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Simulation of Transient Eddy-Current Measurement for the Characterization of Depth and Conductivity of a Conductive Plate

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2 Author(s)
Weiying Cheng ; NDE Center, Japan Power Eng. & Inspection Corp., Yokohama ; Komura, I.

A transient eddy-current measurement method is presented to determine the thickness and conductivity of a conductive plate. The conductive plate is induced by an air-cored coil, the magnetic flux density along the axial is measured, and the various signals corresponding to plates with different thickness and conductivity are calculated using a 3-D transient eddy-current simulator. Characteristic features are obtained from the transient response. A similarity-based modeling method is utilized in this paper to estimate the thickness and conductivity of the conductive plate.

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Magnetics, IEEE Transactions on  (Volume:44 ,  Issue: 11 )