Designation:D5169−98(Reapproved2021)StandardTestMethodforShearStrength(DynamicMethod)ofHookandLoopTouchFasteners1ThisstandardisissuedunderthefixeddesignationD5169;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thistestmethodmeasurestheshearstrengthofhookandlooptouch(CRE)fastenersusingarecordingconstantrateofextensiontensiletestingmachine.1.2Thevaluesstatedininch-poundunitsaretoberegardedasstandard.ThevaluesgiveninparenthesesaremathematicalconversionstoSIunitsthatareprovidedforinformationonlyandarenotconsideredstandard.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafety,health,andenvironmentalpracticesanddeter-minetheapplicabilityofregulatorylimitationspriortouse.1.4Thisinternationalstandardwasdevelopedinaccor-dancewithinternationallyrecognizedprinciplesonstandard-izationestablishedintheDecisiononPrinciplesfortheDevelopmentofInternationalStandards,GuidesandRecom-mendationsissuedbytheWorldTradeOrganizationTechnicalBarrierstoTrade(TBT)Committee.2.ReferencedDocuments2.1ASTMStandards:2D76/D76MSpecificationforTensileTestingMachinesforTextilesD123TerminologyRelatingtoTextilesD618PracticeforConditioningPlasticsforTesting3.Terminology3.1Definitions:3.1.1hookandloopfastener—atouchfastener,comprisedoftwoflexiblematingstrips,thesurfaceofonematingstripbeingcoveredwithtiny,stiffprotrusionsshapedlikehookswhichengagetheothermatingstripwhichiscoveredwithpliableloops.3.1.1.1Discussion—Thisfastenercomprisesanon-adhesivemethodofjoiningtwomaterialswherereadyadjustmentandremovalisdesirableandfasteningisaccomplishedbypressingthematingstripstogetherandseparationisaccomplishedbysimplypeelingapart.Termshereinreferringtohookandloopfasteningsystemsshallbeconstrued...
