Title :
Characterization of defects on rivets using a eddy current technique with GMRs
Author :
Rocha, Tiago ; Pasadas, Dário ; Ribeiro, A. Lopes ; Ramos, Helena M.
Author_Institution :
Inst. Telecomun., Inst. Super. Tecnico, Lisbon, Portugal
Abstract :
This paper presents the characterization of defects on rivets using an eddy current based measurement system and signal processing algorithms to increase the signal to noise ratio. The instrument includes a planar eddy-current probe having a giant magnetoresistor (GMR) based sensor. The characterization of surface and sub-surface defects is depicted and the metrological performance analyzed.
Keywords :
eddy currents; electric current measurement; giant magnetoresistance; measurement systems; sensors; GMR based sensor; eddy current based measurement system; giant magnetoresistor based sensor; planar eddy-current probe; rivets defects; signal processing algorithms; signal to noise ratio; subsurface defects; Coils; Current measurement; Eddy currents; Giant magnetoresistance; Magnetic fields; Magnetic sensors; Probes; Eddy Current Testing; Giant Magnetoresistor; Rivet;
Conference_Titel :
Instrumentation and Measurement Technology Conference (I2MTC), 2012 IEEE International
Conference_Location :
Graz
Print_ISBN :
978-1-4577-1773-4
DOI :
10.1109/I2MTC.2012.6229389
