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【英文标准名称】:StandardPracticeforMeasuringThicknessbyManualUltrasonicPulse-EchoContactMethod
【原文标准名称】:手动超声波脉冲-回声接触法测定厚度的标准实施规程
【标准号】:ASTME797/E797M-2010
【标准状态】:现行
【国别】:美国
【发布日期】:2010
【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】:E07.06
【标准类型】:(Practice)
【标准水平】:()
【中文主题词】:
【英文主题词】:contactexamination;nondestructivetesting;pulse-echo;thicknessmeasurement;ultrasonics;Thickness;Ultrasonictesting
【摘要】:Thetechniquesdescribedprovideindirectmeasurementofthicknessofsectionsofmaterialsnotexceedingtemperaturesof93x00B0;C(200x00B0;F).Measurementsaremadefromonesideoftheobject,withoutrequiringaccesstotherearsurface.Ultrasonicthicknessmeasurementsareusedextensivelyonbasicshapesandproductsofmanymaterials,onprecisionmachinedparts,andtodeterminewallthinninginprocessequipmentcausedbycorrosionanderosion.Recommendationsfordeterminingthecapabilitiesandlimitationsofultrasonicthicknessgagesforspecificapplicationscanbefoundinthecitedreferences.,1.1Thispracticeprovidesguidelinesformeasuringthethicknessofmaterialsusingthecontactpulse-echomethodattemperaturesnottoexceed93x00B0;C(200x00B0;F).1.2Thispracticeisapplicabletoanymaterialinwhichultrasonicwaveswillpropagateataconstantvelocitythroughoutthepart,andfromwhichbackreflectionscanbeobtainedandresolved.1.3Units8212;ThevaluesstatedineitherSIunitsorinch-poundunitsaretoberegardedseparatelyasstandard.Thevaluesstatedineachsystemmaynotbeexactequivalents;therefore,eachsystemshallbeusedindependentlyoftheother.Combiningvaluesfromthetwosystemsmayresultinnon-conformancewiththestandard1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:A50
【国际标准分类号】:17_040_20
【页数】:8P.;A4
【正文语种】:英语