Comparison of Eddy Current Theory and Finite Element Method for Metal Evaluation

2012
Rauno Gordon, Olev Martens, Andrejs Koliškins

We are working on non-destructive evaluation of metal quality by the electric conductivity. We use contactless method with eddy currents to probe the metal piece. Here we are testing and verifying the theoretical methods for later use in practical algorithms in fast metal conductivity evaluation. In this particular work we compare the basic eddy current theory of coil impedance with the same scenario modeled with Finite Element Method (FEM). We found very good correlation between the theory and Finite Element Method below 2 kHz

Keywords
Coil impedance; Contactless methods; Current theories; Finite element method FEM; Good correlations; Impedance spectroscopy; Metal conductivity; Metal quality; Non destructive evaluation

Gordon, R., Martens, O., Koliškins, A. Comparison of Eddy Current Theory and Finite Element Method for Metal Evaluation. In: Lecture Notes on Impedance Spectroscopy: Measurement, Modeling and Applications. Vol.3. O.Kanoun ed. Boca Raton: CRC Press/Balkema, 2012. pp.41-45. ISBN 9780415644303.

Publication language
English (en)