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Journal of Sensors
Volume 2012, Article ID 785271, 6 pages
Research Article

3D Finite Volume Modeling of ENDE Using Electromagnetic T-Formulation

1Institut de Recherche en Electrotechnique et Electronique de Nantes Atlantique (IREENA), 37 Boulevard de l’Université, BP 406, 44602 Saint Nazaire, France
2Département d’Electrotechnique, Université Mohamed Kheider, Briskra 07000, Algeria

Received 16 January 2012; Revised 21 March 2012; Accepted 6 April 2012

Academic Editor: Xinyong Dong

Copyright © 2012 Yue Li et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


An improved method which can analyze the eddy current density in conductor materials using finite volume method is proposed on the basis of Maxwell equations and T-formulation. The algorithm is applied to solve 3D electromagnetic nondestructive evaluation (E’NDE) benchmark problems. The computing code is applied to study an Inconel 600 work piece with holes or cracks. The impedance change due to the presence of the crack is evaluated and compared with the experimental data of benchmark problems No. 1 and No. 2. The results show a good agreement between both calculated and measured data.