[1] Lin Heyun,. Combined method for fast 3-D finite element modelingof nondestructive testing signal [J]. Journal of Southeast University (English Edition), 2004, 20 (2): 195-199. [doi:10.3969/j.issn.1003-7985.2004.02.014]

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Combined method for fast 3-D finite element modelingof nondestructive testing signal()

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Journal of Southeast University (English Edition)[ISSN:1003-7985/CN:32-1325/N]

Volumn:

20

Issue:

2004 2

Page:

195-199

Research Field:

Electrical Engineering

Publishing date:

2004-06-30

Info

Title:

Combined method for fast 3-D finite element modelingof nondestructive testing signal

Author(s):

Lin Heyun

Department of Electrical Engineering, Southeast University, Nanjing 210096, China

Keywords:

nondestructive testing;  finite element method;  modeling;  computational technique

PACS:

TM35

DOI:

10.3969/j.issn.1003-7985.2004.02.014

Abstract:

A combined method for the fast 3-D finite element modeling of defect responses in nondestructive testing of electromagnetics is presented. The method consists of three numerical techniques: zoom-in technique, difference field technique and iterative solution technique. Utilizing the zoom-in technique, the computational zone focuses on a relatively small domain around the defect. Employing the difference field technique, the axisymmetrical field solution corresponding to the case with no defect can be used to simplify the mesh generation and obtain the modeling results quickly. Using the iterative solution technique, the matrix equation system in the 3-D finite element modeling of nondestructive probe signals can easily be solved. The sample calculation shows that the presented method is highly effective and can consequently save significant computer resources.

References:

[1] Sakai T, Bowler J R, Yoshida Y. Development of 3D electromagnetic field FE code specialized for the numerical simulation of eddy current testing [A]. In: Electromagnetic Nondestructive Evaluation [C]. Ohmsha: IOS Press, 1997. 23-29.
[2] Lin H Y, Sun Y S. Application of zoom-in technique in 3D remote eddy current effect computation [J]. IEEE Transactions on Magnetics, 1990, 26(2): 881-884.
[3] Chen Z, Miya K, Kurokawa M. Rapid prediction of eddy current testing signal using A-φ method and database [J]. Int J NET&D, 1999, 32(1): 29-36.
[4] Takagi T, Hashimoto M, Fukutomi H, et al. Benchmark models of eddy current testing for steam generator tube: experiment and numerical analysis [J]. Int J Applied Electromagnetics in Material, 1994, 5(3): 149-162.
[5] Biro O, Preis K. On the use of the magnetic vector potential in the finite element analysis of three-dimensional eddy current [J]. IEEE Transactions on Magnetics, 1989, 25(4): 3145-3159.
[6] Tanaka M, Ikeda K, Tsuboi H. Fast simulation method for eddy current testing [J]. IEEE Transactions on Magnetics, 2000, 36(4): 1728-1731.

Memo

Memo:

Biography: Lin Heyun(1965—), male, doctor, professor, hyling@seu.edu.cn.

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