Numerical simulation of magnetic incremental permeability for ferromagnetic material

Hong En Chen, Shejuan Xie, Haiqiang Zhou, Zhenmao Chen, Tetsuya Uchimoto, Toshiyuki Takagi, Yoshihara Kensuke

Research output: Contribution to journalArticlepeer-review

21 Citations (Scopus)


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.

Original languageEnglish
Pages (from-to)379-386
Number of pages8
JournalInternational Journal of Applied Electromagnetics and Mechanics
Issue number1-4
Publication statusPublished - 2014


  • ECT
  • Numerical simulation
  • ferromagnetic material
  • magnetic incremental permeability
  • nonlinear
  • static field


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