Designation:D6742/D6742M−17StandardPracticeforFilled-HoleTensionandCompressionTestingofPolymerMatrixCompositeLaminates1ThisstandardisissuedunderthefixeddesignationD6742/D6742M;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thispracticeprovidesinstructionsformodifyingopen-holetensionandcompressiontestmethodstodeterminefilled-holetensileandcompressivestrengths.Thecompositematerialformsarelimitedtocontinuous-fiberreinforcedpoly-mermatrixcompositesinwhichthelaminateisbothsymmetricandbalancedwithrespecttothetestdirection.Therangeofacceptabletestlaminatesandthicknessesaredescribedin8.2.1.1.2ThispracticesupplementsTestMethodsD5766/D5766M(fortensiontesting)andD6484/D6484M(forcom-pressiontesting)withprovisionsfortestingspecimensthatcontainaclose-tolerancefastenerorpininstalledinthehole.Severalimportanttestspecimenparameters(forexample,fastenerselection,fastenerinstallationmethod,andfastenerholetolerance)arenotmandatedbythispractice;however,repeatableresultsrequirethattheseparametersbespecifiedandreported.1.3ThevaluesstatedineitherSIunitsorinch-poundunitsaretoberegardedseparatelyasstandard.Thevaluesstatedineachsystemmaynotbeexactequivalents;therefore,eachsystemshallbeusedindependentlyoftheother.Combiningvaluesfromthetwosystemsmayresultinnon-conformancewiththestandard.1.3.1Withinthetexttheinch-poundunitsareshowninbrackets.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafety,health,environmentalpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.1.5Thisinternationalstandardwasdevelopedinaccor-dancewithinternationallyrecognizedprinciplesonstandard-izationestablishedintheDecisiononPrinciplesfortheDevelopmentofInternationalStandards,Gu...
