A finite element model for three-dimensional eddy current NDT phenomena
Abstract
The defect detection mechanism for eddy current nondestructive testing (NDT) probes is related to the interaction of induced eddy currents in the metal test specimen with flaws an the coupling of these interaction effects with the moving test probe. To date, numerical modeling of these phenomena has been limited to two-dimensional and axisymmetric geometries. A three-dimensional magnetic vector potential finite element formulation for the modeling of eddy current NDT phenomena is described, and the techniques is illustrated by predicting differential eddy current probe impedance plane trajectories for flaws in PWR steam generator tubing.
- Publication:
-
IEEE Transactions on Magnetics
- Pub Date:
- November 1985
- DOI:
- 10.1109/TMAG.1985.1064207
- Bibcode:
- 1985ITM....21.2635I
- Keywords:
-
- Computational Grids;
- Computerized Simulation;
- Eddy Currents;
- Finite Element Method;
- Metal Surfaces;
- Nondestructive Tests;
- Boilers;
- Carbon Steels;
- Differential Equations;
- Electromagnetic Fields;
- Inconel (Trademark);
- Maxwell Equation;
- Pressurized Water Reactors;
- Electronics and Electrical Engineering