Wavelet Ridge Analysis of Lamb Wave
Lamb wave has important application value in material nondestructive testing. It is a kind of ultrasonic guided wave propagating in thin plate material. It has the dispersion characteristic, which greatly limits its wide application in material evaluation. After continuous wavelet transformation, we extract the feature of ridge of Lamb wave signals by adopting crazy climber algorithm. Experimental results show that Lamb wave after transmission of a certain distance has the characteristics like asymptotic signal. The ridge can reflect the dispersion characteristic of Lamb wave.
Wavelet transform Nondestructive testing Lamb wave Ridge Crazy climber algorithm
Xiao Chen Lisuo Bao
School of Electronic and Information Engineering, Nanjing University of Information Science andTechn School of Electronic and Information Engineering, Nanjing University of Information Science and Tech
国际会议
沈阳
英文
484-487
2011-11-22（万方平台首次上网日期，不代表论文的发表时间）