Abstract
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.
| Original language | English |
|---|---|
| Pages (from-to) | 3149-3151 |
| Number of pages | 3 |
| Journal | IEEE Transactions on Magnetics |
| Volume | 31 |
| Issue number | 6 |
| DOIs | |
| Publication status | Published - Nov 1995 |
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All Science Journal Classification (ASJC) codes
- Electronic, Optical and Magnetic Materials
- Electrical and Electronic Engineering
Cite this
Eddy Current Probe for Nondestructive Testing Using Cross-Coupled Figure-Eight Coils. / Sasada, I.; Watanabe, N.
In: IEEE Transactions on Magnetics, Vol. 31, No. 6, 11.1995, p. 3149-3151.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Eddy Current Probe for Nondestructive Testing Using Cross-Coupled Figure-Eight Coils
AU - Sasada, I.
AU - Watanabe, N.
PY - 1995/11
Y1 - 1995/11
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=0029408498&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0029408498&partnerID=8YFLogxK
U2 - 10.1109/20.490310
DO - 10.1109/20.490310
M3 - Article
AN - SCOPUS:0029408498
VL - 31
SP - 3149
EP - 3151
JO - IEEE Transactions on Magnetics
JF - IEEE Transactions on Magnetics
SN - 0018-9464
IS - 6
ER -