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

Author

Fetzer, Joachim ; Kurz, Stefan ; Lehner, Günther

Author_Institution

Inst. fur Theor. der Elektrotech., Stuttgart Univ., Germany

Volume

33

Issue

1

fYear

1997

fDate

1/1/1997 12:00:00 AM

Firstpage

677

Lastpage

681

Abstract

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

Keywords

boundary-elements methods; coils; eddy current testing; finite element analysis; BEM-FEM coupling; TEAM workshop Problem 8; boundary elements; common boundaries; conducting parts; discretization effort; eddy currents; exciting coil; finite elements; nondestructive testing applications; Boundary conditions; Coils; Eddy currents; Finite element methods; Integral equations; Laplace equations; Maxwell equations; Nondestructive testing; Probes; Shape;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.560096

Filename

560096