【英文标准名称】:Sinteredmetalmaterials;sint-testingprocedures;part7:determinationofsoftmagneticproperties
【原文标准名称】:烧结金属材料.烧结试验程序.第7部分:软磁性测定
【标准号】:DIN30911-7-1990
【标准状态】:现行
【国别】:德国
【发布日期】:1990-10
【实施或试行日期】:
【发布单位】:德国标准化学会(DIN)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:磁学;磁测量;粉末冶金;烧结产品;烧结材料;试验;模制件;材料;烧结金属;软磁的;试验标准;铁磁的;材料的磁性能;特性;试验设备;金属;元部件
【英文主题词】:magneticmeasurement;components;sintermaterials;sinteredmetals;testing;softmagnetic;teststandards;ferromagnetic;magneticpropertiesofmaterials;metals;testequipment;mouldedparts;magnetism;powde
【摘要】:Thestandardappliestoallsinteredpartsofferromagneticmaterialsandspecifiesthedeterminationofthesoftmagneticproperties.
【中国标准分类号】:H72
【国际标准分类号】:77_160
【页数】:2P;A4
【正文语种】:德语


【英文标准名称】:StandardTestMethodforBearing/BypassInteractionResponseofPolymerMatrixCompositeLaminatesUsing2-FastenerSpecimens
【原文标准名称】:承受/旁通用2种紧固样品的聚合物基质复合叠层碾压的交感响应的标准试验方法
【标准号】:ASTMD7248/D7248M-2008
【标准状态】:现行
【国别】:美国
【发布日期】:2008
【实施或试行日期】:
【发布单位】:美国材料与试验协会(US-ASTM)
【起草单位】:D30.05
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:bearing/bypassproperties;bearingstrength;bypassstrength;compositematerials;Laminates(aerospace);Polymers(composites)
【摘要】:Thistestmethodisdesignedtoproducebearing/bypassinteractionresponsedataforresearchanddevelopment,andforstructuraldesignandanalysis.Thestandardconfigurationforeachprocedureisveryspecificandisintendedasabaselineconfigurationfordevelopingstructuraldesigndata.ProcedureA,thebypass/highbearingdouble-shearconfigurationisrecommendedfordevelopingdataforspecificapplicationswhichinvolvedoubleshearjoints.ProcedureB,thebypass/highbearingsingle-shearconfigurationismoreusefulintheevaluationoftypicaljointconfigurations.Thespecimenmaybetestedineitheranunstabilized(nosupportfixture)orstabilizedconfiguration.Theunstabilizedconfigurationisintendedfortensileloadingandthestabilizedconfigurationisintendedforcompressiveloading.Theseconfigurations,particularlythestabilizedconfiguration,havebeenextensivelyusedinthedevelopmentofdesignallowablesdata.Thevariantsofeitherprocedureprovideflexibilityintheconductofthetest,allowingadaptationofthetestsetuptoaspecificapplication.However,theflexibilityoftestparametersallowedbythevariantsmakesmeaningfulcomparisonbetweendatasetsdifficultifthedatasetswerenottestedusingidenticaltestparameters.ProcedureC,thebypass/lowbearingdouble-shearhardpointconfigurationisrecommendedfordeterminingtheeffectoflowbearingstresslevelsonbypassstrength.Whileasimilarsingle-shearconfigurationcouldbetested,thereisinsufficientexperiencewithasingle-shearconfigurationtorecommenditsuseatthistime.Generalfactorsthatinfluencethemechanicalresponseofcompositelaminatesandshouldthereforebereportedincludethefollowing:material,methodsofmaterialpreparationandlay-up,specimenstackingsequence,specimenpreparation,specimenconditioning,environmentoftesting,specimenalignmentandgripping,speedoftesting,timeheldattesttemperature,voidcontent,andvolumepercentreinforcement.Specificfactorsthatinfluencethebearing/bypassinteractionresponseofcompositelaminatesandshouldthereforebereportedincludenotonlytheloadingmethod(eitherProcedureAorB)andloadingtype(tensionorcompression)butthefollowing(forbothprocedures):edgedistanceratio,widthtodiameterratio,diametertothicknessratio,fastenertorque,fastenerorpinmaterial,fastenerorpinclearance;and(forProcedureBonly)countersinkangleanddepthofcountersink,typeofgrommet(ifused),typeofmatingmaterial,andtypeofsupportfixture(ifused).Properties,inthetestdirection,whichmaybeobtainedfromthistestmethodincludethefollowing:Filledholetensilebearing/bypassstrength.Filledholecompressivebearing/bypassstrength.Bearingstress/bypassstraincurve.1.1Thistestmethoddeterminestheuniaxialbearing/bypassinteractionresponseofmulti-directionalpolymermatrixcompositelaminatesreinforcedbyhigh-modulusfibersbyeitherdouble-sheartensileloading(ProceduresAandC)orsingle-sheartensileorcompressiveloading(ProcedureB)ofatwo-fastenerspecimen.Thescopeofthistestmethodislimitedtonetsection(bypass)failuremodes.Standardspecimenconfigurationsusingfixedvaluesoftestparametersaredescribedforeachprocedure.Anumberoftestparametersmaybevariedwithinthescopeofthestandard,providedthattheparametersarefullydocumentedinthetestreport.Thecompositematerialformsarelimitedtocontinuous-fiberordiscontinuous-fiber(tapeorfabric,orboth)reinforcedcompositesforwhichthelaminateisbalancedandsymmetricwithrespecttothetestdirection.Therangeofacceptabletest......
【中国标准分类号】:G31
【国际标准分类号】:59_100_01
【页数】:30P.;A4
【正文语种】:英语