期刊文献+

表面波检测中缺陷的当量深度确定 被引量:2

Analysis of Equivalent Depth About Flaw in Ultrasonic Surface Wave
下载PDF
导出
摘要 针对采用表面波检测工件表面、近表面缺陷(d<2λ)时无法测定缺陷深度这一问题,通过理论计算不同距离处具有一定长度、不同深度的人工模拟裂纹缺陷反射回波与工件棱边(可视为无限长、无限深裂纹)反射回波之间的波幅差△值,并与实际检测得出的数据进行线性拟合。试验结果表明,理论计算值与实际检测值吻合情况良好,因此可以通过理论计算作出相应的DGS曲线来对表面及近表面缺陷进行相应的当量深度估算,弥补了该领域的空白。 To solve the problem that the depth of surface and near-surface defects(d〈2λ) can not be measured, Through the theoretical calculation, the value of the difference amplitude between the crack defects of artificial simulation at different distances with a certain length and the edge of workpiece was obtained, and the later one could be considered as infinitely length and infinitely depth. Comparisons were made with the actual testing data after linear fitting it. The result showed that the theoretical value was nearly the same with that obtained from the experiment. So it could make the corresponding equivalent depth analysis with DGS curves which were drawn by theoretical calculation for the surface and near surface defects. It filled a blank of this field.
出处 《无损检测》 2012年第8期39-43,共5页 Nondestructive Testing
关键词 超声表面波 检测灵敏度 当量深度 距离-波幅曲线 Ultrasonic surface wave Flaw detection sensitivity Equivalent depth DGS curve
  • 相关文献

参考文献5

  • 1郑晖,林树青.超声波检测[M].北京:中国劳动社会保障出版社,2008.
  • 2林介东,梁浩,林清如.华能汕头燃机电厂2号压气机叶片超声波探伤报告[R].汕头:华能汕头燃机电厂,1994.
  • 3梁浩,林清如,倪进飞,等.华能汕头燃机电厂I号透平、空压机动、静叶片超声波探伤报告[R].汕头:华能汕头燃机电厂,1994.
  • 4林介东,倪进飞.燃气轮机叶片的超声表面波探伤[J].中国电力,1997,30(7):42-45. 被引量:3
  • 5李克明 刘德荣 张志永 等.超声波探伤[M].北京:水利电力出版社,1985..

共引文献15

同被引文献27

  • 1Fan Y,Dixon S, Edwards R S,et al. Ultrasonic surfacewave propagation and interaction with surface defects onrail track head[ J]. NDT&E International, 2007, 40 (6 ):471-477.
  • 2Jian X,Baillie I,Dixon S. Steel billet inspection using la-ser-EMAT system [ J]. Journal of Physics. D: AppliedPhysics,2007,40(5) :1501-1506.
  • 3Dewhurst R J, Dutton B. Laser/EMAT measurement sys-tems for materials evaluation[A]. Journal of Physics:Con-ference Series[C]. 2007,76(1) :012013-012018.
  • 4Mirko Sgarbi, Valentina Colla,Sivia Cateni,et al. Pre-processing of data coming from a laser-EMAT system fornon-destructive testing of steel slabs [J]. ISA Transac-tions,2012,51(1) : 181-188.
  • 5Dixon S,Burrows S E,Dutton B,et al. Detection of cracksin metal sheets using pulsed laser generated ultrasoundand EMAT detection[J]. Ultrasonics,2011,51(1) -7-16.
  • 6Burrows S E,Dixon S. Defect detection using a scanninglaser source[A]. AIP( American Institute of Physics)Con-ference Proceedings[C]. 2011,30(1335) :249-256.
  • 7Cui X P.Tetsuo F,Hai T Z,et al. A Study of internal de-fect testing with the laser-EMAT ultrasonic method [J].Trans Ultrason Ferroelectr Freq Control,2012,59 (12):2702-2708.
  • 8杜丽婷,刘松平.激光超声检测技术[J].无损探检测,2011,35(5):1-3.
  • 9Sungho Choi, Kyung Young Jhang. Influence of slit widthon harmonic generation in ultrasonic surface waves excit-ed by masking a laser beam with a line arrayed slit[J].NDT&E International,2013,57(1)-.1-6.
  • 10Kenderian S,Djordjevic B B,Green R E Jr. Point and linesource laser generation of ultrasound for inspection of in-ternal and surface flaws in rail and structural materials[J]. Research in Nondestructive Evaluation,2001,13(4):189-200.

引证文献2

二级引证文献15

相关作者

内容加载中请稍等...

相关机构

内容加载中请稍等...

相关主题

内容加载中请稍等...

浏览历史

内容加载中请稍等...
;
使用帮助 返回顶部