FIELD: devices for exciting mechanical vibrations in material specimens and full- scale parts. SUBSTANCE: magnetostrictive unit has cylindrical core built up of annular magnetostrictive plates with holes, electric winding, mechanical vibration transformer, entity to be excited, studs, rod-type mechanical-vibration concentrator. EFFECT: improved dispersing capacity and increased electroacoustic efficiency of unit. 3 cl, 3 dwg
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