STUDY OF MAGNETIC SENSORS FOR PULSED EDDY CURRENT TECHNIQUES
G Y Tian Ali Sophian
School of Computing & Engineering, University of Huddersfield, Queensgate,
Huddersfield, United Kingdom
Abstract: In this study we compare the suitability of a Hall device and a GMR
sensor as the sensing device in pulsed eddy current systems. The comparative
study is carried out by using both experimental results and manufacturers' data.
The factors to be analysed are sensitivity, noise level, and operational
bandwidth. Conclusions are given following the analysis of the data.
Keywords: Pulsed Eddy Current NDT, magnetic sensors