Fig. 10.

(a) Temporal profiles of the Rayleigh wave signals at different grid discretization and (b) convergence curve for the Rayleigh signal vector ${\Vert l\Vert }^2$ norm. Signal excitation parameters were $d=250\mu \mathrm{m}$ and $T=100\mu \mathrm{s}$ [see Eqs. (3)–(5)].