Affiliations: [a] Department of Electromagnetic and Biomedical
Engineering, Faculty of Electrical Engineering, University of Zilina, Zillina,
Slovak Republic
Correspondence:
[*]
Corresponding author: Ladislav Janousek, 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: [email protected]
Abstract: The paper deals with eddy current non-destructive inspection of
partially conductive cracks. A non-magnetic conductive plate specimen is
examined using numerical simulations. A crack with the rectangular shape is
modelled in the middle of plate. Dimensional parameters and the conductivity of
the crack are varied in wide ranges to imitate diversity of practical
scenarios. A new eddy current probe is designed for the near-side inspection of
the plate. An exciting system of the probe drives uniform eddy currents in the
plate and all the three spatial components of the perturbation electromagnetic
field are sensed with a magnetic sensor. Influences of the crack's partial
conductivity as well as its dimensions on the perturbation field's components
are studied in order to enhance evaluation of real partially conductive
cracks.
