Title :
Low Frequency Eddy Current Imaging using MR Sensor Detecting Tangential Magnetic Components for Non-destructing Evaluation
Author :
Tsukada, K. ; Kiwa, T. ; Kawata, T. ; Ishihara, Y.
Author_Institution :
Okayama Univ., Okayama
Abstract :
An eddy-current distribution imaging system with wide area magnetic field exposure, which can be applied to the detection of deep crack of the metal using a magnetic resistive (MR) sensor is developed. This eddy current image is obtained by the developed system detecting perpendicular components to the magnetic filed exposure. By using very low frequency magnetic field exposure, detection of the opposite side slit of the metal substrate is enabled.
Keywords :
eddy current testing; magnetic sensors; magnetoresistive devices; crack detection; eddy-current imaging; magnetic field; metal substrate; nondestructing evaluation; tangential magnetic components; Coils; Eddy currents; Frequency; Image reconstruction; Image sensors; Magnetic field measurement; Magnetic fields; Magnetic flux; Magnetic sensors; Skin;
Conference_Titel :
Magnetics Conference, 2006. INTERMAG 2006. IEEE International
Conference_Location :
San Diego, CA
Print_ISBN :
1-4244-1479-2
DOI :
10.1109/INTMAG.2006.374918
