Designation:D2918−99(Reapproved2020)StandardTestMethodforDurabilityAssessmentofAdhesiveJointsStressedinPeel1ThisstandardisissuedunderthefixeddesignationD2918;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.INTRODUCTIONThecombinationofstressandmoisturedecreasesthedurabilityofmostadhesivejoints.Stressesinthepresenceofwaterorwatervapormaycausesomeadhesivejointstofailatsomefractionofthestressrequiredtobreakthedryjoint.Thetimetofailureforagivenadhesivejointtestedundermoistconditionsgenerallydecreaseswithincreasingstress,temperature,andrelativehumidity.1.Scope1.1Thistestmethodprovidesdataforassessingthedura-bilitiesofadhesivejointsbymeansofT-peeltypespecimensstressedincontactwithair,airinequilibriumwithcertainsolutions,water,aqueoussolutions,orotherenvironmentsatvarioustemperatures.1.2ThevaluesstatedinSIunitsaretoberegardedasthestandard.Thevaluesgiveninparenthesesareforinformationonly.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafety,health,andenvironmentalpracticesanddeter-minetheapplicabilityofregulatorylimitationspriortouse.1.4Thisinternationalstandardwasdevelopedinaccor-dancewithinternationallyrecognizedprinciplesonstandard-izationestablishedintheDecisiononPrinciplesfortheDevelopmentofInternationalStandards,GuidesandRecom-mendationsissuedbytheWorldTradeOrganizationTechnicalBarrierstoTrade(TBT)Committee.2.ReferencedDocuments2.1ASTMStandards:2B209SpecificationforAluminumandAluminum-AlloySheetandPlateD907TerminologyofAdhesivesD1828PracticeforAtmosphericExposureofAdhesive-BondedJointsandStructuresD1876TestMethodforPeelResistanceofAdhesives(T-PeelTest)D2651GuideforPreparationofMetalSurfacesforAdhesiveBondingE104PracticeforMaintainingConstantRelativeHumid...
