ANALYSIS OF AN EDDY-CURRENT TRANSDUCER WITH IMPULSIVE EXCITATION IN THE NONDESTRUCTIVE TESTING OF CYLINDRICAL OBJECTS

摘要

We study the possibility of application the eddy-current method with impulsive excitation for the monitoring of the diameter and electric conductivity of cylindrical objects. For the processing of informative signals of a transducer, it is proposed to use the Hilbert transformation and a condition for the narrow-and wide-band "eddy-current transducer-tested object" systems, which would enable us to specify the spectral composition of the signals in the stage of design of the eddy-current devices.