POLYMERS AND POLYMER MATRIX COMPOSITES |
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Optimization and Simulation of Vacuum Assisted Resin Infusion Process for Perforated and Grooved Foam Sandwich Composite |
YANG Zhangtao1, NI Aiqing2, WANG Jihui1,*, FENG Yuwei1
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1 School of Materials Science and Engineering, Wuhan University of Technology, Wuhan 430070, China 2 State Key Laboratory of Advanced Technology for Material Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, China |
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Abstract The design of perforated and grooved foam sandwich composites was proposed here and the processing technique of vacuum assisted resin infusion (VARI) used was investigated experimentally and numerically. Firstly, the related parameters of glass fiber fabric and resin were measured experimentally. The Hagen-Poiseuill equation and Darcy’s law were used to calculate the equivalent permeabilities of the holes and grooves. Then, the VARI processing of perforated and grooved foam sandwich composites was simulated by PAM-RTM and compared with experimental results. Afterwards, PAM-RTM was applied to study the influence of the parameter of core processing, the perfusion scheme of resin and the location of distribution medium on the molding process, and the optimal scheme was obtained. Finally, by investigating this scheme, the relationship between resin viscosity and perfusion time was studied, and the prediction function was obtained by fitting. The results show that good agreement was achieved between the experiment and simulation. The optimal perfusion scheme can significantly shorten the filling time of resin and reduce the overall porosity. The perfusion time can be accurately predicted by prediction function, which serves as significant guidance for practical production.
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Published: 25 January 2024
Online: 2024-01-26
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