Wideband dispersion removal and mode separation of Lamb waves based on two-component laser interferometer measurement<sup>

Wideband dispersion removal and mode separation of Lamb waves based on two-component laser interferometer measurement

Xu Yan-Feng, Hu Wen-Xiang^†

(color online) (a) Distance-traces mapping after a backward propagation calculation using the propagation function of the A₀ mode for time domain displacement signal. (b) The signals from a Fourier transform of U(x,ω)F(ω) and (B_u/B_v)V(x,ω)F(ω). (c) Final A₀ distance-trace after mode separation and dispersion removal.