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Field distributions around arbitrary shape surface cracks in metals, induced by high-frequency alternating-current-carrying wires of arbitrary shape

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3 Author(s)
Ravan, M. ; Dept. of Electr. Eng., Amirkabir Univ. of Technol., Tehran ; Sadeghi, S.H.H. ; Moini, R.

We propose an efficient modeling technique for theoretical prediction of magnetic field distributions around an arbitrary shape surface-breaking crack in a metal, induced by an alternating-current-carrying wire of arbitrary shape. The finite-difference method is first used to solve the governing Laplace equation inside the crack region. The normal component of magnetic field at the crack opening is thus obtained to derive a closed-form solution in the Fourier domain for the regions outside the crack. To support the validity of the model, we compare experimental results with their theoretical counterparts

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Magnetics, IEEE Transactions on  (Volume:42 ,  Issue: 9 )