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【英文标准名称】:StandardPracticeforMeasuringtheChangeinLengthofFastenersUsingtheUltrasonicPulse-EchoTechnique
【原文标准名称】:使用超声脉冲回波技术测量紧固件长度变化的标准操作规程
【标准号】:ASTME1685-2000(2006)
【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】:E28.13
【标准类型】:(Practice)
【标准水平】:()
【中文主题词】:
【英文主题词】:bolts;change-in-lengthmeasurements;clampingforce;fasteners;residualstressmeasurements;ultrasonics
【摘要】:Thetechniquesdescribedprovidefortheindirectmeasurementofchangeinlengthofafastener.Suchmeasurementsaremadefromoneendofthespecimenwithoutrequiringaccesstotherearsurface.Theequipmentisfieldportableandshouldbeusedinthemannerprescribedbythemanufacturer.Commonusesincludemonitoringchangesinlengthoffastenersandasatoolforindustrialqualitycontrol.Currentapplicationsincludefastenersusedinturbines,petrochemicalpressurevessels,aircraft,automotivemanufacturing,generalboltingwithinthenuclearindustry,structuralsteelconnections,laboratorytesting,andsoforth.1.1Thispracticecoversaprocedureformeasuringchangesinlengthofthreadedfastenersusingconventionalultrasonicpulse-echobolt-measuringinstrumentationwhichhasbeenproperlycalibrated.1.2Thisprocedureisnormallyintendedformetalbolting0.25in.(6.4mm)ormoreinnominaldiameterwitheffectivelength-to-diameterratiosof2:1orgreater.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:J13
【国际标准分类号】:17_040_30;21_060_01
【页数】:4P.;A4
【正文语种】: