Abstract
Eddy current imaging is widely accepted as a nondestructive testing technique enabling efficient flaw reconstruction based on much richer and comprehensive data sets than the traditional Lissajous patterns obtained from a single scan. In this paper the essential problems encountered during creation and processing of eddy current images are reviewed. The special role of eddy current transducers in creation of eddy current images is emphasized. The main part of the paper deals with formation and solving of eddy current problems which arise when flaw shapes should be reconstructed. An iterative method for reconstruction of 3D flaw images is proposed and discussed. The relation between reconstruction of the 3-D flaw image and the restoration of its 2-D top view is analysed.
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