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,,1)(,215004):48159mm,JG/T3034:;;:TG115.28+5:A:100026656(2001)0620243203ULTRASONICTESTINGANDCLASSIFICATIONOFTHEWELDSINSTEELSPATIALGRIDSTRUCTURESZHOUZai2qi,XIALiang,LIUSong2ping(SuzhouNuclearPowerResearchInstitute,StatePowerCorp.,Suzhou215004,China)Abstract:Theultrasonictechniquefortheinspectionoftheweldsinsteelspatialgridstructuresbyspecially2designedprobeandtestpiece,andtheclassificationmethodfortheacceptanceofdefectiveweldsweredescribed.Theproblemsintheexamina2tionoftheweldsinthetubularpartswithdiametersof48159mmweresolved.AndafoundationwaslaidforthepreparationofstandardJG/T3034ultrasonictestingoftheweldsindoublelayergridtruss.Keywords:Steelspatialgridstructure;Ultrasonictesting;Weld,,,,,,,,CSK2IC,:20002062051),215004,410810mm48159mm;JG/T3034.2-1996(200012),,,153+1531,(),12,,,,,()()34223620016NDTVol.23No.6June2001©1995-2004TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.11.2.2,,,,,40%50%,,,,,,CO2:20%,,;,20%,,,,,2,,,,,70(K3),,3mm20mm-18dB(CSK2IC),6mm(),5MHz,1mm(4mm4mm3mm5mm)(5254),(68);,,,,3.5mm6mm,,,,20%,,2,8mm,GB113458mm,,,,,;,,,;,,442:©1995-2004TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.,,JG/T3034.1JG/T3034.2,,,3.525mm48mm;425mm120mm76mm,,76mm,,,,,,,,,,13,,,;,,,,,2,,,,1,DAC,UF1),22)/3,10mmDACUF,3/4,15mm;8%8mm,DAC,UF,12%8mm,DAC,UF,10%UF,DAC;9.2,9.3;10%;8mm,15%;8mm,20%,;DAC,2/3,10mmDAC,3/4,15mm,15%DAC,,20mm,20%DAC9.2,9.3:1)UFRBJ212),,mm2mm//////A21625/2.030/2.015/2.53.015/1.020/1.010/1.52.0B21630/2.530/3.025/3.03.518/1.220/2.015/2.02.5A22825/1.530/2.525/2.04.015/0.818/1.515/1.03.0B22830/2.545/4.030/2.54.520/1.525/2.520/1.53.5(253)542:©1995-2004TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.,,3[1,6]:(1)(2)(3)(4)(5)(6)()(7)()(8)(9)()()(10),,,,(11)(12)4,,,,D/A5,,,:[1]PozarDavidM.Microwaveengineering[M].NewYork:Addison2WesleyPublishingCompany,1990.[2]LiaoSamuelY.EngineeringApplicationsofElectromag2netictheory[M].NewYork:WestPublishingCompa2ny,1988.[3]NasserQaddoumi.Near2fieldmicrowavetechniquesfordeterminingcrackopeningofstressbold[A].Interna2tionalQNDEConference[C].SaltLake,USA:1998.[4]ZoughiR.Microwavenondestructivetheoriesandappli2cations[A].InternationalAdvancesinNondestructiveTesting(Vol.15)[M].GordonandBreachSciencePub2lishers,1990.[5]AuldBA.Theoryofferromagneticresonanceprobesforsurfacecracksinmetals[R].Stanford:StanfordUniver2sity,1978.[6]BoisKarlJ.MicrowavenoninvasivedetectionofgroutinMasory[A].InternationalQNDEConference[C].SaltLake,USA:1998.[7]HuberCH.Modelingofsurfacehairlinecrackdetectioninmetalsundercoatingsusingopen2endedrectangularwaveguides[J].IEEETransactiononMicrowaveTheoryandTechnique,1997,45(11).(245),,,,,,JG/T3034,[1,2]:[1].[A].[C].:,1992.370-373.[2].[A].[C].:,1994.723-727.352:©1995-2004TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.