Active control of the vacuum infusion process |
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| Affiliation: | 1. School of Mechanical, Materials and Manufacturing Engineering, University of Nottingham, Nottingham NG7 2RD, UK;2. INEGI, Rua Do Borroco, 174/4465-591 Leca da Balio, Portugal;3. Department of Mechanical Engineering, University of Ottawa, Ottawa, Canada K1N 6N5;1. Engineering Design and Advanced Manufacturing, MIT Portugal Program, Faculty of Engineering, University of Porto, Porto, Portugal;2. Institute of Mechanical Engineering and Industrial Management, Campus FEUP, Porto, Portugal;1. Chair on Composites of High Performance, École polytechnique de Montréal, Canada;2. Department of Mechanical Engineering, University of Delaware, USA;3. Hexcel Reinforcements, Les Avenieres, France;4. Department of Metallurgy and Materials Engineering, KU Leuven, Belgium;5. Mechanical Engineering Department, University of Wisconsin, USA;6. Institut für Polymerwerkstoffe und Kunststofftechnik, Technische Universität Clausthal, Germany;7. Campus da FEUP, Universidade do Porto, Portugal;8. Centre of Structure Technologies, Eidgenössische Technische Hochschule Zürich, Switzerland;9. Laboratoire de technologie des Composites et Polymères, École Polytechnique Fédérale de Lausanne, Switzerland;10. Division of Materials, Mechanics and Structures, University of Nottingham, UK;11. Institute of Material Science and Technology, National University of Mar del Plata, Argentina;12. Universitat Politecnica de Valencia, Spain;13. Swerea SICOMP, Öjebyn, Sweden;14. Institute for Carbon Composites, Faculty of Mechanical Engineering, Technische Universitaet Muenchen, Garching, Germany;15. Pôle de Plasturgie de l’Est, PPE, France;p. Airbus Operations GmbH, Bremen, Germany;1. Koç University, Mechanical Engineering Department, Rumelifeneri Yolu, Sariyer 34450, Istanbul, Turkey;2. University of Oklahoma, Aerospace and Mechanical Engineering, 865 Asp Ave., Norman, OK 73019, United States;1. ECPI, Laboratory of High Energy Physics and Condensed Matter, Faculty of Science, Hassan II University of Casablanca, 20100, Morocco;2. Department of Electrical Engineering, ENSEM, Hassan II University of Casablanca, 20100, Morocco;3. Department of Mechanical Engineering, ENSEM, Hassan II University of Casablanca, 20100, Morocco |
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| Abstract: | Through infusion experiments, fibrous preforms are shown to have an inherent heterogeneity in the permeability. This heterogeneity can lead to unforeseen, unpredictable and potentially, problematic flow patterns. A new active control system is proposed to address this issue, capable of monitoring the resin flow, identifying flow disturbances and taking an appropriate corrective action in real-time, through computer-controlled injection ports. A simple technique is also proposed for monitoring the resin flow in closed moulding processes such as Vacuum Infusion (VI), where at least one side of the mould is visible. This uses a low cost web-camera to capture images at fixed time intervals during the infusion phase and analyses them to identify flow disturbances. The control system then uses this information to take corrective action in real-time. To demonstrate the potential of the system, it has been implemented and validated through numerical simulations and infusion experiments. |
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