汽轮机叶根超声波探伤

(,730050),TK,ULTRASONICINSPECTIONOFTURBINEBLADEROOTSSongShaohe(GansuElectricPowerTestandResearchInstitute,Lanzhou)AbstractUltrasonicinspectionmethodforturbinebladerootsisdescribedincludingthedouble2crystallongitudinalwaveconvexprobeforforkedbladerootsandthemini2probewithbigKvalueforT2shapedbladerootsdeveloped.Practicalapplicationsaregiven.KeywordsUltrasonictestingProbeTurbinebladeroot5070,,70,,11.1(),,,23mm(1),1.22,12,,,,,;,,,1.33,,,,R2050mm,(4),3,,00322720007NDTVol.22No.7July2000©1995-2004TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.34,1.4()TT,(5),,,52,2.1,,(),,,,,,,,,,,R35mmR2050mmR35mm35mm,2.22.2.1(6),,r=PzPi=Z2-Z1Z2+Z1rr=0.9991100%PzPiZ1Z1=45106kgöm2sZ2Z2=0.00004106kgöm2s6Q1Q2ö()2.2.2,,,,,(F),72.38,18mm15mm12mm,5mm5mm,2.55P,355mm,20110mm20mm1mm9,110mm2mm10103:©1995-2004TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.789103,YGS2ÉYGS2Ê3.1YGS-ÉYGS2É(11),,,3.2YGS-ÊYGS2Ê(12),,,25mm,1mm;1112110mm,2mm;50mm,,425,50,100200MW12,41879109137914109,,1314(306)203:©1995-2004TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.6CFöSiC22,AEAE,,,,,,,AE,AE,AE,,,,,,,AE3,,,,AE,,,,,,,,1..:,1985.2MummeryPM,DerbyB,ScrubyCB.ActaMetallMater,1983,41(5):1431-14453YasushiS,AkinoriO.NationalAerospaceLab.Tokyo:1988.4FarrowGJ,HughesJD,DarbyMI.JPhysD:ApplPhys,1994,27:644-6515.SiCöAl.,1989.:1999205211(302)5KTT,K,8mm12mm20mm,5P,5mm5mm,K2.83,,,1516T15,1612MW2mm:1998209203603:©1995-2004TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.