ASTM D 6264-1998

Standard Test Method for Measuring Damage Resistance of Fiber-Reinforced Polymer-Matrix Composite to Concentrated Quasi-Static Indentation Force

Designation:D6264–98(Reapproved2004)

StandardTestMethodfor

MeasuringDamageResistanceofFiber-ReinforcedPolymer-MatrixCompositetoConcentratedQuasi-StaticIndentationForce1

Thisstandardisissuedunderthe xeddesignationD6264;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(e)indicatesaneditorialchangesincethelastrevisionorreapproval.

1.Scope

1.1Aquasi-staticindentation(QSI)testmethodisusedtoobtainquantitativemeasurementsofthedamageresistanceofacontinuous- ber-reinforcedcompositematerialtoaconcen-tratedindentationforce(Fig.1).Theindentationforceisappliedtothespecimenbyslowlypressingahemisphericalindenterintothesurface.Proceduresarespeci edfordeter-miningthedamageresistanceforasimplysupportedtestspecimenandforarigidlybackedtestspecimen.Thedamageresistanceisquanti edintermsofacriticalcontactforceassociatedwithasingleeventorsequenceofeventstocauseaspeci csizeandtypeofdamageinthespecimen.Thesetestsmaybeusedtoscreenmaterialsfordamageresistanceortoin ictdamageintoaspecimenforsubsequentdamagetoler-ancetesting.Thistestmethodislimitedtousewithcompositesconsistingoflayersofunidirectional bersorlayersoffabric.Thistestmethodmayproveusefulforothertypesandclassesofcompositematerials.Certaininterferences,however,havebeennoted(see6.7).

1.2ThevaluesstatedinSIunitsaretoberegardedasstandard.Thevaluesgiveninparenthesesareprovidedforinformationpurposesonly.

1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.2.ReferencedDocuments2.1ASTMStandards:2

D883TerminologyRelatingtoPlastics

FIG.1Quasi-StaticIndentationTest

ThisstandardisunderthejurisdictionofASTMCommitteeD30onCompositeMaterialsandisthedirectresponsibilityofSubcommitteeD30.05onStructuralTestMethods.

CurrenteditionapprovedMar.1,stpreviouseditionapprovedin1998asD6264–98.2

ForreferencedASTMstandards,visittheASTMwebsite,,orcontactASTMCustomerServiceatservice@.ForAnnualBookofASTMStandardsvolumeinformation,refertothestandard’sDocumentSummarypageontheASTM

website.

1

D2734TestMethodsforVoidContentofReinforcedPlas-tics

D3171TestMethodforConstituentContentofCompositeMaterials

D3878TerminologyforCompositeMaterials

D5229/D5229MTestMethodforMoistureAbsorptionPropertiesandEquilibriumConditioningofPolymerMa-trixCompositeMaterials

D5687/D5687MGuideforPreparationofFlatCompositePanelsWithProcessingGuidelinesforSpecimenPrepara-tion

E4PracticesforForceVeri cationofTestingMachinesE6TerminologyRelatingtoMethodsofMechanicalTest-ing

E18TestMethodsforRockwellHardnessandRockwellSuper cialHardnessofMetallicMaterials

E122PracticeforCalculatingSampleSizetoEstimate,WithaSpeci edTolerableError,theAverageforaCharacteristicofaLotorProcess

3.Terminology

3.1De nitions—TerminologyD3878de nestermsrelatingtohigh-modulus bersandtheircomposites.TerminologyD883de nestermsrelatingtoplastics.TerminologyE6de nestermsrelatingtomechanicaltesting.Intheeventofa

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