augelength.14.4.2Ifanypartofthefracturetakesplaceoutsideofthemiddlehalfofthegaugelengthorinapunchedorscribedmarkwithinthereducedsection,theelongationvalueobtainedmaynotberepresentativeofthematerial.Iftheelongationsomeasuredmeetstheminimumrequirementsspecified,nofurthertestingisindicated,butiftheelongationislessthantheminimumrequirements,discardthetestandretest.14.4.3Automatedtensiletestingmethodsusingextensom-etersallowforthemeasurementofelongationinamethoddescribedbelow.ElongationmaybemeasuredandreportedFIG.9Stress-StrainDiagramforDeterminationofYieldStrengtheitherthisway,orasinthemethoddescribedabove,fittingthebytheOffsetMethodbrokenendstogether.Eitherresultisvalid.10ASTMInternational版权所有,100BarrHarbor,WestConshohocken,Pennsylvania,19428,USA由上海市标准化研究院(SIS)根据ASTM授权协议进行销售上海市长乐路1217号邮编:200031