Designation:D5449/D5449M−16StandardTestMethodforTransverseCompressivePropertiesofHoopWoundPolymerMatrixCompositeCylinders1ThisstandardisissuedunderthefixeddesignationD5449/D5449M;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.ThisstandardhasbeenapprovedforusebyagenciesoftheU.S.DepartmentofDefense.1.Scope1.1Thistestmethoddeterminesthetransversecompressivepropertiesofwoundpolymermatrixcompositesreinforcedbyhigh-moduluscontinuousfibers.Itdescribestestingofhoopwound(90°)cylindersinaxialcompressionfordeterminationoftransversecompressiveproperties.1.2Thetechnicalcontentofthisstandardhasbeenstablesince1993withoutsignificantobjectionfromitsstakeholders.Asthereislimitedtechnicalsupportforthemaintenanceofthisstandard,changessincethatdatehavebeenlimitedtoitemsrequiredtoretainconsistencywithotherASTMD30Commit-teestandards,includingeditorialchangesandincorporationofupdatedguidanceonspecimenpreconditioningandenviron-mentaltesting.Thestandard,therefore,shouldnotbeconsid-eredtoincludeanysignificantchangesinapproachandpracticesince1993.Futuremaintenanceofthestandardwillonlybeinresponsetospecificrequestsandperformedonlyastechnicalsupportallows.1.3ThevaluesstatedineitherSIunitsorinch-poundunitsaretoberegardedseparatelyasstandard.Thevaluesstatedineachsystemarenotexactequivalents;therefore,eachsystemmustbeusedindependentlyoftheother.Combiningvaluesfromthetwosystemsmayresultinnonconformancewiththestandard.1.3.1Withinthetexttheinch-poundunitsareshowninbrackets.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.2.ReferencedDocuments2.1ASTMStandards:2D792TestMethodsforDensityandSpecificGravit...
