Fig. 7.
Surface axial displacements in the time domain for different radial positions in (a) a homogeneous medium (E2 = 10 kPa) and (b) a medium with a hard layer (E2 = 50 kPa) placed at a depth of h1 = 1 mm. Shear viscosity is 0.1 Pa s. The time of excitation is 0.5 ms for both cases.