By now, diffraction of Rayleigh waves (RWs) by surface and subsurface obstacles has been studied relatively well. Flaw detection using reflected and transmitted signals yields information on zones of exfoliation of film structures and nanocoatings, on inceptive defects (fractures) in structural elements, and on surface corrosion of pipelines. Sharp screening of surface waves at certain frequencies is used in acoustoelectronics for producing frequency filters. In geophysics, surface waves provide information on the presence and properties of seismic brakes.
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