Title :
Characterization of an eddy-current-based system for nondestructive testing
Author :
Bernieri, Andrea ; Betta, Giovanni ; Ferrigno, Luigi
Author_Institution :
Dept. of Autom., Electromagnetism, Inf. Eng. & Ind. Math., Univ. of Cassino, Italy
fDate :
4/1/2002 12:00:00 AM
Abstract :
A low-cost probe for nondestructive testing of conductive materials was set up and tested. It is based on the measurement of the magnetic field produced by eddy currents (ECs) and perturbed by the presence of cracks. The magnetic sensor used, characterized by the authors in a previous work, gives an output that, suitably processed, allow both the amplitude and phase of the magnetic field to be measured. The preliminary tests reported confirm the suitability of the proposed probe for detecting cracks and correctly identifying their direction and depths
Keywords :
crack detection; eddy current testing; flaw detection; magnetic field measurement; probes; conductive materials; crack depths; crack detection; crack direction; cracks; eddy currents; eddy-current-based system; low-cost probe; magnetic field; magnetic field amplitude; magnetic field perturbation; magnetic field phase; magnetic sensor; magnetic sensor output processing; magnetic transducers; nondestructive testing; soft magnetic materials; Conducting materials; Current measurement; Eddy currents; Magnetic field measurement; Magnetic materials; Magnetic sensors; Materials testing; Nondestructive testing; Phase measurement; Probes;
Journal_Title :
Instrumentation and Measurement, IEEE Transactions on
