A Heat Flux Sensor to Monitor Composite Manufacturing Processes

Maxime Villière 1 Xavier Tardif 2 Sebastien Guéroult 2 Vincent Sobotka 1 Nicolas Boyard 1 Didier Delaunay 1 Joël Bréard 3
1 LTN - Laboratoire de thermocinétique [Nantes]
2 IRT Jules Verne - Institut de Recherche Technologique Jules Verne [Bouguenais]
3 LOMC - Laboratoire Ondes et Milieux Complexes
Abstract : Composite materials are heterogeneous materials which consist of a matrix reinforced by fibers. One of the most promising manufacturing processes are Liquid Composite Moulding (LCM) in which a stationary fibrous preform is impregnated by a liquid. It is essential to monitor two key-steps in order to ensure high quality composite parts: the mould-filling stage, during which the liquid resin flows through the fibrous preform and the solidification. Two examples related to these issues are detailed here, the common point being the use of the same sensor to identify the different properties. In a first part, an experimental device has been designed to quantify the saturation profile of a preform. This set-up consists of a mould with heat flux sensors and an injection device reproducing the actual forming process. The saturation curve can be obtained by exploiting the wall heat fluxes. In a second part, this study emphasizes the use of the same heat flux sensors to monitor the consolidation phase. Indeed heat transfer and temperature during the forming process are strongly coupled with the phase change through the variation of thermal properties. These methods clearly open up new perspectives regarding the online control of composite manufacturing processes at an industrial scale.
Keywords : Sensors Monitoring
Type de document :
Communication dans un congrès
Le Cam, Vincent and Mevel, Laurent and Schoefs, Franck. EWSHM - 7th European Workshop on Structural Health Monitoring, Jul 2014, Nantes, France. 2014
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Maxime Villière, Xavier Tardif, Sebastien Guéroult, Vincent Sobotka, Nicolas Boyard, et al.. A Heat Flux Sensor to Monitor Composite Manufacturing Processes. Le Cam, Vincent and Mevel, Laurent and Schoefs, Franck. EWSHM - 7th European Workshop on Structural Health Monitoring, Jul 2014, Nantes, France. 2014. 〈hal-01020393〉

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