METHOD OF EXCITATION OF ACOUSTIC OSCILLATIONS IN CONDUCTING MATERIALS Russian patent published in 2015 - IPC B06B1/04 G01N29/04 

FIELD: measurement equipment.

SUBSTANCE: invention describes a method of excitation of acoustic oscillations using electromagnetic and acoustic (EMA) method with the use of the phenomenon of EMA-resonance and can be used in nondestructive examination, in particular, of low-conducting materials. In the top layer of the tested product the vortex currents are generated and occurrence and distribution of acoustic oscillations is initiated, and the exciting field frequency is selected from the conditions of equality of lengths of waves of electromagnetic and acoustic fields, and the phase is adjusted until coincidence of spatial distribution of the driving force with strains of a crystal lattice.

EFFECT: improvement of efficiency of excitation of acoustic oscillations by electromagnetic and acoustic method.

2 cl, 3 dwg