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2007. . No. 2(36) - Jun 2007, pp. 12-14

The Eddy Current Arrays

C. Eddie, J. Bittner, B. Lepage, A. Lamarre

Eddy current technology is an electromagnetic technique widely used in the aerospace, automotive, petrochemical, and power generation industries for the inspection of metallic structures. In this technique, the probe, which is excited with an alternative current, induces eddy current into the part under inspection. Any discontinuities or material property variations that change the eddy current flow in the part are detected by the probe and considered a potential defect. Recently, an important improvement of this technique was realized with the development of eddy current array technology.
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