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Multichannel measurement system for non-destructive testing of carbon-fiber-reinforced polymer composites

This paper presents a customized measurement system for non-destructive testing of carbon-fiber-reinforced polymer composites. The measurement principle is based on changes in the magnitude of a transmission coefficient between two planar coupled spiral inductors caused by defects buried in the composite under test. The system consists of several measurement channels to speed up the scanning process performed with the array of sensors. Selected experimental results are shown.