Title :
Conductive Microbead Array Detection Based on Eddy-Current Testing Using SV-GMR Sensor and Helmhlotz Coil Exciter
Author :
Somsak, T. ; Chomsuwan, K. ; Yamada, S. ; Massayoshi, I.
Author_Institution :
Kanazawa Univ., Ishikawa
Abstract :
Eddy-current testing (ECT) using a spin-valve giant magnetoresistance (SV-GMR) sensor has been applied to detecting conductive micro-beads and also flaws on a printed circuit board. This paper presents the detection of conductive micro-bead arrays with the gap between SV-GMR sensor and bead for scanning probe. The experimental results can confirm the proposed probe ability for detection of conductive micro-bead array.
Keywords :
eddy current testing; giant magnetoresistance; magnetic sensors; spin valves; ECT; Helmhlotz coil exciter; SV-GMR sensor; conductive microbead array detection; eddy-current testing; printed circuit board; scanning probe; spin-valve giant magnetoresistance sensor; Circuit testing; Coils; Eddy currents; Electrical capacitance tomography; Frequency estimation; Magnetic fields; Magnetic sensors; Position measurement; Probes; Sensor arrays;
Conference_Titel :
Magnetics Conference, 2006. INTERMAG 2006. IEEE International
Conference_Location :
San Diego, CA
Print_ISBN :
1-4244-1479-2
DOI :
10.1109/INTMAG.2006.376267
