Designation:C366/C366M−16StandardTestMethodsforMeasurementofThicknessofSandwichCores1ThisstandardisissuedunderthefixeddesignationC366/C366M;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.ThisstandardhasbeenapprovedforusebyagenciesoftheU.S.DepartmentofDefense.1.Scope1.1Thesetestmethodscoverplantmanufacturingproce-duresformeasuringthethicknessofflatsandwichcores.Permissiblecorematerialformsincludethosewithcontinuousbondingsurfaces(suchasbalsawoodandfoams)aswellasthosewithdiscontinuousbondingsurfaces(suchashoney-comb).Thetwotestmethodscoveredincludethefollowing:1.1.1TestMethodA—Roller-TypeThicknessTester.1.1.2TestMethodB—Disk-TypeThicknessTester.NOTE1—Thesetestmethodsaredesignedformeasuringthicknessofcoreasitisproducedandarenotintendedforuseindeterminingdimensionsofcorespecimensforothertests.1.2ThevaluesstatedineitherSIunitsorinch-poundunitsaretoberegardedseparatelyasstandard.Thevaluesstatedineachsystemmaynotbeexactequivalents;therefore,eachsystemshallbeusedindependentlyoftheother.Combiningvaluesfromthetwosystemsmayresultinnon-conformancewiththestandard.1.2.1Withinthetexttheinch-poundunitsareshowninbrackets.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.2.ReferencedDocuments2.1ASTMStandards:2D883TerminologyRelatingtoPlasticsD3878TerminologyforCompositeMaterialsD5229/D5229MTestMethodforMoistureAbsorptionProp-ertiesandEquilibriumConditioningofPolymerMatrixCompositeMaterialsE122PracticeforCalculatingSampleSizetoEstimate,WithSpecifiedPrecision,theAverageforaCharacteristicofaLotorProcessE171PracticeforConditioningandTestingFlexibleBarrierPackagingE177PracticeforUseofthe...
