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

ZHANG Dongliang; XUE Xiangchen; LIANG Xianzhu; ZHAN Lihua; YANG Xiaobo; ZHENG Xiaoling

doi:10.13801/j.cnki.fhclxb.20200323.002

Volume 37 Issue 12

Dec. 2020

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ZHANG Dongliang, XUE Xiangchen, LIANG Xianzhu, et al. Experimental analysis of the causes of skin wrinkles below the radius filler of hat-stiffened skins[J]. Acta Materiae Compositae Sinica, 2020, 37(12): 3064-3070. doi: 10.13801/j.cnki.fhclxb.20200323.002

Citation:

ZHANG Dongliang, XUE Xiangchen, LIANG Xianzhu, et al. Experimental analysis of the causes of skin wrinkles below the radius filler of hat-stiffened skins[J]. Acta Materiae Compositae Sinica, 2020, 37(12): 3064-3070. doi: 10.13801/j.cnki.fhclxb.20200323.002

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

doi: 10.13801/j.cnki.fhclxb.20200323.002

1.
AVIC Composite Company LTD, Beijing 101300, China
2.
College of Mechanical and Electrical Engineering, Central South University, Changsha 410083, China
3.
COMAC Shanghai Aircraft Design and Research Institute, Shanghai 201210, China

Received Date: 2020-02-04
Accepted Date: 2020-03-07

Available Online: 2020-03-23

Publish Date: 2020-12-15

Abstract

Abstract

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.
- hat-stiffened skins,
- radius filler,
- skin wrinkles,
- pressure difference,
- resin flow
Long Abstrsct
Innovation Points

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References(26)

References

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