PROPAGATION OF ELASTIC WAVE IN SOLID LAYER-LIQUID SYSTEM.

A solution of the problem of a flat wave propagating without attenuation along a solid layer placed between a half-space filled with liquid and vacuum is presented. For this case, the wave equation of scalar and vector potentials of displacement were solved deriving a characteristic equation accounting for boundary layers. The equation was solved numerically showing that under these conditions the wave can propagate at a velocity slightly smaller than the wave velocity in the liquid. The distributions of stress, acoustic pressure, and displacement of the propagating wave were determined numerically for a layer of a thickness a equals 0. 075 cm and a equals 0. 010 cm, contacting with water on one side, and for a frequency of 3 multiplied by 10**6 Hz. The type of wave is close to a surface wave.