超声检测中的波形识别与缺陷定性

,(,464000)IDENTIFICATIONOFWAVEFORMSANDDEFECTSINULTRASONICINSPECTIONWUDe2xin,YANGXiao2lin(TheFirstAeronauticalInstituteoftheChinesePLAAirForce,Xinyang464000,China):TG115.28:B:100026656(2002)0720312203,,A,,,,,,11.1,,,,,()(),,[1]1.2(1):2001201225,,,(2),1S,P1P4,n1n2,1(3),,,F(2)(4),,x(k)=N-1n=0x(n)wknN0kn-11,3,,,,21324720027NDTVol.24No.7July2002©1995-2004TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.2312,,,,,,,,,80%,,[2]33.1,,,,,,,,(4a);,(a)(b)(c)4(4b);(),(4c)(1),,,,,,,(5a),(5b),(5c)(a)(b)(c)5(2),,(3),,,(4);,,,3.2(1),,,(2),(6a),,,,,(6b)(a)(b)6313:©1995-2004TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.(3),,,,,,(4),,,,,,7(5),,,,,,,,(8)783.3(1),,,(2),,,3.4(1),,(2),,,,,,(9)(a)(b)9(3)()T,(4),,,101011(5),,,,(6)()(),,,,,,,,(11)(7),(12a),;(12b),,(a)(b)1244.1,,4.2,4.3,,,4.4,,(316)413:©1995-2004TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.,20mm2mm0.5mm,12mm,20mm20mm6mm,1.3377mm,331.2.3.4.2mm,300mm,377mm20mm20mm6mm,6mm,,,23,3,200mm,,,0.5mm,,,2,,,,,,,,,,,50076500,,,3,,,3min,,,,,,(314)4.5,,3604.6,,,,,4.7()4.8,,,,5,,,:[1],.()[Z].:1983.[2].()[Z].:1995.613:©1995-2004TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.