Real-time in situ monitoring of manufacturing process and CFRP quality by relative resistance change measurement |
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| Affiliation: | 1. Université Fédérale Toulouse Midi-Pyrénées / UMR CNRS 5312 – Institut Clément Ader, 3 Rue Caroline Aigle, 31400 Toulouse, France;2. Composites, Expertise & Solutions, 4 Rue Georges Vallerey, F-31320 Castanet Tolosan, France;3. Université de Toulouse, Laboratory for Analysis and Architecture of Systems (LAAS), Toulouse, France;4. Université Fédérale Toulouse Midi-Pyrénées, Laboratory of Human Being Physics Applied to the Environment (PHASE), 118 Route de Narbonne, 31062 Toulouse, France;5. Department of Materials Science and Engineering, Ghent University, 41 Sint-Pietersnieuwstraat, 9000 Ghent, Belgium;6. Industrial Materials Institute, National Research Council of Canada, 75 Boulevard de Mortagne, Boucherville, Quebec J4B6Y4, Canada;7. CONACYT – CIDESI, National Center for Aeronautics Technologies, Carretera Estatal 200, 76259 Querétaro, Mexico;1. Laboratory of Transport, Composite Structures and Materials, Southern Center of Russian Academy of Science, Tchekhov str., 41, Rostov on Don, Russia;2. Institute of Polymer Engineering, The University of Applied Sciences Northwestern Switzerland FHNW, Klosterzelgstrasse 2CH - 5210, Windisch, Switzerland;3. Department of Microelectronic Engineering, National Kaohsiung University of Science and Technology, Nanzih District, Kaohsiung City, Taiwan, ROC;4. Chen-Wei International Co., Ltd., 140 Wujia 2nd Rd., Kaohsiung, Taiwan, ROC;5. Department of Aircraft Engineering, Don State Technical University, Gagarin sq., 1, Rostov on Don, Russia;6. Mathematical Modeling Department, Southern Federal University, Bolshaya Sadovaya str., 105/42, Rostov on Don, Russia |
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| Abstract: | In situ monitoring of resin flow, impregnation of carbon fiber fabrics, and curing during composite manufacturing are very important for determining the quality of composite parts. In conventional methods, sensors, such as optical fibers and strain gages, are bonded to or embedded in the composites for measuring the changes in mechanical and chemical properties. Although they can detect resin curing behavior and impregnation of carbon fibers, they may adversely affect the manufacturing process or structural integrity of the composites. In this study, carbon fiber itself was used as a sensor that minimizes the degradation of mechanical properties and increases the efficiency of monitoring the manufacturing process. The change in the electrical resistance of carbon fiber fabrics was monitored during the various manufacturing processes when the resin flowed through the carbon fiber fabric and curing progressed. The effectiveness of this monitoring method was confirmed, and it is expected to be applicable in monitoring the quality of the finished composite parts. |
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| Keywords: | Carbon fibres Cure behaviour Process monitoring Resin flow |
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