DEVICE FOR DETECTING SURFACE AND UNDER-SURFACE CRACKS IN CONDUCTING MATERIALS

摘要

FIELD: nondestructive testing. ^ SUBSTANCE: device comprises generator of voltage of variable frequency (1), vortex current converter (2), scale amplifier (3), phase detector (4), controlled amplifier (5), analogue-digital converter of phase signal (6), microprocessor (7), phase shifter (8), generator of reference signal (10), unit for automatic control of amplification (11), and additional channel for measuring the amplitude of the signal made of amplitude detector (12) and analogue-digital converter of the amplitude signal. ^ EFFECT: expanded functional capabilities. ^ 1 dwg