealant layer mustremain attached to the other of the two substrate surfaces.air splice,nfor inflatable restraint fabrics,the thickerportion of a yarn resulting from the entanglement of thefilaments at the ends of two multifilament yarns to create acontinuous yarn.average dynamic air permeability(ADAP),nfor inflatablerestraints,the average of all of DAP measurements within aspecified range of pressure differentials.bleedthrough,n for coated inflatable restraint fabrics,thepresence of coating material on the uncoated side,betweentwo yarns,without covering either yarn.blip,nfor inflatable restraint fabrics,any short,irregularlyshaped or textured portion of an individual multifilamentyarn that has been woven into the fabric,including sloughoffs,stripbacks,fuzz balls,snarls,and slubs.breakout pressure,n for inflatable restraints,the pressurelevel during deployment which ruptures the module cover.broken filament,n for inflatable restraint fabrics,an indi-vidual filament,separated from a multifilament yarn bundle,that lies on the surface of the fabric.bruise,nfor inflatable restraint fabrics,a shift in thesquareness of the weave pattern in an area that has beensubjected to impact or pressure.coated fabric,na flexible material composed of a textilefabric and an adherent polymeric material applied to one orboth sides.coating slub,n for coated inflatable restraint fabrics,anirregularly shaped lump of coating material on the surface ofthe coated layer resembling a yarn slub.coating streak,n for coated inflatable restraint fabrics,minor variation in the color or opacity of the coated layer.coating transfer,n for coated inflatable restraint fabrics,thepresence of coating material on the uncoated side,coveringone or more yarns.cohesive failure,nfor inflatable restraint sealed and sewnseams,a failure of seam sealant at the interface of twosubstrates where the sealant is sheared such that a portion ofthe sealant greater than 10%of the original thickness of thesealant layer must remain attached to both of the twosubstrate surfaces.1This terminology is under the jurisdiction ofASTM Committee D13 on Textilesand is the direct responsibility of Subcommittee D13.20 on Inflatable Restraints.Current edition approved Jan.1,2013.Published February 2013.Originallyapproved in 2005.Last previous edition approved in 2008 as D6799 08.DOI:10.1520/D6799-13.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 contamination,n for coated inflatable restraint fabrics,thepresence of non-coating material in the coated layer.cushion,nfor inflatable restraints,the inflatable fabric en-velope portion of a module.cushion overpressurization,nfor inflatable restraints,theprocess of inflating a cushion at internal pressures greaterthan design deployment pressures;bag burst.defect,nspecific for inflatable restraints,an imperfection ina cut piece of fabric that judgment and experience indicate islikely to