Title :
The treatment of cracks in NDT problems using FEM
Author :
Renhart, W. ; Magele, C.A.
Author_Institution :
Inst. for Fundamentals & Theor. in Electr. Eng., Graz Univ. of Technol., Austria
fDate :
3/1/1990 12:00:00 AM
Abstract :
The use of 3-D eddy current codes to calculate NDT (nondestructive testing) problems is described. The investigations have been carried out on problem eight of the TEAM Workshops. To avoid thin finite-element (FE) sheets in a FE structure so that a well-conditioned equation system is obtained, the possibility of modeling a crack with the aid of boundary conditions is discussed. The field quantities in the vicinity of the crack are compared for the fully modeled crack and for the crack represented by boundary conditions
Keywords :
crack detection; eddy current testing; finite element analysis; crack; eddy current codes; nondestructive testing; well-conditioned equation; Boundary conditions; Coils; Conducting materials; Conductivity; Conductors; Eddy currents; Equations; Finite element methods; Probes; Surface cracks;
Journal_Title :
Magnetics, IEEE Transactions on
