【英文标准名称】:Advancedtechnicalceramics-Mechanicalpropertiesofmonolithicceramicsatroomtemperature-Part2:DeterminationofYoung'smodulus,shearmodulusandPoisson'sratio;EnglishversionofDINEN843-2:2007-03
【原文标准名称】:高级工业陶瓷.室温单块陶瓷的机械特征.第2部分:杨氏模量、剪切模量和泊松比测定
【标准号】:DINEN843-2-2007
【标准状态】:现行
【国别】:德国
【发布日期】:2007-03
【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】:高级工业陶瓷;环境温度;恒定的;定义;测定;弹性模量;环境试验;硬度测量;材料试验;机械性能;机械试验;整体材料;泊松比;剪切模量;试验报告;试验;杨氏模量
【英文主题词】:
【摘要】:ThispartofEN843specifiesmethodsfordeterminingtheelasticmoduli,specificallyYoung'smodulus,shearmodulusandPoisson'sratio,ofadvancedmonolithictechnicalceramicsatroomtemperature.ThisEuropeanStandardprescribesfouralternativemethodsfordeterminingsomeorallofthesethreeparameters:AThedeterminationofYoung'smodulusbystaticflexureofathinbeaminthree-orfour-pointflexure.BThedeterminationofYoung'smodulusbyforcedlongitudinalresonance,orYoung'smodulus,shearmodulusandPoisson'sratiobyforcedflexuralandtorsionalresonance,ofathinbeam.CThedeterminationofYoung'smodulus,shearmodulusandPoisson'sratiofromthetime-of-flightofanultrasonicpulse.DThedeterminationofYoung'smodulusfromthefundamentalnaturalfrequencyofastruckbar(impulseexcitationmethod).???Allthetestmethodsassumetheuseofhomogeneoustestpiecesoflinearelasticmaterials.NOTE1Notallceramicmaterialsareequallyandlinearlyelasticintensionandcompression,suchassomeporousmaterialsandsomepiezoelectricmaterials.WiththeexceptionofMethodC,thetestassumesthatthetestpiecehasisotropicelasticproperties.MethodCmaybeusedtodeterminethedegreeofanisotropybytestingindifferentorientations.NOTE2Anultrasonicmethodfordealingwithanisotropicmaterials(ceramicmatrixcomposites)canbefoundinENV14186[1].AnalternativetoMethodDforisotropicmaterialsusingdisctestpiecesisgiveninAnnexA.NOTE3AthighporositylevelsallofthemethodsexceptMethodCmaybecomeinappropriate.Themethodsareonlysuitableforamaximumgrainsize(seeEN623-3),excludingdeliberatelyaddedwhiskers,oflessthan10%oftheminimumdimensionofthetestpiece.NOTE4ThedifferentmethodsgiveninthisEuropeanStandardcanproduceslightlydifferentresultsonthesamematerialowingtodifferencesbetweenquasi-isothermalquasi-staticandquasi-adiabaticdynamicconditions.Inaddition,thecalculationroutinesfordifferentmethodshavedifferentoriginsanddifferentpotentialuncertaintieswhichhavenotbeenrigorouslyevaluatedinproducingthisEuropeanStandard.SomeinformationisgiveninAnnexB(seealsoreference[2]).
【中国标准分类号】:Q32
【国际标准分类号】:81_060_30
【页数】:41P.;A4
【正文语种】:英语