PROCESS OF DETECTION OF GAS-SATURATED LAYERS ON TITANIUM ALLOYS AND DEVICE FOR ITS IMPLEMENTATION Russian patent published in 1998 - IPC

FIELD: nondestructive testing. SUBSTANCE: in agreement with invention value of frequency of excitation voltage of eddy current converter is set less than 20 Mhz. Eddy current converter is placed in series oscillatory circuit with adjustable capacitor and resistor. After detection output voltage U_out of circuit is amplified and fed into indicator. Values of capacitance and resistance are chosen from condition: phase ϕ of output voltage of circuit equals 1 var, amplitude U_cir of output voltage is constant under action of change of electric conductivity of flawless sections of tested articles. EFFECT: improved authenticity of process and device. 2 cl, 4 dwg , 6 tbl