摘要
采用自动铺丝技术成型蜂窝夹层结构复合材料,其可能产生的缺陷为蜂窝芯侧压变形和预浸丝架桥,分析了二者的形成机理和影响因素。为验证两种成型工艺,设计了阴模成型工装,提出了胶膜预黏接工艺和局部零张力铺放作为缺陷解决方案,对平板蜂窝夹层进行实际铺放验证。对比固化后的制件:对于斜削角度较大的蜂窝,阳模成型不能消除架桥;丝束架桥导致最终制件相应位置出现分层、缺胶缺陷;阴模工装有效避免了蜂窝侧压变形和丝束架桥,更适合自动铺丝成型。可为复杂型面蜂窝夹层构件的自动铺丝成型提供参考。
The honeycomb sandwich structure composite material is formed by automated fiber placement technology, lateral pressure deformation of honeycomb core and prepreg fiber bridging are defects, the formation mechanism and influencing factors of them are analyzed. Design concave molding tooling for two kinds of molding process, adhesive film pre-bonding process and taws zero-tension technique have been proposed to avoid defects. Completing the laying of the flatbed honeycomb sandwich, comparing the parts after curing: its cannot avoid the prepreg fiber bridging use concave module, and bridging position appears stratified, lack of resin defect; convex module is more suitable. The results can provide the reference for forming complex honeycomb sandwich structure composite material.
作者
孙华凯
王显峰
齐俊伟
徐福泉
程健男
肖军
SUN Huakai1, WANG Xianfeng1, QI Junwei1, XU Fuquan2, CHENG Jiannan2, XIAO Jun1(1. R & D Center for Composites Industry Automation, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China;2. AVIC Harbin Aircraft Industry Group Co., Ltd., Harbin 150066, China)
出处
《航空制造技术》
2018年第10期94-99,共6页
Aeronautical Manufacturing Technology
基金
"高档数控机床与基础制造装备"科技重大专项(2016ZX04002-001-07)
"复合材料工程技术中心"中央引导地方科技发展专项(ZY16A05)
江苏省高校优势学科建设工程资助项目
关键词
自动铺丝
蜂窝夹层复合材料
丝束架桥
工装
丝束张力
Automated fiber placement
Honeycomb sandwich structure composite material
Prepreg fiber bridging
Module tooling
Taw tension