Absolute wall thickness measurement of conducting plates using pulsed eddy currents

Pulsed eddy currents can be used to determine the thickness of a conducting plate. This method is extended to enable the measurement of the plate thickness and its material properties simultaneously. The need for a calibration of the material properties of a conducting plate to enable the measurement of its thickness has been removed. The method relies on a suitable geometry with well known dimensions and suitable hardware to create a current pulse and measure a transient magnetic induction. For an optimal performance, the design depends on the thickness range that should be accessible.