Inverse problem approach to characterize and model magnetization changes in a thin shell structure undergoing magneto-mechanical effects

Measurement of magnetization M inside a complex ferromagnetic geometry cannot be achieved by usage of any measurement device. 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 magnetization inside the structure. Validation of the results is achieved on a prototype undergoing high mechanical stresses in low magnetic field, by comparison of the predicted magnetic signature in the vicinity of the prototype, and measurements performed by external magnetic sensors.