The coupling of boundary elements and finite elements for nondestructive testing applications

Journal Article · Wed Jan 01 04:00:00 EST 1997 · IEEE Transactions on Magnetics

DOI:https://doi.org/10.1109/20.560096· OSTI ID:449546

Fetzer, J; Kurz, S; Lehner, G ^[1]

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1. Univ. Stuttgart (Germany). Inst. fuer Theorie der Elektrotechnik

In this paper, the coupling of finite elements and boundary elements, referred to as BEM-FEM coupling, is used to numerically treat a nondestructive testing (NDT) problem based on eddy currents. BEM-FEM coupling is especially well suited for NDT problems because it greatly reduces the discretization effort. A general formulation for such problems involving FEM and BEM is given. The coupling of both methods is achieved using the boundary conditions on the common boundaries between FEM and BEM domains. Only the conducting parts and the exciting coil are discretized by finite elements. The surrounding air space is taken into account by boundary elements. As an example, problem No. 8 (coil above a crack) of the TEAM workshop (Testing Electromagnetic Analysis Methods) is considered.

• OSTI ID: 449546
• Journal Information: IEEE Transactions on Magnetics, Journal Name: IEEE Transactions on Magnetics Journal Issue: 1Pt2 Vol. 33; ISSN IEMGAQ; ISSN 0018-9464
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
BOUNDARY CONDITIONS
BOUNDARY ELEMENT METHOD
CRACKS
EDDY CURRENT TESTING
FINITE ELEMENT METHOD