Numerical simulation of magnetic incremental permeability for ferromagnetic material

Issue title: Proceedings from the 16th International Symposium on Applied Electromagnetics and Mechanics (ISEM 2013)

Guest editors: Xavier Maldague and Toshiyuki Takagi

Article type: Research Article

Authors: Chen, Hong-En^a | Xie, Shejuan^{a; b} | Zhou, Haiqiang^a | Chen, Zhenmao^{a; *} | Uchimoto, Tetsuya^b | Takagi, Toshiyuki^b | Kensuke, Yoshihara^c

Affiliations: [a] State Key Laboratory for Strength and Vibration of Mechanical Structures, Xi'an Jiaotong University, Xi'an, Shaanxi, China | [b] Institute of Fluid Science, Tohoku University, Sendai, Japan | [c] The Kansai Electric Power Co., Fukui-ken, Japan | Université Laval, Canada | Tohoku University, Japan

Correspondence: [*] Corresponding author: Zhenmao Chen, State Key Laboratory for Strength and Vibration of Mechanical Structures, Xi'an Jiaotong University, Xi'an 710049, Shaanxi, China. Tel./Fax: +86 29 8266 8736; E-mail: chenzm@mail.xjtu.edu.cn

Abstract: Magnetic Incremental Permeability (MIP) method practiced as a NDT technique to evaluate the material degradation is based on the eddy current testing in addition to a low frequency bias magnetic field generated by an electromagnetic magnet. To clarify the mechanism of MIP and to find optimal probe design, a numerical method to simulate MIP profile is important. In this paper, a simulation scheme and a numerical code are developed for MIP of ferromagnetic material based on the simulated polarization strategy and the reduced vector potential formulae. Experiments are also conducted for test-pieces of carbon steel to demonstrate the validity of the proposed scheme.

Keywords: Numerical simulation, magnetic incremental permeability, ferromagnetic material, ECT, nonlinear, static field

DOI: 10.3233/JAE-141854

Journal: International Journal of Applied Electromagnetics and Mechanics, vol. 45, no. 1-4, pp. 379-386, 2014