Designation:D2136−19´1StandardTestMethodforCoatedFabrics—Low-TemperatureBendTest1ThisstandardisissuedunderthefixeddesignationD2136;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.ThisstandardhasbeenapprovedforusebyagenciesoftheU.S.DepartmentofDefense.ε1NOTE—Corrected2.2editoriallyinMarch2021.1.Scope1.1Fabricscoatedwithrubberorrubber-likematerialsdisplayincreasedstiffeningwhenexposedtodecreasingam-bienttemperatures.Thistestmethoddescribesasimplepass/failprocedurewherebymaterialflexibilityataspecifiedlowtemperaturecanbedetermined.Failureisindicativeofunac-ceptabilityofthecoatedfabricforuseatthattemperature.1.2ThevaluesstatedinSIunitsaretoberegardedasstandard.Thevaluesgiveninparenthesesareforinformationonly.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafety,health,andenvironmentalpracticesanddeter-minetheapplicabilityofregulatorylimitationspriortouse.Forspecificprecautionarystatementsee8.1.1.4Thisinternationalstandardwasdevelopedinaccor-dancewithinternationallyrecognizedprinciplesonstandard-izationestablishedintheDecisiononPrinciplesfortheDevelopmentofInternationalStandards,GuidesandRecom-mendationsissuedbytheWorldTradeOrganizationTechnicalBarrierstoTrade(TBT)Committee.2.ReferencedDocuments2.1ASTMStandards:2D751TestMethodsforCoatedFabrics2.2ASTMAdjuncts:BendingFixtureDrawings33.SummaryofTestMethod3.1Specimenscutfromthecoatedfabricareconditionedataselectedlowtemperatureforaspecifiedduration.Whileremainingexposedatthattemperature,theyarethenindividu-allyplacedinabendingapparatusandbentthroughaspecifiedangle.Failureofthecoatedfabricisindicatedbyfractureofthespecimenortheappearanceofsurfacecracksinthecoating.4.SignificanceandUse4.1Thistestmethodevalua...
