Affiliations: [a] Department of Electromagnetic and Biomedical
Engineering, Faculty of Electrical Engineering, University of Zilina, Zilina,
Slovak Republic
Correspondence:
[*]
Corresponding author: Milan Smetana, Department of
Electromagnetic and Biomedical Engineering, Faculty of Electrical Engineering,
University of Zilina, Univerzitna 1, 010 26 Zilina, Slovak Republic. Tel.: +421
41 5132145; Fax: +421 41 5131519; E-mail: smetana@fel.uniza.sk
Abstract: The article deals with utilization of two various types of sensing
elements in eddy current non-destructive testing. An inductance coil and a
fluxgate magnetometer are employed to pick-up the response signals from
artificial slits. The sensitivity and the resolution of the two types of
sensors are analysed under the same conditions. The sensors' performances are
compared under the harmonic excitation and the pulsed one as well. Numerical
simulations and experimental measurements are carried out for performing the
evaluation. The gained results are presented and discussed in the paper.
Keywords: Non-destructive inspection, eddy currents, harmonic and pulsed excitations, inductance coil, fluxgate magnetometer, excitation and sensing system
