Designation:D1781−98(Reapproved2012)StandardTestMethodforClimbingDrumPeelforAdhesives1ThisstandardisissuedunderthefixeddesignationD1781;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.ThisstandardhasbeenapprovedforusebyagenciesoftheU.S.DepartmentofDefense.1.Scope1.1Thistestmethodcoversthedeterminationofthepeelresistanceofadhesivebondsbetween:arelativelyflexibleadherendandarigidadherend;andtherelativelyflexiblefacingofasandwichstructureanditscore,whentestedunderspecifiedconditions.1.2ThevaluesstatedinSIunitsaretoberegardedasthestandard.Thevaluesgiveninparenthesesareforinformationonly.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.2.ReferencedDocuments2.1ASTMStandards:2B209SpecificationforAluminumandAluminum-AlloySheetandPlateD907TerminologyofAdhesivesE4PracticesforForceVerificationofTestingMachines2.2ASTMAdjuncts:ClimbingDrumPeelTester33.Terminology3.1Definitions—ManyofthetermsusedinthistestmethodaredefinedinTerminologyD907.4.SummaryofTestMethod4.1Determinethepeelingforceofaconditionedadhesivebondedsandwichassemblybypeelingafaceskinaroundacirculardrum.Thisisdonebyclampingtheassemblyinauniversaltestmachine.Theaveragepeelingloadisdeterminedusingastandardformula.5.SignificanceandUse5.1Thistestmethodmaybeusedtodeterminecomparativeratherthanfundamentalmeasurementsofadhesionandisparticularlysuitableforprocesscontrol,someexamplesofwhicharelisted.5.1.1Thistestmethodisparticularlysensitivetoadherendsurfacepreparationandisofvaluewheretheadhesiveisusedinconjunctionwithaprimer.5.1.2Whenarelativelybrittleadhesiveisused,thepeelresistancecanoftengiveanindicationofthedegreeofcure,t...
