ASTM C1424-2004 室温下高级陶瓷持久抗压强度的标准试验方法

作者:标准资料网 时间:2024-05-09 12:12:57  浏览:9528   来源:标准资料网

【英文标准名称】:StandardTestMethodforMonotonicCompressiveStrengthofAdvancedCeramicsatAmbientTemperature
【原文标准名称】:室温下高级陶瓷持久抗压强度的标准试验方法
【标准号】:ASTMC1424-2004
【标准状态】:现行
【国别】:
【发布日期】:2004
【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】:C28.01
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:陶瓷;压缩试验;抗压强度;高级工业陶瓷;环境温度;试验方法
【英文主题词】:advancedceramic;compressiontest;compressivestrength
【摘要】:Thistestmethodmaybeusedformaterialdevelopment,materialcomparison,qualityassurance,characterization,anddesigndatageneration.Generally,resistancetocompressionisthemeasureofthegreateststrengthofamonolithicadvancedceramic.Ideally,ceramicsshouldbecompressivelystressedinuse,althoughengineeringapplicationsmayfrequentlyintroducetensilestressesinthecomponent.Nonetheless,compressivebehaviorisanimportantaspectofmechanicalpropertiesandperformance.Althoughtensilestrengthdistributionsofceramicsareprobabilisticandcanbedescribedbyaweakestlinkfailuretheory,suchdescriptionshavebeenshowntobeinapplicabletocompressivestrengthdistributionsinatleastonestudy(1).3However,theneedtotestastatisticallysignificantnumberofcompressivetestspecimensisnotobviated.Therefore,asufficientnumberoftestspecimensateachtestingconditionisrequiredforstatisticalanalysisanddesign.Compressiontestsprovideinformationonthestrengthanddeformationofmaterialsunderuniaxialcompressivestresses.Uniformstressstatesarerequiredtoeffectivelyevaluateanynonlinearstress-strainbehaviorwhichmaydevelopastheresultofcumulativedamageprocesses(forexample,microcracking)whichmaybeinfluencedbytestingmode,testingrate,processingorcompositionaleffects,microstructure,orenvironmentalinfluences.Theresultsofcompressiontestsoftestspecimensfabricatedtostandardizeddimensionsfromaparticularmaterialorselectedportionsofapart,orboth,maynottotallyrepresentthestrengthanddeformationpropertiesintheentire,full-sizeproductoritsin-servicebehaviorindifferentenvironments.Forqualitycontrolpurposes,resultsderivedfromstandardizedcompressivetestspecimensmaybeconsideredindicativeoftheresponseofthematerialfromwhichtheyweretakenforgivenprimaryprocessingconditionsandpost-processingheattreatments.1.1Thistestmethodcoversthedeterminationofcompressivestrengthincludingstress-strainbehavior,undermonotonicuniaxialloadingofadvancedceramicsatambienttemperature.Thistestmethodisrestrictedtospecfictestspecimengeometries.Inaddition,testspecimenfabricationmethods,testingmodes(loadordisplacement),testingrates(loadrate,stressrate,displacementrate,orstrainrate),allowablebending,anddatacollectionandreportingproceduresareaddressed.Compressivestrengthasusedinthistestmethodreferstothecompressivestrengthobtainedundermonotonicuniaxialloading.Monotonicloadingreferstoatestconductedataconstantrateinacontinuousfashion,withnoreversalsfromtestinitiationtofinalfracture.1.2Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.1.3Thistestmethodisintendedprimarilyforusewithadvancedceramicsthatmacroscopicallyexhibitisotropic,homogeneous,continuousbehavior.Whilethistestmethodisintendedforuseonmonolithicadvancedceramics,certainwhisker-orparticle-reinforcedcompositeceramicsaswellascertaindiscontinuousfiber-reinforcedcompositeceramicsmayalsomeetthesemacroscopicbehaviorassumptions.Generally,continuousfiberceramiccomposites(CFCCs)donotmacroscopicallyexhibitisotropic,homogeneous,continuousbehavior,andapplicationofthistestmethodtothesematerialsisnotrecommended.1.4ValuesexpressedinthistestmethodareinaccordancewiththeInternationalSystemofUnits(SI)andPracticeE380.
【中国标准分类号】:Q32
【国际标准分类号】:81_060_30
【页数】:13P.;A4
【正文语种】: