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

Antoine Viana (1) , Laure-Line Rouve (1) , Olivier Chadebec (1) , Gilles Cauffet (1) , Jean-Louis Coulomb (1)

1 G2ELab - Laboratoire de Génie Electrique de Grenoble

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.

Domaines: Energie électrique

Antoine Viana, Laure-Line Rouve, Olivier Chadebec, Gilles Cauffet, Jean-Louis Coulomb. Inverse Problem Approach to Characterize and Model Magnetization Changes in a Thin Shell Structure Undergoing Magneto-Mechanical Effects. IEEE Transactions on Magnetics, 2011, 47 (5), pp.1450 - 1453. ⟨10.1109/TMAG.2010.2097242⟩. ⟨hal-00595031⟩