Affiliations: School of Mechanical Science & Engineering, Huazhong University of Science and Technology, Wuhan, Hubei, China
Correspondence:
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Corresponding author: Xinjun Wu, School of Mechanical Science and Engineering, Huazhong University of Science and Technology, 1037 Luoyu Road, Wuhan 430074, Hubei, China. Tel./Fax: +86 27 87559332; E-mail:xinjunwu@mail.hust.edu.cn
Abstract: Models of the uniform wall thinning, a cylindrical
through-hole for non-magnetic plate and the ferrite cored probes have been
solved using the truncated region eigenfunction expansion (TREE) method.
However, the solution of Pulsed Eddy Current Testing (PECT) for steel plate
with a flat-bottom hole has seldom been given. By constructing the
expressions of magnetic vector potential and solving the eigenfunction in
the region where the flat-bottom hole placed,
the analytical solution of PECT for the ferromagnetic plate with a flat-bottom hole is
obtained. The solution is verified by a 2-D Finite Element Modeling (FEM),
and the theoretical results obtained with the TREE method are in good
agreement with the numerical ones obtained with a 2-D FEM package. The study
proposes a theoretical method to analyze the PECT for wall thinning with the
size similar to the probe.
