Stagnant Nonuniform Acoustic Wave

Abstract

Studied theoretically and experimentally antisymmetric stagnant waves in an elastic wedge-shaped plate. The solution of the nonuniform problem is obtained with the approxima¬tion that the field nonuniformity is not only small but is slowly changing. For a small angle of the wedge are calculated and measured amplitude in a standing wave. Experimental measure¬ments of the amplitudes of the displacements are fulfilled using the original installation.

An experimental setup for contactless measurement of the velocity of Rayleigh waves and the surface displacement amplitude

“…Figure 2 shows a block diagram of the experimental setup that is used to measure the surface displace ment amplitude and the velocity of a Rayleigh wave on a wedge shaped plate. As was established in [4,5], a stagnant wave pattern occurs in this plate near the edge (Fig. 1) that is formed by an incident wave and the wave reflected from the edge; this pattern occupies a confined millimeter size area.…”

“…This setup was tested via determining the amplitude of a stagnant wave in the vicinity of an edge [4,5].…”