Location of micro-cracks in plates using time reversed nonlinear Lamb waves

Liu Yaoxin¹, He Aijun³, Liu Jiehui¹, Mao Yiwei¹, Liu Xiaozhou^{1, 2, †}

The wavelet map of SUM signal when a PM model region existing in an otherwise linear elastic plate. The color specified by the bar indicates the absolute wavelet coefficient.