抄録
It is shown that the pickup head consisting of cross-coupled figure-eight coils originally developed for the magnetostrictive torque sensor is well suited for the eddy current probe detecting small defects in a nonmagnetic conductive material. The probe is easily extended to a one dimensional array form, which substantially reduces number of times of scanning the targeted materials. The response of a single unit of the probe to a trough hole defect in an aluminum plate are presented. A halfway hole at the back of an aluminum plate of 1.2 mm in thickness was successfully detected from the front using this probe. A five-channel array was developed in which the excitation coil is shared by all the channel. A small through hole defect in an aluminum plate was detected clearly by a single scan with the array probe.
本文言語 | 英語 |
---|---|
ページ(範囲) | 3149-3151 |
ページ数 | 3 |
ジャーナル | IEEE Transactions on Magnetics |
巻 | 31 |
号 | 6 |
DOI | |
出版ステータス | 出版済み - 11月 1995 |
!!!All Science Journal Classification (ASJC) codes
- 電子材料、光学材料、および磁性材料
- 電子工学および電気工学