ASTM_D_6264_-_D_6264M_-_17.pdf

Designation:D6264/D6264M17Standard Test Method forMeasuring the Damage Resistance of a Fiber-ReinforcedPolymer-Matrix Composite to a Concentrated Quasi-StaticIndentation Force1This standard is issued under the fixed designation D6264/D6264M;the number immediately following the designation indicates theyear of original adoption or,in the case of revision,the year of last revision.A number in parentheses indicates the year of lastreapproval.A superscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope1.1 This test method determines the damage resistance ofmultidirectional polymer matrix composite laminated platessubjected to a concentrated indentation force(Fig.1).Proce-dures are specified for determining the damage resistance for atest specimen supported over a circular opening and for arigidly-backed test specimen.The composite material formsare limited to continuous-fiber reinforced polymer matrixcomposites,with the range of acceptable test laminates andthicknesses defined in 8.2.This test method may prove usefulfor other types and classes of composite materials.1.1.1 Instructions for modifying these procedures to deter-mine damage resistance properties of sandwich constructionsare provided in Practice D7766/D7766M.1.2 A flat,square composite plate is subjected to an out-of-plane,concentrated force by slowly pressing a hemisphericalindenter into the surface.The damage resistance is quantifiedin terms of a critical contact force to cause a specific size andtype of damage in the specimen.1.3 The test method may be used to screen materials fordamage resistance,or to inflict damage into a specimen forsubsequent damage tolerance testing.The indented plate can besubsequently tested in accordance with Test Method D7137/D7137M to measure residual strength properties.Drop-weightimpact per Test Method D7136/D7136M may be used as analternate method of creating damage from an out-of-planeforce and measuring damage resistance properties.1.4 The damage resistance properties generated by this testmethod are highly dependent upon several factors,whichinclude specimen geometry,layup,indenter geometry,force,and boundary conditions.Thus,results are generally notscalable to other configurations,and are particular to thecombination of geometric and physical conditions tested.1.5 The values stated in either SI units or inch-pound unitsare to be regarded separately as standard.The values stated ineach system may not be exact equivalents;therefore,eachsystem shall be used independently of the other.Combiningvalues from the two systems may result in non-conformancewith the standard.1.5.1 Within the text the inch-pound units are shown inbrackets.1.6 This standard does not purport to address all of thesafety concerns,if any,associated with its use.It is theresponsibility of the user of this standard to establish appro-priate safety,health,and environmental practices and deter-mine the applicability of regulatory limitations prior to use.1.7 This international standard was developed in accor-dance with internationally recognized principles on standard-ization established in the Decision on Principles for theDevelopment of International Standards,Guides and Recom-mendations issued by the World Trade Organization TechnicalBarriers to Trade(TBT)Committee.2.Referenced Documents2.1 ASTM Standards:2D792 Test Methods for Density and Specific Gravity(Rela-tive Density)of Plastics by DisplacementD883 Terminology Relating to PlasticsD3171 Test Methods for Constituent Content of CompositeMaterialsD3878 Terminology for Composite MaterialsD5229/D5229M Test Method for MoistureAbsorption Prop-erties and Equilibrium Conditioning of Polymer MatrixComposite MaterialsD5687/D5687M Guide for Preparation of Flat CompositePanels with Processing Guidelines for Specimen Prepara-tionD7136/D7136M Test Method for Measuring the DamageResistance of a Fiber-Reinforced Polymer Matrix Com-posite to a Drop-Weight Impact Event1This test method is under the jurisdiction of ASTM Committee D30 onComposite Materials and is the direct responsibility of Subcommittee D30.05 onStructural Test Methods.Current edition approved Oct.15,2017.Published October 2017.Originallyapproved in 1998.Last previous edition approved in 2012 as D6264 12.DOI:10.1520/D6264_D6264M-17.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United StatesThis international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for theDevelopment of International Standards,Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade(TBT)Committee.1 D7137/D7137M Test Method for Co