复合材料科学与工程 ›› 2021, Vol. 0 ›› Issue (5): 92-97.DOI: 10.19936/j.cnki.2096-8000.20210528.014

• 应用研究 • 上一篇    下一篇

蜂窝夹层结构板-芯脱粘后的修补及对透气性的影响研究

李莺歌, 周占伟, 尉世厚, 周宓   

  1. 北京卫星制造厂有限公司,北京100094
  • 收稿日期:2020-08-17 出版日期:2021-05-28 发布日期:2021-08-04
  • 作者简介:李莺歌(1978-),女,硕士,研究员,主要从事航天器复合材料成型工艺和产品保证方面的工作,yingge1978@sina.com。

THE REPAIR AND AIR PERMEABILITY CONTROL OF THE FACE-CORE DEBONING HONEYCOMB SANDWICH STRUCTURE

LI Ying-ge, ZHOU Zhan-wei, WEI Shi-hou, ZHOU Mi   

  1. Beijing Spacecrafts, Beijing 100094, China
  • Received:2020-08-17 Online:2021-05-28 Published:2021-08-04

摘要: 介绍了蜂窝夹层结构板-芯脱粘的注胶修补、挖补和贴片加强方法,分析了不同修补方法对夹层结构胶接质量、强度、重量和透气性的影响。结果表明:两种修补方法配合贴片加强后均可满足结构的胶接质量和设计许用强度要求;采取挖补方法不会影响原有结构的透气性,试件停止抽真空后压力恢复时间不到2 s,且修补增重最小;采取侧向定位注胶修补方法对原有结构4.5 mm高度外的透气性基本没有影响,试件停止抽真空后压力恢复时间约为4 s,但修补增重略大;采取竖直注胶修补方法对原有结构的透气性影响最大,修补区域或有1/3的蜂窝格孔会被胶液完全填充,因此试件停止抽真空后压力恢复时间最长,约为9 s,且修补增重最大。所得结果可为优化产品修补工艺提供参考。

关键词: 蜂窝夹层结构, 板-芯脱粘, 缺陷, 修补, 透气性, 复合材料

Abstract: This paper introduces the methods of glue injection repair, scarf repair and patch strengthening for the face-core debonding of honeycomb sandwich structure, and analyzes the influence of different repair methods on bonding quality, strength, weight and air permeability of sandwich structure. The results show that all of the repair method can meet the demand of strength and quality. Scarf repair method will not affect the structure breathability and has lower weight increment. After exhausting the air within the sample, it takes 2 seconds to recover. Meanwhile, the lateral positioning glue injection repair method has less influence on the air permeability of the structure higher than 4.5 mm but adds more weight. After exhausting the air within the sample, it takes 4 seconds to recover. The vertical glue injection repair method has the most significant effect on breathability and the most weight increasing due to the adhesive filling of 1/3 honeycomb grid within repair area. After exhausting the air within the sample, it takes 9 seconds to recover. The conclusion obtained in this paper can provide some reference for the repair of the honeycomb sandwich structures.

Key words: honeycomb sandwich structure, face-core deboning, defect, repair, air permeability, composites

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