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.
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