Title :
Giant magneto resistance based eddy-current testing system
Author :
Wang Chen ; Zhao Yulu ; Fan Jingjing ; Zhang Xiaojuan
Author_Institution :
Key Lab. of Electromagn. Radiat. & Sensing Technol., Beijing, China
Abstract :
The purpose of this paper is to introduce a new eddy-current testing system for subsurface crack detection based on giant magneto resistive (GMR) sensors. The optimized probes having small dimensions and high sensitivity to low magnetic fields enhances the spatial resolution of an ECT system. Experimental results of different frequencies and different liftoff distance are presented.
Keywords :
eddy current testing; giant magnetoresistance; magnetic sensors; surface cracks; ECT system; GMR sensors; eddy-current testing system; giant magnetoresistance; giant magnetoresistive sensors; low magnetic fields; optimized probes; spatial resolution; subsurface crack detection; Coils; Eddy currents; Magnetic sensors; Noise; Probes; Testing; Eddy-Current testing; crack detection; giant magneto resistive(GMR);
Conference_Titel :
Nondestructive Evaluation/Testing (FENDT), 2014 IEEE Far East Forum on
Conference_Location :
Chengdu
Print_ISBN :
978-1-4799-4731-7
DOI :
10.1109/FENDT.2014.6928265
