小径薄壁无缝钢管的接触法超声波探伤

(,730050)INSPECTIONOFTHETHIN2WALLSEAMLESSSTEELPIPESWITHSMALLDIAMETERBYULTRASONICCONTACTTECHNIQUEZHOUYu2xing(LanzhouLSMachineryEquipmentCo.,Ltd,LanzhouGanshu730050,China):TG115.28:B:100026656(2003)102054120342mm4mm,12Gr1MoV,,,,,11.1,JB4730199412480mm,2mm1.250mm,015mm60V,2[1]2.1K,,K,K,(1),K,:20022122301K2K2K,K=tgsin1-R=rR(1)=sin-1rRRr,42mm4mm1452510200310NDTVol.25No.10Oct.2003©1995-2004TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.54,K1.4,2.5MHz,K=12.22.2.1,,,,,:(1),(2)3mm,(3),,3K2.2.2,K2,K1.4,K2=63.3,49,54.5,43.5,4943.5:(1),OC(4)(2)49-43.5=515,CA=htg5.5hAO3mm,B,4,,4K,,,,,14mm,,,2.32.3.1,5,,,12mm,2mm52.3.2,,A,BC(6)=180BCR(2)6AB=AO2+BO2-2AOBOcos(3)AO/sin=AB/sin=arcsinAOsinAB(4)1BC=13mm(2),(3)(4)=54,K=1.4,245:©1995-2004TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.3CTS226,,2,,,4,V80%4,34dB,,,,,,,,60,,,7,(7),33mm,1.5mm,5(1),K,,K,K1(2)14mm,8mm12mm,5MHz,(3),,(4),,(5),,:[1].[Z].:,1995.(540)2808mm,3mm;5.5mm,1.6mm2406.5mm,1.6mm;4.25mm,1mm,,,,4,,;;;;0.1mm,,,,,,:[1].()[Z].:,1983.345:©1995-2004TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.