Application of a Preisach-type hysteresis model to the magnetic evaluation of material degradation

Issue title: Proceedings of the twelfth International Symposium on Interdisciplinary Electromagnetic, Mechanic and Biomedical Problems, ISEM Bad Gastein

Article type: Research Article

Authors: Vandenbossche, Lode^{a; *} | Duprè, Luc^a | Melkebeek, Jan^a

Affiliations: [a] Ghent University, Department of Electrical Energy, Systems and Automation, Sint-Pietersnieuwstraat 41, B-9000 Gent, Belgium

Correspondence: [*] Corresponding author. Tel.: +32 9 264 3421; Fax: +32 9 264 3582; E-mail: Lode.Vandenbossche@UGent.be

Abstract: Preisach-based magnetic characterization is applied as a non-destructive method to evaluate material degradation due to metal fatigue. At predetermined interruptions of the cyclic mechanical loading a set of first order symmetric and a set of second order minor magnetisation loops are measured and analysed using both the classical and the moving Preisach model. The evolution of microstructure dependent magnetic features such as the Preisach distribution function, the mean-field parameter k and the local coercive field distribution Q_{c}(h_{c}) is monitored: k increases and the peak value of Q_{c} decreases with the number of stress cycles. Moreover, for both parameters the rate of change is higher during the last 10% of the fatigue lifetime.

Keywords: Magnetic hysteresis, moving Preisach model, non-destructive evaluation, fatigue

DOI: 10.3233/JAE-2007-787

Journal: International Journal of Applied Electromagnetics and Mechanics, vol. 25, no. 1-4, pp. 363-368, 2007