ABSTRACT
The experimental Eddy Current (EC) tomography setup consists of a personal computer (PC) laptop, step motor control block, EC device, and slow 2-D linear scanner. The PC laptop controls all peripheral equipment. The digitized raw data of 16 frequencies are sent to the PC laptop, where EC tomography is processed. The EC prototype works at a multi-frequency mode regime, with 16 frequencies for tomography processing. The “demo” prototype consists of a cylindrical miniature probe, electronic block and a notebook computer, which contains the software for imaging of cracks by use of theoretical framework on EC tomography technique. Experimental measurements were carried out in several stages. The instruments constructed for EC tomography were designed for wider purposes, that is, to detect the presence, location, and shape of both surface and sub-surface defects of various constructions, such as flaws, voids, cracks, holes, and so forth, in conductive, composite, and dielectric materials.
