超声表面SH波的特性评价－国外超声检测新动态

SH(,214028):SHSH:;;;:TG115.28+5:A:100026656(2001)0220064206EVALUATIONONACOUSTICCHARACTERISTICSOFSURFACESHWAVES:NEWTRENDOFUTTECHNIQUEABROADLIYan(WuxiBoilerWorks,Wuxi214028,China)Abstract:TheacousticfieldcharacteristicsandrelatedparametersdeterminationofsurfaceSHwavesareout2lined.ThefactorsinfluencesurfaceSHwavetestingsensitivityareevaluated.TheintentionistotouchoffthepopularapplicationofsurfaceSHwavetoindustrialtestingthroughoutthecountryandthedevelopmentofnewul2trasonictestingtechnique.Keywords:Acousticpressuredistribution;Sensitivity;Soundcharacteristic;Ultrasonictesting1SH[1],,,SV,,SHSV,,,AÉAAÊ,,,AsAË,,AÉ,AÊ,AËSH,SHSV,,90,SH:1999208223,SH,;,,SHSV12SH[2]SH(5Z1010SN2Z1010SN)()8mm,12.224.9,10,30,35,40,45,55,60,70,75,80902SH,SH3SH[3]3.1SH4623220012NDTVol.23No.2Feb.2001©1995-2004TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.(a)(b)1SHSV2SH,SHN(3),NdF,FnLn,Yn,Yp,$D,nN$Ln,Ln=(Y2n+d2)1ö2(1)Yn=Yp+Y0+$Dõn(2)$D=D01NcosA(3)$Ln=$D(N-n)sinA(4)FPF=P01KLnõexp[-j(kLn+k$Ln)]dD(5)P0k=2PKk=2PKKK(5),SH43SH4SH56:SH©1995-2004TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.,,3.2SH,,,(5MHz),();(2MHz),()10mm,Yp20mm,4SH4.15,d1h,M,Ln,m=(Y2n+d2m)1ö2(6)Yn=Yp+Y0+$Dõn(7)dm=d1+$hõm(8)Pm=P01KLn,mõexp[-j(kLn,m+k$Ln)]dD(9)PFP0=1DPmP02dh(10),d1=0,5SH4.2(10),6,1,,(2MHz,Yp50mm);,(5MHz,Yp10mm)6SH16mmd1hd1hd1h110.51.0210.52.0310.53.0121.01.0221.02.0321.03.0131.51.0231.52.0331.53.0142.01.0242.02.0342.03.05[4]5.1SV,SHIIW(CSK2IA)25mm(7),,25mm,E0,,E1E52,4,6,8,10,SH125mm;E1E42.5,5,7.5,10,SH100mm,,SH,7(125mm)5.2SHSH,SH,,8,HeSH,,66:SH©1995-2004TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.8SHHcHeHc,SHHeHc,6SH,SV,SH,SHSH6.1SH()()9A,BQHQL,SH,,,;,,(10),4dB,67dB,10dB,,6.2,,9SH()1.SHN22B2.SHN13S3.SHN134.SHN955.SHN21A,,6.3SH10,SH,3min,3dB(30%),7dB(56%),,10SH6.4Ry(200mm48mm25mm)4mm4mm,5kg,,1111SHA5C105SHA90B5Z55SHA90C2Z55SHA90D2Z1010SHA90(1)Ry,5MHz,;2MHz,(2)5MHz,Ry3111Lm,Ry,Ry111Lm(3),76:SH©1995-2004TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.(4)Ry,7SHSH,,12,=150mm48mm,(6,9,12,19,25,36),1mm20mm1mm20,40,60,80100mm13SH:12SH(1)Y,Y,(2)5MHz,T12mm;2MHz,T19mm,,(3)Y40mm,;Y=100mm,T12mm,8SH14,SH(85),;,;30,,SH,,9SH13SH14SHA2Z55SHA90B5Z55SHA90C5C105SHA90D2Z1010SHA904mm4mm1mm,SH,15,6mm,1.51.76mm10(1)SH86:SH©1995-2004TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.15SH4mm4mm1mm,,,(2)SH(3),(2MHz,Y=50mm);,(5MHz,Y=10mm)(4)SHSH(5)SH(6)SH,(7)4mm4mm1mm1.51.7SH,:(1),(2),SV22(3),(4),SH,,:[1].SH[J].,1998,47(6):403-410.[2],,.SHSHƓ}[J].,1996,45(9):688-696.[3],.SH[J].,1996,45(2):136-144.[4],,.SH[J].,1996,45(5):343-347.(61)[2]LiuFahong,DuYujin.Designandtestofstereoscop2icX2radiographicobservingandmeasuringinstrument[J].IntJourPresVesPiping,1990,44(3):353-364.[3]AH.[M].:,1983.139-150.[4].[M].:,1985.20-38.[5].[M].:,1987.75-80.[6].[M].:,1989.55-70.[7].[D].:,1998.96:SH©1995-2004TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.