| Title |
Magnetic Inspection using High-frequency Current Behaviors |
| Authors |
임한상(Im, Han-Sang) ; 박재홍(Park, Jae-Hong) |
| Keywords |
magnetic inspection ; high-frequency current behaviors ; search coil ; ECP |
| Abstract |
In this paper, an improved method for magnetic inspection to detect surface of a conductor is presented. The presented method is based on the technique of ECP(Electric Current Perturbation), which is to measure the variation of current flow due to defects with a magnetic sensor. The inspection performance is improved by using high frequency current behaviors in order to concentrate the current near the defect and employing the resonant frequency of a search coil as an operating frequency. By analytical results and experiments of the test specimens, the feasibility of the inspection method is shown. |