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Eddy current measurements are widely used for non-destructive testing and identification of the electrically conductive materials (e.g. metals and alloys) and structures of such materials, also in aerospace industries. As well, new application fields are interesting, like monitoring of the composites, including electrically conductive carbon-fibres inside the structures. One challenge is the precise...
Eddy-current techniques are largely employed for measurements of thickness and conductivity of metallic plate, and layers. In these measurements, an alternating voltage is applied to a magnetizing coil placed over the metallic plate and its impedance is measured as a function of the frequency. The eddy currents induced into the plate produce a magnetic field that couples with the coil, and the resulting...
Electro-magnetic (eddy current-based) sensors are widely used in vending and other coin machines, as electrical conductivity (sometimes measured on various frequencies, for multi-component metallic coins) is a significant distinctive physical property of the coin. Idea of current research is to develop precise and high-speed recognition and then validation of the coins to be realized at very reasonable...
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