ASTM-D-7136

Designation:D7136/D7136M–05e1StandardTestMethodforMeasuringtheDamageResistanceofaFiber-ReinforcedPolymerMatrixCompositetoaDrop-WeightImpactEvent1ThisstandardisissuedunderthefixeddesignationD7136/D7136M;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(e)indicatesaneditorialchangesincethelastrevisionorreapproval.e1NOTE—Fig.8waseditoriallycorrectedinMay2005.1.Scope1.1Thistestmethodcoversthedamageresistanceofmultidirectionalpolymermatrixcompositelaminatedplatessubjectedtoadrop-weightimpactevent.Thecompositematerialformsarelimitedtocontinuous-fiberreinforcedpoly-mermatrixcomposites,withtherangeofacceptabletestlaminatesandthicknessesdefinedin8.2.1.2Aflat,rectangularcompositeplateissubjectedtoanout-of-plane,concentratedimpactusingadrop-weightdevicewithahemisphericalimpactor.Thepotentialenergyofthedrop-weight,asdefinedbythemassanddropheightoftheimpactor,isspecifiedpriortotest.Equipmentandproceduresareprovidedforoptionalmeasurementofcontactforceandvelocityduringtheimpactevent.Thedamageresistanceisquantifiedintermsoftheresultingsizeandtypeofdamageinthespecimen.1.3Thetestmethodmaybeusedtoscreenmaterialsfordamageresistance,ortoinflictdamageintoaspecimenforsubsequentdamagetolerancetesting.WhentheimpactedplateistestedinaccordancewithTestMethodD7137/D7137M,theoveralltestsequenceiscommonlyreferredtoastheCompres-sionAfterImpact(CAI)method.Quasi-staticindentationperTestMethodD6264maybeusedasanalternatemethodofcreatingdamagefromanout-of-planeforceandmeasuringdamageresistanceproperties.1.4Thedamageresistancepropertiesgeneratedbythistestmethodarehighlydependentuponseveralfactors,whichincludespecimengeometry,layup,impactorgeometry,impac-tormass,impactforce,impactenergy,andboundarycondi-tions.Thus,resultsaregenerallynotscalabletootherconfigu-rations,andareparticulartothecombinationofgeometricandphysicalconditionstested.1.5ThevaluesstatedineitherSIunitsorinch-poundunitsaretoberegardedseparatelyasstandard.Withinthetexttheinch-poundunitsareshowninbrackets.Thevaluesstatedineachsystemarenotexactequivalents;therefore,eachsystemmustbeusedindependentlyoftheother.Combiningvaluesfromthetwosystemsmayresultinnonconformancewiththestandard.1.6Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.2.ReferencedDocuments2.1ASTMStandards:2D792TestMethodsforDensityandSpecificGravity(Rela-tiveDensity)ofPlasticsbyDisplacementD883TerminologyRelatingtoPlasticsD3171TestMethodsforConstituentContentofCompositeMaterialsD3763TestMethodforHighSpeedPuncturePropertiesofPlasticsusingLoadandDisplacementSensorsD3878TerminologyforCompositeMaterialsD5229/D5229MTestMethodforMoistureAbsorptionPropertiesandEquilibriumConditioningofPolymerMa-trixCompositeLaminatesD5687/D5687MGuideforPreparationofFlatCompositePanelswithProcessingGuidelinesforSpecimenPrepara-tionD6264TestMethodforMeasuringtheDamageResistanceofaFiber-ReinforcedPolymer-MatrixCompositetoaConcentratedQuasi-StaticIndentationForceD7137/D7137MTestMethodforCompressiveResidualStrengthPropertiesofDamagedPolymerMatrixCompos-itePlatesE4PracticesforForceVerificationofTestingMachinesE6TerminologyRelatingtoMethodsofMechanicalTest-ingE18TestMethodsforRockwellHardnessandRockwellSuperficialHardnessofMetallicMaterials1ThistestmethodisunderthejurisdictionofASTMCommitteeD30onCompositeMaterialsandisthedirectresponsibilityofSubcommitteeD30.05onStructuralTestMethods.CurrenteditionapprovedApril1,2005.PublishedApril2005.2ForreferencedASTMstandards,visittheASTMwebsite,@astm.org.ForAnnualBookofASTMStandardsvolumeinformation,refertothestandard’sDocumentSummarypageontheASTMwebsite.1Copyright©ASTMInternational,100BarrHarborDrive,POBoxC700,WestConshohocken,PA19428-2959,UnitedStates.CopyrightbyASTMInt'l(allrightsreserved);ReproductionauthorizedperLicenseAgreementwithKatheHooper(ASTMIHSAccount);TueMay3115:51:58EDT2005CopyrightASTMInternationalReproducedbyIHSunderlicensewithASTMNotforResaleNoreproductionornetworkingpermittedwithoutlicensefromIHS--`,,`,`,-`-`,,`,,`,`,,`---E122PracticeforCalculationofSampleSizetoEstimate,withaSpecifiedTolerableError,theAverageofCharac-teristicforaLotorProcessE177PracticeforUseoftheTermsPrecisionandBiasinASTMTestMethodsE456TerminologyRelatingtoQualityandStatisticsE1309GuideforIdentificationofFiber-ReinforcedPoly-merMatrixCompositeMaterialsinDatabasesE1434GuideforRecordingMechanicalTestDataofFiber-ReinforcedCompositeMaterialsinDatabasesE1471GuideforIdentificationofFibers,FillersandCoreMaterialsinComputerizedMaterialPropertyDatabases2.2MilitaryStandards:MIL-HDBK-17-3FCompositeMaterialsHandbook,Vol-ume3—PolymerMatrixCompositesMaterialsUsage,DesignandAnalysis3MIL-HDBK-728/1NondestructiveTesting4MIL-HDBK-731ANondestructiveTestingMethodsofCompositeMaterial