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Physical modeling of an eddy current sensor designed for real time distance and thickness measurement in galvanization industry

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3 Author(s)
Placko, D. ; LESIR-ENS, Cachan, France ; Clergeot, H. ; Santander, E.

An analytical model of an eddy current sensor designed for noncontact thickness and distance measurement is presented. A dipolar model allows the external physical parameters (conductivity and permeability of alloys) to be taken into account. Analysis of an iron sheet coated with a conductive material gives an accurate interpretation of the detected signals, useful for optimization of the sensor design. Experimental and theoretical data are compared for a galvanization line, demonstrating the potential of this system for nondestructive continuous evaluation

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Magnetics, IEEE Transactions on  (Volume:25 ,  Issue: 4 )