Abstract
The processes of the excitation, propagation, and reception of acoustic vibrations are considered. Acoustic vibrations were excited using the electromagnetic-acoustic (EMA) method. A double-wire antiphased emitter served as a source of a high-frequency field and stainless steel was used as an object of excitation. The graphic dependences for the plane perpendicular to the radiation direction were plotted. The graphs were plotted for an electromagnetic field excited by an emitter, an acoustic field, and an electromagnetic field that was generated as a result of reverse EMA transformation. In addition, the effects of metals with different conductances on the electromagnetic field excited by the emitter were analyzed. The studies were performed for different frequencies and different working gaps. The region of excitation of eddy currents for materials with drastically different conductances was visually demonstrated. The regions of the eddy current distribution were shown to depend on the gap.
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