Experimental analysis of the causes of skin wrinkles below the radius filler of hat-stiffened skins

被引：0
|
作者：
Zhang D. [1 ]
Xue X. [1 ]
Liang X. [1 ]
Zhan L. [2 ]
Yang X. [2 ]
Zheng X. [3 ]
机构：
[1] AVIC Composite Company LTD, Beijing
[2] College of Mechanical and Electrical Engineering, Central South University, Changsha
[3] COMAC Shanghai Aircraft Design and Research Institute, Shanghai
来源：
Xue, Xiangchen (c31050201@sina.com) | 1600年 / Beijing University of Aeronautics and Astronautics (BUAA)卷 / 37期
关键词：
Hat-stiffened skins; Pressure difference; Radius filler; Resin flow; Skin wrinkles;
D O I：
10.13801/j.cnki.fhclxb.20200323.002
中图分类号：
学科分类号：
摘要：
The formation process and causes of the skin wrinkles under the radius filler were studied in the co-bonding process of the hat-stiffened skins of carbon fiber/epoxy resin composite with the pre-cured stiffener and uncured skin. The rheological properties of the resin of the prepreg were tested. The internal pressure distribution of the skin under the radius filler was monitored by pressure monitoring equipment, and the wrinkles were characterized by metallographic microscope. The results show that during the window period of the resin flow, the resin flows to the low-pressure area and aggregates, resulting in wrinkles when a pressure difference occurs inside the skin under the radius filler. Copyright ©2020 Acta Materiae Compositae Sinica. All rights reserved.
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页码：3064 / 3070
页数：6
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