Title :
Application of GMR line sensor to eddy current testing
Author :
Kataoka, Y. ; Wakiwaka, H. ; Shinoura, O. ; Yamagishi, Hisao
Author_Institution :
Shinshu Univ., Nagano, Japan
fDate :
March 30 2003-April 3 2003
Abstract :
In this paper, a [NiFeCo/Cu] multilayer type giant magnetoresistive (GMR) element with the shape of a multi-arc is used. This GMR element has an omni-directional magnetic sensitivity in plane (x-y plane). Magnetic field from all directions in plane can be detected with equal sensitivity using this GMR line sensor. In the leakage flux magnetic testing, this sensor can visualize simultaneously a shape of the defect by single scanning.
Keywords :
cobalt alloys; copper; eddy current testing; giant magnetoresistance; iron alloys; magnetic multilayers; magnetic sensors; nickel alloys; GMR line sensor; NiFeCo-Cu; NiFeCo/Cu multilayer; eddy current testing; giant magnetoresistive element; magnetic sensitivity; multi-arc element; Eddy current testing; Giant magnetoresistance; Magnetic fields; Magnetic flux; Magnetic materials; Magnetic sensors; Phase detection; Sensor phenomena and characterization; Visualization; Voltage;
Conference_Titel :
Magnetics Conference, 2003. INTERMAG 2003. IEEE International
Conference_Location :
Boston, MA, USA
Print_ISBN :
0-7803-7647-1
DOI :
10.1109/INTMAG.2003.1230368
