Abstract
We propose a method to analyze the response of a Dahle-probe to a hidden point flaw. Eddy-current density distribution due to the probe is calculated numerically by using the superposition principle. We modeled the flaw-eddy current interaction by using a pair of circular currents. An analytical expression for the magnetic vector potential produced by a circular current was also developed and the induced voltage measured by the probe pickup coils was numerically calculated. The method has been extended to a pair of point flaws and a long flaw. Finally, we compared the results of numerical calculation with the experimental results which showed a very good agreement. The validity of the method to predict the produced pattern was confirmed by the experiments.
| Original language | English |
|---|---|
| Pages (from-to) | 3240-3242 |
| Number of pages | 3 |
| Journal | IEEE Transactions on Magnetics |
| Volume | 42 |
| Issue number | 10 |
| DOIs | |
| Publication status | Published - Oct 2006 |
All Science Journal Classification (ASJC) codes
- Electronic, Optical and Magnetic Materials
- Electrical and Electronic Engineering