ASTM_D_5961_-_D_5961M_-_17.pdf

Designation:D5961/D5961M17Standard Test Method forBearing Response of Polymer Matrix Composite Laminates1This standard is issued under the fixed designation D5961/D5961M;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 covers the bearing response of pinnedor fastened joints using multi-directional polymer matrixcomposite laminates reinforced by high-modulus fibers bydouble-shear tensile loading(ProcedureA),single-shear tensileor compressive loading of a two-piece specimen(ProcedureB),single-shear tensile loading of a one-piece specimen(Procedure C),or double-shear compressive loading(Proce-dure D).Standard specimen configurations using fixed valuesof test parameters are described for each procedure.However,when fully documented in the test report,a number of testparameters may be optionally varied.The composite materialforms are limited to continuous-fiber or discontinuous-fiber(tape or fabric,or both)reinforced composites for which thelaminate is balanced and symmetric with respect to the testdirection.The range of acceptable test laminates and thick-nesses are described in 8.2.1.1.2 This test method is consistent with the recommendationsof MIL-HDBK-17,which describes the desirable attributes ofa bearing response test method.1.3 The multi-fastener test configurations described in thistest method are similar to those used by industry to investigatethe bypass portion of the bearing bypass interaction responsefor bolted joints,where the specimen may produce either abearing failure mode or a bypass failure mode.Note that thescope of this test method is limited to bearing and fastenerfailure modes.Use Test Method D7248/D7248M for by-passtesting.1.4 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.1.4.1 Within the text the inch-pound units are shown inbrackets.1.5 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.1.6 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 PlasticsD953 Test Method for Bearing Strength of PlasticsD2584 Test Method for Ignition Loss of Cured ReinforcedResinsD2734 Test Methods for Void Content of Reinforced PlasticsD3171 Test Methods for Constituent Content of CompositeMaterialsD3410/D3410M Test Method for Compressive Properties ofPolymer Matrix Composite Materials with UnsupportedGage Section by Shear LoadingD3878 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-tionD7248/D7248M Test Method for Bearing/Bypass Interac-tion Response of Polymer Matrix Composite LaminatesUsing 2-Fastener SpecimensE4 Practices for Force Verification of Testing MachinesE6 Terminology Relating to Methods of Mechanical TestingE83 Practice for Verification and Classification of Exten-someter Systems1This 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 Aug.1,2017.Published September 2017.Originallyapproved in 1996.Last previous edition approved in 2013 as D5961/D5961M 13.DOI:10.1520/D5961_D5961M-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 Organiza