NASM 1312-21-1997 Fastener Test Methods, Method 21

NASMl312-2129August1997ADOPTIONNOTICENASM1312-21,“FastenerTestMethodsMethod21ShearJointFatigueConstantAmplitude”wasadoptedon29August1997forusebytheDepartmentofDefense(DoD).ProposedchangesbyDoDactivitiesmustbesubmittedtotheDoDAdoptingActivity:Commander,NavalAirWarfàreCenterAircraftDivision,Code414100B120-3Highway547,Lakehurst,NJ08733-5100.DoDactivitiesmayobtaincopiesofthisstandardfiomtheStandardizationDocumentOrderDesk,700RobbinsAvenue,Building4D,Philadelphia,PA19111-5094.TheprivatesectorandotherGovernmentagenciesmaypurchasecopiesfiomtheAerospaceIndustriesAssociation,1250EyeStreetW,Washington,DC20005.NASM1312-21ShouldbeusedinsteadofMI”-1312-21,whichwascancelledon29August1997.Custodians:Navy-ASAirForce-11Army-AVPreparingactivity:Navy-AS(ProjectNo.53GP-0285-21)ReviewActivities:Navy-AS,SHAirForce-11Army-AV,ARDLA-ISCOPYRIGHTAerospaceIndustriesAssociationofAmerica,Inc.(AIA[NAS])LicensedbyInformationHandlingServicesCOPYRIGHTAerospaceIndustriesAssociationofAmerica,Inc.(AIA[NAS])LicensedbyInformationHandlingServicesNATIONALAEROSPACESTANDARDi@COPYRIGHT1997AEROSPACEINDUSTRIESASSOCIATIONOFAMERICA,MCALLRIGHTSRESERVED..1INASM1312-21I''STd$RD0..PRACTICEFASTENERTESTMETHODSMETHOD21SHEARJOINTFATIGUECONSTANTAMPLITUDEAerospaceIndustriesAssociatimTHEINITIALRELEASEOFTHIS'DOCUMENTSUPERSEDESMIL-STD-1312-21DESIGNATIONFORTHISTESTMETHODREMAINSMIL-STD-1312-2II.FSC53GPSHEET1OF22APPROVALDATEAUGUST1997USEOFORRELIANCEUPONTHISDOCUMENTORANYAEROSPACESTANDARDISENTIRELYVOLUNTARYAIADOESNOTQUALIFYSUPPLIERSORCERTIFYCONFORMANCEOFITEMSPRODUCEDUNDERAEROSPACESTANDARDS.AIAMAKESNOREPRESENTATIONORCLAIMRESPECTMG(1)THESUITABILITYOFITEMSFORANYPARTICULARAPPLICATIONOR(2)THEEXISTENCEOFORAPPLICABILITYTHERETOOFPATENTORTRADEMARKRIGHTS.COPYRIGHTAerospaceIndustriesAssociationofAmerica,Inc.(AIA[NAS])LicensedbyInformationHandlingServicesCOPYRIGHTAerospaceIndustriesAssociationofAmerica,Inc.(AIA[NAS])LicensedbyInformationHandlingServicesNATIONALAEROSPACESTANDARDi@COPYRIGHT1997AEROSPACEINDUSTRIESASSOCIATIONOFAMERICA,INCALLRIGHTSRESERVED,jNASM1312-21FOREWORDThisstandardsetsforthastandardtestprocedurefordeterminingtheshearjointfatigueoffastenersatroomtemperature.iISHEET2APPROVALDATEAUGUST1997USEOFORRELIANCEUPONTHISDOCUMENTORANYAEROSPACESTANDARDISENTIRELYVOLUNTARYAIADOESNOTQUALJFYSUPPLIERSORCERTIFYCONFORMANCEOFmMSPRODUCEDUNDERAEROSPACESTANDARDS.AIAMAKESNOREPRESENTATIONORCLAIMRESPECTING(1)THESUITABILITYOFITEMSFORANYPARTICULARAPPLICATIONOR(2)THEEXISTENCEOFORAPPLICABILITYTHERETOOFPATENTORTRADEMARKRIGHTS.COPYRIGHTAerospaceIndustriesAssociationofAmerica,Inc.(AIA[NAS])LicensedbyInformationHandlingServicesCOPYRIGHTAerospaceIndustriesAssociationofAmerica,Inc.(AIA[NAS])LicensedbyInformationHandlingServices~~~~~~~~~~~....._____.....................STD-AIA/NASNASML3L2-21-ENGL199703187q30505207845DParamaph1.1.12.2.12.1.12.23.4.4.14.1.14.1.1.14.1.1.1.14.1.24.1.2.14.1.2.1.34.1.2.34.1.2.44.1.34.24.2.24.2.34.2.44.2.54.2.5.14.2.5.24.2.5.34.2.5.44.2.64.2.6.14.2.6.2NATIONALAEROSPACESTANDARD.@COPYRIGHT1997AEROSPACEINDUSTRIESASSOCIATIONOFAMERICAMCALLRIGHTSRESERVED'NASM1312-21.I..TABLEOFCONTENTSSheetSCOPE.........................................................................................................5Appllcablllty..................................................................................................5...REERENCEDDOCUMENTS...................................................................5Governmentdocuments.................................................................................5Specifications.standardsandhandbooks.......................................................5Otherpublications.........................................................................................5DEFINITIONS.............................................................................................6GENERALREQUIREMENTS.....................................................................6Testapparatus...............................................................................................6Fatiguetestmachineloadingsystem.............................................................6Calibration....................................................................................................6Elasticcalibration..........................................................................................6Statlcalignment9Equipment.....................................................................................................9Alignmentcells..............................................................................................9Procedure.....................................................................................................9Alignmentexample........................................................................................9Fixtures.,.......................................................................................................12Testspecimens...........................................................................................12Methodofloading..............