Title :
Crack detection and recognition using an eddy current differential probe
Author :
Chady, T. ; Enokizono, M. ; Sikora, R.
Author_Institution :
Fac. of Eng., Oita Univ., Japan
fDate :
5/1/1999 12:00:00 AM
Abstract :
This paper proposes a new eddy current differential sensor and a system for multi-frequency testing of conducting plates. Precise crack imaging was achieved by the use of spectrograms obtained from an eddy-current probe multi-frequency response and application of a neural network. Results of experiments with test specimens made of SUS304 showing very good sensitivity and spatial resolution are presented. The possibility of detection of an opposite side 20% crack was also confirmed
Keywords :
crack detection; eddy current testing; image recognition; mechanical engineering computing; neural nets; SUS304; conducting plates; crack detection; crack recognition; eddy current differential probe; eddy current testing; flaw reconstruction; multi-frequency response; multi-frequency testing; neural network; opposite side 20% crack detection; precise crack imaging; sensitivity; spatial resolution; Coils; Eddy current testing; Eddy currents; IIR filters; Neural networks; Probes; Sensor systems; Signal processing; Signal processing algorithms; Spectrogram;
Journal_Title :
Magnetics, IEEE Transactions on
