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【英文标准名称】:StandardPracticeforUltrasonicPulse-EchoStraight-BeamContactTesting
【原文标准名称】:超声波脉冲回波直探测试标准实施规程
【标准号】:ASTME114-2010
【标准状态】:现行
【国别】:
【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】:触点;检测;无损测试;脉冲回拨;直波;超声波;无损评估;脉冲回波超声波测试;反射法;直波超声测试;超声检验
【英文主题词】:contact;examination;nondestructivetesting;pulse-echo;straight-beam;ultrasonic;Nondestructiveevaluation(NDE);Pulse-echoultrasonictesting;Reflectionmethod;Straight-beamultrasonictesting;Ultrasonictesting
【摘要】:Thispracticeemploystheuseofnormal-incident,orstraightbeam,longitudinalwaveultrasoundforthedetectionandevaluationofdiscontinuitiesinmaterialsrequiringvolumetricexamination.Althoughnotallrequirementsofthispracticecanbeapplieduniversallytoallinspectionsituationsandmaterials,itdoesprovidethebasisforestablishingcontractualcriteriabetweensuppliersandpurchasersofmaterialsforperformingcontactlongitudinalwavepulse-echoexaminationandmaybeusedasaguideforwritingdetailedproceduresforparticularapplications.Typesofinformationthatmaybeobtainedfromthepulsed-echostraight-beampracticeareasfollows:Apparentdiscontinuitysize(seeNote1)bycomparisonofthesignalamplitudesfromthetestpiecetotheamplitudesobtainedfromareferencestandard.DepthlocationofdiscontinuitiesbycalibratingthehorizontalscaleoftheA-scandisplay.Materialpropertiesasindicatedbytherelativesoundattenuationorvelocitychangesofcompareditems.Theextentofbondandunbond(orfusionandlackoffusion)betweentwoultrasonicconductingmaterialsifgeometryandmaterialspermit.Note18212;Thetermx201C;apparentx201D;isemphasizedsincetruesizedependsonorientation,composition,andgeometryofthediscontinuityandequipmentlimitations.1.1Thispracticecoversultrasonicexaminationofmaterialsbythepulse-echomethodusingstraight-beamlongitudinalwavesintroducedbydirectcontactofthesearchunitwiththematerialbeingexamined.1.2Thispracticeshallbeapplicabletodevelopmentofanexaminationprocedureagreeduponbytheusersofthedocument.1.3Thevaluesstatedininch-poundunitsaretoberegardedasstandard.ThevaluesgiveninparenthesesaremathematicalconversionstoSIunitsthatareprovidedforinformationonlyandarenotconsideredstandard.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:N77
【国际标准分类号】:19_100
【页数】:5P.;A4
【正文语种】: