ELECTROMAGNETIC-ACOUSTIC CONVERTER Russian patent published in 2003 - IPC

FIELD: ultrasonic nondestructive testing of materials and articles. SUBSTANCE: proposed electromagnetic-acoustic converter has case, magnetic circuit, base, induction coils and system of air ducts to form air cushion between converter and tested object. Magnetic circuit includes vertical conduits in which concentrators of magnetic flux are mounted for adjustment relative to flat base of converter and induction coils. Base is made of nonmagnetic material, induction coils are positioned in rectangular and/or cylindrical grooves cut in above-mentioned base. Recesses of cylindrical or elliptical shape connected to system of air ducts by means of conduits located inside magnetic circuit and base mentioned-above are also made. EFFECT: simplified design, reduced mass, size and consumed power, prolonged durability of converter, increased precision and reliability of testing. 8 dwg