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Sensors 2018, 18(1), 4; https://doi.org/10.3390/s18010004

Development and Application of Eddy Current Sensor Arrays for Process Integrated Inspection of Carbon Fibre Preforms

Karlsruhe Institute of Technology (KIT), wbk Institute of Production Science, 76131 Karlsruhe, Germany
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Received: 7 November 2017 / Revised: 14 December 2017 / Accepted: 15 December 2017 / Published: 21 December 2017
(This article belongs to the Special Issue Innovative Smart Sensors for Control Systems)
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Abstract

This publication presents the realisation of a sensor concept, which is based on eddy current testing, to detect textile defects during preforming of semi-finished carbon fibre parts. The presented system has the potential for 100% control of manufactured carbon fibre based components, allowing the immediate exclusion of defective parts from further process steps. The core innovation of this system is given by the high degree of process integration, which has not been implemented in the state of the art. The publication presents the functional principle of the sensor that is based on half-transmission probes as well as the signals that can be gained by its application. Furthermore, a method to determine the optimum sensor resolution is presented as well as the sensor housing and its integration in the preforming process. View Full-Text
Keywords: carbon fibre preforms; eddy current testing; in-process quality inspection carbon fibre preforms; eddy current testing; in-process quality inspection
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).
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Berger, D.; Lanza, G. Development and Application of Eddy Current Sensor Arrays for Process Integrated Inspection of Carbon Fibre Preforms. Sensors 2018, 18, 4.

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