FIELD: non-destructive control technologies.
SUBSTANCE: device has detector of local construction areas as well as forced oscillations exciter and recorder of amplitude thereof, placed on opposite sides from controlled area. Local areas detector is made in form of excitation coil enveloping construction, mounted on bas with possible displacement along construction within controlled area, and also connected to coil and placed immediately under it reservoir, open in upper portion and partially filled with ferromagnetic powder.
EFFECT: broader functional capabilities, simplified construction, higher efficiency, higher safety.
2 dwg
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