NASM 1312-1997 紧固件试验方法

STD.AIA/NASNASM1322-ENGL19770318743L150537L1700IINASM131229August1997ADOPTIONNOTICENASM1312,“FastenerTestMethods”wasadoptedon29August1997forusebytheDepartmentofDefénse@OD).ProposedchangesbyDoDactivitiesmustbesubmittedtotheDoDAdoptingActivity:Commander,NavalAirWarfareCenterAircraftDivision,Code4141OOB120-3Highway547,Lakehurst,NJ08733-5100.DoDactivitiesmayobtaincopiesofthisstandardhmtheStandardizationDocumentOrderDesk,700RobbinsAvenue,Building4D,Philadelphia,PA19111-5094.TheprivatesectorandotherGovernmentagenciesmaypurchasecopiesfiomtheAefospaceIndustriesAssociation,1250EyeStreetNW,Washington,DC20005.NASM1312ShouldbeusedinsteadofMIL-STJ”lm,whichwascancelledon29August1997.Custodians:Navy-ASAirForce-11hy-AVPreparing.activity:Navy-AS(ProjectNo.53GPL0285)ReviewActivities:Navy-AS,SHArmy-AV,ARAirFOXW-11DLA-ISCOPYRIGHTAerospaceIndustriesAssociationofAmerica,Inc.(AIA[NAS])LicensedbyInformationHandlingServicesCOPYRIGHTAerospaceIndustriesAssociationofAmerica,Inc.(AIA[NAS])LicensedbyInformationHandlingServicesNATIONALAEROSPACESTANDARD@COPYRIGHT1997AEROSPACEINDUSTRIESASSOCIATIONOFAMERICA,INCALLRIGHTSRESERVEDNASM1312STANDARDPRACTICEFASTENERTESTMETHODSTHEINITIALRELEASEOFTHISDOCUMENTSUPERSEDESMIL-STD-1312BDESIGNATIONSFORTHESETESTMETHODSREMAINMIL-STD-1312FSC53GPSHEET1OF45APPROVALDATEAUGUST1997USEOFORRELIANCEUPONTHISDOCUMENTORANYAEROSPACESTANDARDISENTIRELYVOLUNTARYAIADOESNOTQUALIFYSUPPLIERSORCERTIFYCONFORMANCEOFITEMSPRODUCEDUNDERAEROSPACESTANDARDS.AIAMAKESNOREPRESENTATIONORCLAIMRESPECTING(1)THESUITABILITYOFITEMSFORANYPARTICULARAPPLICATIONOR(2)THEEXISTENCEOFORAPPLICABILITYTHERETOOFPATENTORTRADEMARKRIGHTS.COPYRIGHTAerospaceIndustriesAssociationofAmerica,Inc.(AIA[NAS])LicensedbyInformationHandlingServicesCOPYRIGHTAerospaceIndustriesAssociationofAmerica,Inc.(AIA[NAS])LicensedbyInformationHandlingServicesNATIONALAEROSPACESTANDARD@COPYRIGHT1997AEROSPACEINDUSTRIESASSOCIATIONOFAMERICA,MCALLRIGHTSRESERVEDNASM1312FOREWORDf’1.Background.Theselectionoffastenersinthedesignandconstructionphaseofweaponssystemsandequipmentandtheanalysisoffastenersusedthereinforparameters,suchassuitability,standardization,andsimplificationrequirestheevaluationandcorrelationoftestdataandcritefia.Inevaluatingthesefbnctions,ithasbecomeincreasinglyevhentthatthedataandcriteriareceivedfromprimecontractors,fastenerproducers,privatelaboratories,militarydocuments,andmilitarylaboratoriescannotbeadequatelycorrelated.Thechiefreasonforthisistheabsenceofunifiedstandardsprescribingtestmethods,procedures,fixtures,dataanalysis,anddatapresentation.Thisdisparityencouragesandoftenrequiresduplicationoftestingandreducesreliabilityofweaponssystemsandequipments,therebyimpairingoperationsinvolvingengineeringcontrol,designmaintenance,qualityassurance,standardization,andlogisticssimplification.Tocorrectthissituationitwasestablishedthataunifiedsetoftestmethodsandproceduresisrequiredtoserveasabasicengineeringtoolforobtainingandpresentingengineeringdata.Asaresult,thisdocumentwasdevelopedandpreparedtosatisQthisvitalneed.Thisstandarddelineatesstandardtestmethods,procedures,conditions,fixtures,andmethodsofrecording,analyzingandpresentingtestdata.Thepurposeoftheresultingtestdataistodeterminethecapabilityoffastenerstowithstandthevariousenvironmentalandmechanicalconditionsencounteredwhenusedinmilitaryweaponssystems.2.Benefits.Manybenefitsaretobeexpectedbyunifiedstandardtestsforfasteners.Thefollowingisalistofbenefitsthatcanbeexpectedtoaccruefromusingthisstandard.a.Availabilityoftestingtechniquesandcriteriaqecessaryforthedesignanddevelopmentofincreasinglysuperiorstructuralfasteners.Inthepast,whenanewfastenerwasneededtosolveaproblem,thenecessarytestprocedureshadtobedevelopedandwritten;also,thenecessaryfixtureshadtobedesigned.Thisalwaysimposeddelays,additionalexpenses,variationsintestmethodsandintestresults.b.Increasingincidencesofcorrelationamongfadtenertestdataanddesignengineeringtechniquesanddesigncriteriaforweaponssystemsandequipments.Asnewsystemsaredesignedtoachievehigherperformanceforagivenvolumeandmassofmaterial,itisessentialthatdesigndataforstructuraljoints(alargeportionofwhichisobtainedbytestingfasteners)maintainaiclosecorrelationwithengineeringtechniquesanddesigncriteria.Whereweightisofimportance,suchasinaircraftstructures,suchclosecorrelationwillprovideasubstantialreductioninweight.SHEET2APPROVALDATEAUGUST1997USEOFORRELIANCEUPONTHISDOCUMENTORANYAEROSPACESTANDARDISENTIRELYVOLUNTARYAIADOESNOTQUALIFYSUPPLIERSORCERTIFYCONFORMANCEOFITEMSPRODUCEDUNDERAEROSPACESTANDARDS,AIAMAKESNOREPRESENTATIONORCLAIMRESPECTING(I)THESUITABILITYOFITEMSFORANYPARTICULARAPPLICATIONOR(2)THEEXISTENCEOFORAPPLICABILITYTIIERETOOFPATENTORTRADEMARKRIGHTS.COPYRIGHTAerospaceIndustriesAssociationofAmerica,Inc.(AIA[NAS])LicensedbyInformationHandlingServicesCOPYRIGHTAerospaceIndustriesAssociationofAmerica,Inc.(AIA[NAS])LicensedbyInformationHandlingServicesNATIONALAEROSPACESTANDARDQCOPYRIOHT1997AEROSPACEINDUSTRIESASSOCIATIONOFAMERICA,MCALLRIGHTSRESERVEDNÀSM1312c.Availabilityoftestingtechniquesandcriterianecessarytomaintainconsi