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Inverse Problem Approach to Characterize and Model Magnetization Changes in a Thin Shell Structure Undergoing Magneto-Mechanical Effects

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5 Author(s)
Viana, A. ; Grenoble Electr. Eng. Lab., Univ. de Grenoble, St. Martin d''Heres, France ; Rouve, L.-L. ; Chadebec, O. ; Cauffet, G.
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Direct measurement of magnetization M inside a complex ferromagnetic geometry is generally impossible. In this paper, we propose to use an inverse problem algorithm to determine the law of variation of M for such structures, accounting for the magneto-mechanical effects it is undergoing. The analytical law obtained leads to an intrinsic characterization model of magnetostriction inside the structure. Validation of the approach is achieved on a prototype undergoing high mechanical stresses in low magnetic field, by comparison with the predicted magnetic signature in the vicinity of the prototype, and measurements performed on external magnetic sensors.

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Magnetics, IEEE Transactions on  (Volume:47 ,  Issue: 5 )