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Resin Flow Analysis for the Foam Core Sandwich Spoiler by Vacuum-Assisted Resin Injection Process
Authors:Chao Yan  Yishen Li  Xia Su  Qi Liu  Yuning Wang  Kai Wu  Xiaoqing Wu
Affiliation:1.School of Textile Science and Engineering, Tiangong University, Tianjin 300387, China;2.AVIC Xi’an Aircraft Industry Group Company Ltd., Xi’an 710089, China; (Y.L.); (X.S.); (Q.L.); (Y.W.); (K.W.)
Abstract:
This article presents the numerical analysis and experimental investigation for the manufacturing of a foam core sandwich spoiler by vacuum-assisted resin injection (VARI) process. To find an injection scheme that guarantees both a good impregnation of the preform and a filling time compatible with the process window, the finite element model (FEM) was applied to analyze the effect of different injection schemes on the resin flow front patterns. Based on the obtained results, two optimal injection schemes are selected to form the spoiler structure. The experimental results show that the best molding quality can be achieved from the thick-end injection with a thin-end exit scheme. The comparison between simulation and experimental results shows that the overall deviation of the numerical analysis on resin flow time is 15.9%.
Keywords:foam core sandwich spoiler   VARI   resin flow   FEM   resin flow front
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