【英文标准名称】:StandardPracticeforUltrasonicTestingUsingElectromagneticAcousticTransducer(EMAT)Techniques
【原文标准名称】:用电磁声换能器(EMAT)技术的超声波测试用标准实用规程
【标准号】:ASTME1816-2007
【标准状态】:现行
【国别】:
【发布日期】:2007
【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】:材料测试;无损检验;超声波测试
【英文主题词】:electricallyconductive;electromagneticacoustictransducer;ferromagnetic;flawdetection;nondestructivetesting;NDTofweldments;thicknessmeasurements;ultrasonicexamination
【摘要】:1.1Thispracticecoversproceduresfortheuseofelectromagneticacoustictransducers(EMATs)forspecificultrasonicexaminationapplications.RecommendationsaregivenforspecificapplicationsforusingEMATtechniquestodetectflawsthroughbothsurfaceandvolumetricexaminationsaswellastomeasurethickness.1.2Theseproceduresrecommendtechnicaldetailsandguidelinesforthereliableandreproducibleultrasonicdetectionofflawsandthicknessmeasurementsusingelectromagneticacoustictransducersforboththepulsingandreceivingofultrasonicwaves.TheEMATtechniquesdescribedhereincanbeusedasabasisforassessingtheserviceabilityofvariouscomponentsnondestructively,aswellasforprocesscontrolinmanufacturing.1.3Theseprocedurescovernoncontacttechniquesforcouplingultrasonicenergyintomaterialsthroughtheuseofelectromagneticfields.Surface,Lamb,longitudinal,andshearwavemodesarediscussed.1.4TheseproceduresareintendedtodescribespecificEMATapplications.TheseproceduresareintendedforapplicationsinwhichtheuserhasdeterminedthattheuseofEMATtechniquescanoffersubstantialbenefitsoverconventionalpiezoelectricsearchunits.ItisnotintendedthatEMATtechniquesshouldbeusedinapplicationsinwhichconventionaltechniquesandapplicationsoffersuperiorbenefits(refertoGuideE1774).1.5Theseproceduresareapplicabletoanymaterialinwhichacousticwavescanbeintroducedelectromagnetically.Thisincludesanymaterialthatiseitherelectricallyconductiveorferromagnetic.1.6TheproceduresoutlinedinthispracticeaddressprovenEMATtechniquesforspecificapplications;theydonotpurporttoaddresstheonlyvariationorallvariationsofEMATtechniquestoaddressthegivenapplications.Latitudeinapplicationtechniquesisofferedwhereoptionsareconsideredappropriate.1.7Thevaluesstatedininch-poundunitsaretoberegardedasthestandard.Thevaluesgiveninparenthesesareforinformationonly.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:A42
【国际标准分类号】:77_040_20
【页数】:10P.;A4
【正文语种】: