Monitoring in situ in real time of resin infusion for thermoset composite structures

17th World Textile Conference AUTEX 2017 - Shaping the Future of Textiles

Faci, A.^1,2 ; Wang, P.^1,2 ; Cochrane, C.^1,2 ; Koncar, V.^1,2

University Lille Nord de France, Lille

F-59000, France^1

ENSAIT, GEMTEX, Roubaix

F-59100, France^2

关键词: Electrical resistances;    Green composites;    Piezo-resistive sensors;    Polymerization process;    Resin flow front;    Sensor concepts;    Thermoset composites;    Vacuum infusion;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/254/14/142008/pdf
DOI  :  10.1088/1757-899X/254/14/142008

来源: IOP

【 摘 要 】

The presented work investigates changes in electrical resistance of embedded sensory yarns as a method to monitor the resin flow front position and curing degree of resin during manufacturing of composite structures by vacuum infusion technology. The sensor concept is based on Piezo-resistive sensors integrated to the flax fabric, having almost identical propriety and dimensions as the flax threads used for the production of reinforcements. In the first time sensors have been characterized and first measures of the resin infusion have been realized in order to demonstrate the feasibility of the proposed approach. Then, the measures in real time were realized with fibrous sensors added to the flax fabric (green composites) to monitor the flow front of resin. A large amount of data recorded, filtered, examined, analysed and processed in order to understand and to optimize the infusion and polymerization process.