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

Volume

51

Issue

2

fYear

2002

fDate

4/1/2002 12:00:00 AM

Firstpage

241

Lastpage

245

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;

fLanguage

English

Journal_Title

Instrumentation and Measurement, IEEE Transactions on

Publisher

ieee

ISSN

0018-9456

Type

jour

DOI

10.1109/19.997819

Filename

997819