Transient eddy currents – are they here to stay?

Abstract

Details of transient eddy-current inspection were first published over ten years ago, however the ideas that led to this technique date back much further to a programme of basic research into eddy-current imaging. The spin-off from this programme has led to several developments in eddy-current technology underlining the essential role of fundamental research as a means of gaining insight into the solution of practical inspection problems. The conceptual development of transient eddy-current inspection is reviewed and evaluated here in order to determine whether or not this technique has the potential to make a significant contribution to NDE.