Evaluation of crack depth using eddy current techniques with GMR-based probes

Author

Menezes, Ruben ; Ribeiro, Artur L. ; Ramos, Helena G.

Author_Institution

Inst. de Telecomun., Univ. de Lisboa, Lisbon, Portugal

fYear

2015

fDate

4-5 June 2015

Firstpage

335

Lastpage

339

Abstract

This paper presents experimental and simulated results obtained using the eddy current nondestructive method to conclude about the depth of linear cracks machined on an aluminum plate. Experimental tests were performed with a sinusoidal excitation field of fixed-amplitude and with a giant magnetoresistance-based sensor to measure the resultant magnetic field on the plate surface. To validate and better insight the experimental results, numerical simulations have been carried out with a commercial program for conditions similar to the experimental case studies. A scheme to infer about crack depth is proposed.

Keywords

crack detection; eddy current testing; magnetoresistance; magnetoresistive devices; plates (structures); probes; GMR-based probes; aluminum plates; crack depth evaluation; eddy current nondestructive method; giant magnetoresistance; linear cracks; magnetoresistance-based sensor; resultant magnetic field measure; sinusoidal excitation field; Aluminum; Current measurement; Eddy currents; Magnetic field measurement; Magnetic fields; Magnetic flux density; Probes; GMR; crack depth; crack sizing; eddy current testing; giant magnetoresistance sensor;

fLanguage

English

Publisher

ieee

Conference_Titel

Metrology for Aerospace (MetroAeroSpace), 2015 IEEE

Conference_Location

Benevento

Type

conf

DOI

10.1109/MetroAeroSpace.2015.7180678

Filename

7180678