1、Designation:D6264/D6264M12Standard 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
2、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 ofmul
3、tidirectional 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 limit
4、ed 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 p
5、roperties 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
6、 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 re
7、sidual 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 fact
8、ors,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
9、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 inbra
10、ckets.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 and health practices and determine the applica-bility of regulatory limitations prior to use.2.Referenced
11、 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 Moi
12、stureAbsorption 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
13、 Com-posite to a Drop-Weight Impact EventD7137/D7137M Test Method for Compressive ResidualStrength Properties of Damaged Polymer Matrix Compos-ite PlatesD7766/D7766M Practice for Damage Resistance Testing ofSandwich Constructions1This test method is under the jurisdiction of ASTM Committee D30 onCom
14、posite Materials and is the direct responsibility of Subcommittee D30.05 onStructural Test Methods.Current edition approved April 1,2012.Published May 2012.Originallyapproved in 1998.Last previous edition approved in 2007 as D6264 07.DOI:10.1520/D6264_D6264M-12.2For referenced ASTM standards,visit t
15、he 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 St
16、ates1 E4 Practices for Force Verification of Testing MachinesE6 Terminology Relating to Methods of Mechanical TestingE18 Test Methods for Rockwell Hardness of Metallic Ma-terialsE122 Practice for Calculating Sample Size to Estimate,WithSpecified Precision,the Average for a Characteristic of aLot or ProcessE177 Practice for Use of the Terms Precision and Bias inASTM Test MethodsE456 Terminology Relating to Quality and StatisticsE1309 GuideforIdentificationofFiber-ReinforcedPolymer-Matrix Composit
