Fig. 9.

(a) Experimentally measured and (b) theoretically predicted spectral components of the displacements on the surface of the two-layered medium (E₁ = 8 kPa, E₂ = 48 kPa) at the point of excitation (r=0) with different thicknesses of the top soft layer (h₁ = 5 mm, and h₁ = 2 mm). (c), (e) Experimentally measured and (d), (f) theoretically predicted displacements in the time domain for the first (h₁ = 5mm) and the second (h₁ = 2 mm) phantoms, respectively, when two different durations of the acoustic pulse were used (0.27 ms and 2.7 ms). In calculations P_max = 43 Pa for both phantoms.