【英文标准名称】:Advancedtechnicalceramics-Mechanicalpropertiesofceramiccompositesatambienttemperature-Evaluationoftheresistancetocrackpropagationbynotchsensitivitytesting;EnglishversionofDINEN13234:2007-01
【原文标准名称】:高级工业陶瓷.室温下陶瓷混合料的机械性能.通过切口灵敏度试验评估耐裂纹扩展性
【标准号】:DINEN13234-2007
【标准状态】:现行
【国别】:德国
【发布日期】:2007-01
【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;陶瓷;复合材料;抗裂纹扩张;防裂纹扩展;定义;评定;断裂韧性;材料试验;机械性能;切口敏感性;有凹槽的;特性;耐力;试验设备;试验报告;试样;试验
【英文主题词】:
【摘要】:ThisEuropeanStandarddescribesamethodfortheclassificationofceramicmatrixcomposite(CMC)materialswithrespecttotheirsensitivitytocrackpropagationusingtensiletestsonnotchedspecimenswithdifferentnotchdepths.Twoclassesofceramicmatrixcompositematerialscanbedistinguished:materialswhosestrengthissensitivetothepresenceofnotchesandmaterialswhosestrengthisnotaffected.Forsensitivematerials,thisEuropeanStandarddefinesamethodfordeterminingequivalentfracturetoughness.Theparameter,K,isdefinedasthefracturetoughnessofahomogeneousmaterialwhichpresentsthesamesensitivitytocrackpropagationastheceramicmatrixcompositematerialwhichisbeingconsidered.ThedefinitionoftheKparameteroffersthepossibilitytocompareceramicmatrixcompositematerialswithothermaterialswithrespecttosensitivitytocrackpropagation.Fornotchinsensitivematerials,theconceptofKdoesnotapply.ThisEuropeanStandardappliestoallceramicmatrixcompositeswithacontinuousfibrereinforcement,unifirectional(1D),bidirectional(2D),andtridirectional(xD,where2