Quality Analysis of Flexible Molding Process for Composite Wing Skin

doi:10.3901/JME.2022.20.198

Abstract

Abstract: In order to improve the flexible forming quality of composite wing skins, the law of interaction between different thicknesses and types of indentation suppression pads and the molding quality of composite wing skins were carried out. It was shown that as the thickness of the silicone is 2.0 mm, the dimples on the surface of the composite wing skin completely eliminated, and the average profile error is less than 1.36 mm, it is decreased by 26.88%. As the thickness of the nitrile rubber is 1.5 mm, the dimples on the surface of the composite wing skin completely eliminated, and the average profile error is less than 0.87 mm, it is decreased by 53.23%. This study revealed that the indentation suppression pad with softer material can effectively inhibit indentation and reduce the profile error, and improve the molding quality of the composite components. Excessive thickness of the indentation suppression pad will lead to increased deviation of the skin profile of the fiber composite wing. This work has accumulated basic data for the flexible molding of aerospace composite wing skins.

Key words: composite wing skin, multi-point flexible mold, molding process, molding quality

CLC Number:

TG156

HAN Qigang, SHAO Ruowei, LIANG Ce, HAN Jincheng, WANG Yuanhao, LI Bo. Quality Analysis of Flexible Molding Process for Composite Wing Skin[J]. Journal of Mechanical Engineering, 2022, 58(20): 198-205.

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