Designation:D899−00(Reapproved2013)StandardPracticeforAppliedWeightPerUnitAreaofLiquidAdhesive1ThisstandardisissuedunderthefixeddesignationD899;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.ThisstandardhasbeenapprovedforusebyagenciesoftheDepartmentofDefense.1.Scope1.1Thispracticeprovidesaprocedurefortheestimationofthequantityofliquidadhesiveappliedinaspreadingorcoatingoperation.1.2ThevaluesstatedinSIunitsaretoberegardedasthestandard.Thevaluesgiveninparenthesesareforinformationonly.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.2.ReferencedDocuments2.1ASTMStandards:2D907TerminologyofAdhesives3.Terminology3.1Definitions—SeveraltermsinthispracticearedefinedinaccordancewithTerminologyD907.3.2DefinitionsofTermsSpecifictoThisStandard:3.2.1spreadingorcoatingweightperunitarea,n—thetotalquantityofliquidadhesiveuniformlyapplied,expressedinpoundsperthousandsquarefeetofjointorsurfacearea.(SeespreadinTerminologyD907.)3.2.2testspecimen,n—thematerialthatistobecoatedwithadhesive.(SeeadherendinTerminologyD907).3.2.3totalquantityofliquidadhesiveapplied—theweightoftheadhesiveonthetestspecimenasappliedonthesurfaceoratthegluejoint,whetherresultingfromasinglespread,adoublespread,ormultipleapplications.4.SignificanceandUse4.1Forthebondingofadherends,theamountofadhesivepresentiscriticalanditisimportanttounderstandthatthispracticedoesnotensuresufficientadhesiveispresentontheadherendsurface.4.2Thispracticecanbeusedtosupplementindustryusessuchasthatofvisuallycheckingthespreadortheuseofmil-thicknessgages.4.3Inlaboratoryandindustrialoperations,handorme-chanicalapplicationofadhesivescanbed...
