一种新型泡沫填充T型加筋壁板液体成型共固化工艺研究

A Novel Approach of Liquid Composite Molding Co-Curing Process of T-Stiffened Composite Structure

选取典型复合材料T型加筋壁板结构件,针对其真空辅助液体成型工艺共固化T型加筋壁板铺贴过程中加筋区填充困难、工艺复杂、不可重复等问题,提出了一种针对阴模成型的新型泡沫填充T型加筋壁板共固化成型工艺方法,采用泡沫加筋芯与纤维铺覆导向板,实现了加筋区尺寸精确控制,解决了阴模加筋区填充困难,表面成型质量差的问题,并在注胶过程中引入钢制均压板,采用单面模具得到双面光滑的T型加筋壁板结构件,研制出的加筋壁板成型质量良好,研究结果对壁板类结构低成本整体成型技术在民机上的应用与发展具有重要参考价值。

This paper aimed to solve the problems in the manufacturing process for typical T-stiffened compositestructure, including difficulty to be filled of the T-stiffened area, complex and unrepeated of the process. A novel approachof vacuum-assisted liquid molding co-curing process was developed to manufacture the T-Stiffened composite structurewith foam cores filled in the stiffened area. Two custom tools were designed in the new approach. During plying procedure,a well-tailored foam core and a ply-guiding plate were used to realize the precise dimension and quality control of the Tstiffenedarea. In the injection process, a steel pressure plate was introduced, which helped to get double-sided smooth Treinforcedpanel using a single-side mold. The manufactured T-stiffened panel was demonstrated to be good in quality. Theresults are of great reference value for the applications and developments of low cost integral manufacturing technic forstiffened structures on airplanes.