How can I superimpose the group velocity curves for lamb modes to wavelet transform?

28 June 2014 1 6K Report

1- I conducted wavelet transform for AE signal by AGU-wavelet software for AL plate 6.3mm thick and the source-sensor distance is 300mm.

2- When I try to superimposed the lamb wave dispersion curve to wavelet transform plot by AGU-wavelet software it doesn't come in the right position ( A screen shot in the attachment).

In the attachment my signal data file for AGU-wavelet software

Amro Elhelaly

I found the answer in and in M.A. Hamstad paper published in Journal of Acoustic Emission, Volume 26, 2008 and I would like to share it.

"Comparison of Wavelet Transform and Choi-Williams Distribution to Determine Group

Velocities for Different Acoustic Emission Sensors"

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