Title :
A boundary-integral based forward solution for eddy current nondestructive testing
Author :
Michelsson, O. ; Uhlmann, F.H.
Author_Institution :
Dept. of Fundamentals, Tech. Hochschule Ilmenau, Germany
fDate :
7/1/2000 12:00:00 AM
Abstract :
A new method for the solution of the forward problem in eddy current nondestructive evaluation is proposed. Based on a volume integral formulation the material defect is represented by a secondary current dipole distribution. The scattering by the surface of the tested specimen is taken into account by a Boundary Element Method. This combination leads to a fast calculation scheme for arbitrary shaped nonmagnetic isotropic conductors. Numerical simulation results are compared with public available benchmark data
Keywords :
boundary integral equations; boundary-elements methods; crack detection; eddy current testing; boundary element method; boundary integral method; conducting material; crack defect; eddy current nondestructive testing; forward problem; magnetic field; nonmagnetic isotropic conductor; numerical simulation; secondary current dipole distribution; Conducting materials; Current density; Eddy currents; Integral equations; Magnetic field measurement; Magnetic fields; Magnetic materials; Nondestructive testing; Scattering; Solid modeling;
Journal_Title :
Magnetics, IEEE Transactions on
