EFFECT OF STRINGER FLANGE TAPER ON SKIN WRINKLE IN CO-BONDING PROCESS

Abstract

Abstract: In the process of forming a composite stiffened panel, there is a process of curing the stringer and then co-bonding with the uncured skin. This process requires to reduce the wrinkle of the skin at the edge of the stringer flange. In order to optimize the manufacturing process of the panel and improve the process stability of the product, the method of manufacturing the panel by tapering the flange of the stringer is explored. By sampling the wrinkle section and measuring the geometrical dimensions of the wrinkles by microscopic observation, the trend of wrinkling of the skin after different tapering angles was explored. The results show that the skin wrinkle can be significantly reduced after tapering the edge of the stringer, and the sharper the tapser is, the smaller the wrinkles are. According to the actual situation, after selecting a specific angle to chamfer the stringer flange, the amplitude of the skin wrinkle can be effectively controlled while simplifying the manufacturing process.

Key words: wrinkle, taper, chamfer, stringer, co-bonding, auxiliary material, bridge, composite

CLC Number:

TB332

XUE Xiang-chen, WANG Ben, YU Tian-qi, HU Jiang-bo. EFFECT OF STRINGER FLANGE TAPER ON SKIN WRINKLE IN CO-BONDING PROCESS[J]. Composites Science and Engineering, 2020, 0(4): 106-111.

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