Designation:D3552−12StandardTestMethodforTensilePropertiesofFiberReinforcedMetalMatrixComposites1ThisstandardisissuedunderthefixeddesignationD3552;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.ThisstandardhasbeenapprovedforusebyagenciesoftheU.S.DepartmentofDefense.1.Scope1.1Thistestmethodcoversthedeterminationofthetensilepropertiesofmetalmatrixcompositesreinforcedbycontinuousanddiscontinuoushigh-modulusfibers.Nontraditionalmetalmatrixcompositesasstatedin1.1.6alsoarecoveredinthistestmethod.Thistestmethodappliestospecimensloadedinauniaxialmannertestedinlaboratoryairateitherroomtem-peratureorelevatedtemperatures.Thetypesofmetalmatrixcompositescoveredare:1.1.1Unidirectional—Anyfiber-reinforcedcompositewithallfibersalignedinasingledirection.Continuousordiscon-tinuousreinforcingfibers,longitudinalandtransverseproper-ties.1.1.20°/90°BalancedCrossply—Alaminatecomposedofonly0and90°plies.Thisisnotnecessarilysymmetric,continuous,ordiscontinuousreinforcingfibers.1.1.3AngleplyLaminate—Anybalancedlaminateconsist-ingof6thetaplieswherethetaisanacuteanglewithrespecttoareferencedirection.Continuousreinforcingfiberswithout0°reinforcingfibers(thatis,(645)ns,(630)ns,andsoforth).1.1.4Quasi-IsotropicLaminate—Abalancedandsymmetriclaminateforwhichaconstitutivepropertyofinterest,atagivenpoint,displaysisotropicbehaviorintheplaneofthelaminate.Continuousreinforcingfiberswith0°reinforcingfibers(thatis,(0/645/90)s,(0/630)s,andsoforth).1.1.5UnorientedandRandomDiscontinuousFibers.1.1.6DirectionallySolidifiedEutecticComposites.1.2Thetechnicalcontentofthisstandardhasbeenstablesince1996withoutsignificantobjectionfromitsstakeholders.Asthereislimitedtechnicalsupportforthemaintenanceofthisstandard,changessincethatdatehavebeenlimitedtoitemsrequiredtoretainconsistencywithotherASTMD30Com...
