【英文标准名称】:StandardGuideforDetectionandEvaluationofDiscontinuitiesbyContactPulse-EchoStraight-BeamUltrasonicMethods
【原文标准名称】:用触点脉冲回声直束法探测和评价不连续性的标准指南
【标准号】:ASTME1901-2008
【标准状态】:现行
【国别】:美国
【发布日期】:2008
【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】:(Guide)
【标准水平】:()
【中文主题词】:
【英文主题词】:contact;evaluation;examination;procedure;pulse-echo;straight-beam;ultrasonic;Discontinuities--metals/alloys;Pulse-echoultrasonictesting;Ultrasonictesting
【摘要】:Thisguideprovidesproceduresfortheapplicationofcontactstraight-beamexaminationforthedetectionandquantitativeevaluationofdiscontinuitiesinmaterials.Althoughnotallrequirementsofthisguidecanbeapplieduniversallytoallinspections,situations,andmaterials,itdoesprovidebasisforestablishingcontractualcriteriabetweentheusers,andmaybeusedasageneralguideforpreparingdetailedspecificationsforaparticularapplication.Thisguideisdirectedtowardstheevaluationofdiscontinuitiesdetectablewiththebeamnormaltotheentrysurface.Ifdiscontinuitiesorotherorientationsareofconcern,alternatescanningtechniquesarerequired.1.1Thisguidecoversproceduresforthecontactultrasonicexaminationofbulkmaterialsorpartsbytransmittingpulsedultrasonicwavesintothematerialandobservingtheindicationsofreflectedwaves.Thisguidecoversonlyexaminationsinwhichonesearchunitisusedasbothtransmitterandreceiver(pulse-echo).Thisguideincludesgeneralrequirementsandproceduresthatmaybeusedfordetectingdiscontinuities,locatingdepthanddistancefromapointofreferenceandformakingarelativeorapproximateevaluationofthesizeofdiscontinuitiesascomparedtoareferencestandard.1.2ThisguidecomplementsPracticeE114byprovidingmoredetailedproceduresfortheselectionandcalibrationoftheinspectionsystemandforevaluationoftheindicationsobtained.1.3Thevaluesstatedininch-poundunitsaretoberegardedasstandard.ThevaluesgiveninparenthesesaremathematicalconversionstoSIunitsthatareprovidedforinformationonlyandarenotconsideredstandard.1.4Thisguidedoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisguidetoestablishtheappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:A42
【国际标准分类号】:
【页数】:7P.;A4
【正文语种】:英语