复合材料科学与工程 ›› 2021, Vol. 0 ›› Issue (5): 104-109.DOI: 10.19936/j.cnki.2096-8000.20210528.016

• 应用研究 • 上一篇    下一篇

配合间隙对蜂窝夹层结构板芯胶接质量的影响与研究

刘志杰, 张艳芳, 刘安黎, 冷卫红, 何凯   

  1. 成都飞机工业公司复合材料加工厂,成都610091
  • 收稿日期:2020-07-22 出版日期:2021-05-28 发布日期:2021-08-04
  • 作者简介:刘志杰(1981-),男,硕士,高级工程师,主要从事先进复合材料成型工艺方面的研究。

RESEARCH ON THE EFFECT OF THE FIT CLEARANCES ON THE SKIN/CORE BOND OF THE HONEYCOMB SANDWICH STRUCTURE

LIU Zhi-jie, ZHANG Yan-fang, LIU An-li, LENG Wei-hong, HE Kai   

  1. Composite Material Processing Plant of Chengdu Aircraft Industry Company, Chengdu 610091, China
  • Received:2020-07-22 Online:2021-05-28 Published:2021-08-04

摘要: 设计制作了一系列带有不同配合间隙的蜂窝夹芯结构试验件,并对试验件的内部性能和机械性能进行了测试,分析了配合间隙对蜂窝夹层结构胶接性能的影响。研究发现当蜂窝芯与面板的配合间隙大于胶膜的厚度时就会发生板芯脱粘;当使用发泡胶对配合间隙部位进行局部补偿时,可以获得合格的板芯胶接质量,且不降低结构的机械性能;对配合间隙使用胶膜校验检测时,低真空度有利于校验结果的可靠性,从而确保板芯的胶接质量;且蜂窝芯型面加工成阶梯状相比斜平面更有利于板芯胶接的质量。

关键词: 蜂窝夹层, 配合间隙, 蜂窝型面, 真空度, 板芯胶接, 复合材料

Abstract: To study the effect of the fit clearances on the skin/core bond, a series of composite sandwich samples with different artificial fit clearances were designed and fabricated, their quality of the skin/core bond was checked by ultrasonic C scan and mechanical performances were measured and analyzed by testing machine. The results of clearance checking were recorded and shot to get a further understanding about the effect of the fit clearance. It is found that the skin/core debond occurred when the fit clearance was thicker than the thickness of the adhesive. A good skin/core bond could be obtained when the foaming adhesive was used to fill the fit clearance as the compensatory adhesive. The reliability of the test to check the clearance depended on the vacuum degree in the bag greatly. The profile of the honeycomb core was milled into steps, which was more beneficial to the skin/core bond than the oblique plane machined.

Key words: honeycomb sandwich, fit clearance, profile, vacuum degree, core bonding, composites

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