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【英文标准名称】:StandardTestMethodforShearStrengthofJointsofAdvancedCeramicsatAmbientTemperature
【原文标准名称】:室温下高级陶瓷接缝的抗剪切强度的标准试验方法
【标准号】:ASTMC1469-2000(2005)
【标准状态】:现行
【国别】:
【发布日期】:2000
【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】:C28.07
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:高级工业陶瓷;剪切强度;连接;环境温度;陶瓷;试验方法
【英文主题词】:asymmetricalfour-pointtest;ceramicjoint;ceramics;shearforce;shearstrength
【摘要】:Advancedceramicsarecandidatematerialsforstructuralapplicationsrequiringhighdegreesofwearandcorrosionresistance,oftenatelevatedtemperatures.Jointsareproducedtoenhancetheperformanceandapplicabilityofmaterials.Whilethejointsbetweensimilarmaterialsaregenerallymadeformanufacturingcomplexpartsandrepairingcomponents,thoseinvolvingdissimilarmaterialsusuallyareproducedtoexploittheuniquepropertiesofeachconstituentinthenewcomponent.Dependingonthejoiningprocess,thejointregionmaybetheweakestpartofthecomponent.Sinceundermixed-modeandshearloading,theloadtransferacrossthejointrequiresreasonableshearstrength,itisimportantthatthequalityandintegrityofjointunderin-planeshearforcesbequantified.Shearstrengthdataarealsoneededtomonitorthedevelopmentofnewandimprovedjoiningtechniques.Sheartestsprovideinformationonthestrengthanddeformationofmaterialsundershearstresses.Thistestmethodmaybeusedformaterialdevelopment,materialcomparison,qualityassurance,characterization,anddesigndatageneration.Forqualitycontrolpurposes,resultsderivedfromstandardizedsheartestspecimensmaybeconsideredindicativeoftheresponseofthematerialfromwhichtheyweretakenforgivenprimaryprocessingconditionsandpost-processingheattreatments.1.1Thistestmethodcoversthedeterminationofshearstrengthofjointsinadvancedceramicsatambienttemperature.Testspecimengeometries,testspecimenfabricationmethods,testingmodes(thatis,forceordisplacementcontrol),testingrates(thatis,forceordisplacementrate),datacollection,andreportingproceduresareaddressed.1.2Thistestmethodisusedtomeasureshearstrengthofceramicjointsintestspecimensextractedfromlargerjoinedpiecesbymachining.Testspecimensfabricatedinthiswayarenotexpectedtowarpduetotherelaxationofresidualstressesbutareexpectedtobemuchstraighterandmoreuniformdimensionallythanbutt-jointedtestspecimenspreparedbyjoiningtwohalves,whicharenotrecommended.Inaddition,thistestmethodisintendedforjoints,whichhaveeitherloworintermediatestrengthswithrespecttothesubstratematerialtobejoined.Jointswithhighstrengthsshouldnotbetestedbythistestmethodbecauseofthehighprobabilityofinvalidtestsresultingfromfracturesinitiatingatthereactionpointsratherthaninthejoint.Determinationoftheshearstrengthofjointsusingthistestmethodisappropriateparticularlyforadvancedceramicmatrixcompositematerialsbutalsomaybeusefulformonolithicadvancedceramicmaterials.1.3ValuesexpressedinthistestmethodareinaccordancewiththeInternationalSystemofUnits(SI)andPracticeIEEE/ASTMSI10.1.4Thistestmethoddoesnotpurporttoaddressthesafetyproblemsassociatedwithitsuse.Itistheresponsibilityoftheuserofthistestmethodtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.Specificprecautionarystatementsarenotedin8.1and8.2.
【中国标准分类号】:Q32
【国际标准分类号】:81_060_30
【页数】:8P.;A4
【正文语种】: