| Numéro |
J. Phys. IV France
Volume 08, Numéro PR2, June 1998
Soft Magnetic Materials 13
|
|
|---|---|---|
| Page(s) | Pr2-789 - Pr2-792 | |
| DOI | https://doi.org/10.1051/jp4:19982182 | |
Soft Magnetic Materials 13
J. Phys. IV France 08 (1998) Pr2-789-Pr2-792
DOI: 10.1051/jp4:19982182
Department of Electrical and Electronic Engineering, Faculty of Engineering, Oita University, 700 Dannoharu, Oita 870-11, Japan
© EDP Sciences 1998
J. Phys. IV France 08 (1998) Pr2-789-Pr2-792
DOI: 10.1051/jp4:19982182
A moving magnetic flux type sensor with shading coils for eddy current testing
Y. Tsuchida, T. Okamoto and M. EnokizonoDepartment of Electrical and Electronic Engineering, Faculty of Engineering, Oita University, 700 Dannoharu, Oita 870-11, Japan
Abstract
This paper presents a moving magnetic flux type sensor with shading coils for eddy current testing. The eddy current testing is useful for detecting cracks and defects on the surface of the conductive materials. However, it is much difficult to detect them on the reverse side surface otherwise the cracks and defects occur on this surface. Therefore we have developed a new sensor for detecting cracks and defects on the reverse side surface. This sensor consists of shading coils which can yield the moving magnetic field, pick-uap coils and an exciting coil. In this paper, the results measured by this new sensor are shown and the availability of our new sensors is discussed.
© EDP Sciences 1998