Defect detection in thin plates by ultrasonic lamb wave techniques

K. Edalati, A. Kermani, M. Seiedi, A. Movafeghi

研究成果: ジャーナルへの寄稿学術誌査読

7 被引用数 (Scopus)


In the present study, the ability of ultrasonic lamb wave testing for defect detection and sizing in a thin aluminium plate (2mm in thickness) was investigated. The numerical methods were applied for drawing the dispersion and displacement curves of lamb waves in order to adopt mode selection. Two ultrasonic lamb wave techniques, pulse-echo (a1 mode as emitter) and emission (s1 mode as emitter), were applied for interpretation of notch defects with depths of 10, 30 and 60% of plate thickness. It was observed that these techniques are sensitive enough to evaluate notch defects, especially in short probe to defect distances. Defect location and defect length were proposed to be determined in the manner similar to common ultrasonic testing methods. Also, a Distance-Amplitude-Correction (DAC) curve was proposed for defect sizing which showed that amplitude analysis can give some qualitative information about defect depth but results were not always repeatable. The pulse-echo method showed better sensitivity for defect detection and sizing.

ジャーナルInternational Journal of Materials and Product Technology
出版ステータス出版済み - 2006

!!!All Science Journal Classification (ASJC) codes

  • 安全性、リスク、信頼性、品質管理
  • 材料力学
  • 機械工学
  • 産業および生産工学


「Defect detection in thin plates by ultrasonic lamb wave techniques」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。