Abstract
Abstract Eddy current field excited by a parallel coil placed next to a ferromagnetic pipe with remanence is studied in this paper. The influence of the remanence is analyzed at first. The analytical solutions to the ferromagnetic pipe eddy current field are deduced by means of a second-order vector potential formalism, and the analytical expression for the impedance change of the excitation coil is constructed. Theoretical analysis of the influence for the remanence and the analytical solutions to the eddy current field are verified by experiments.
| Original language | English |
|---|---|
| Pages (from-to) | 121-126 |
| Number of pages | 6 |
| Journal | NDT and E International |
| Volume | 60 |
| DOIs | |
| Publication status | Published - 2013 |
| Externally published | Yes |
Keywords
- Analytical solution
- Eddy current testing
- Electromagnetic field
- Ferromagnetic pipe
- Remanence