低面内性能损伤的Z-pin增韧技术研究

doi:10.19936/j.cnki.2096-8000.20211128.010

复合材料科学与工程 ›› 2021, Vol. 0 ›› Issue (11): 62-68.DOI: 10.19936/j.cnki.2096-8000.20211128.010

低面内性能损伤的Z-pin增韧技术研究

严斌¹, 李向前², 尹明鑫¹, 刘维伟^1*, 陈巍², 马承燕¹

1.西北工业大学机电学院,西安710072;
2.中国航发上海商用航空发动机制造有限责任公司,上海200241

收稿日期:2021-03-23 出版日期:2021-11-28 发布日期:2021-12-13
通讯作者: 刘维伟(1970-),男,博士,副教授,主要从事先进复合材料结构设计与制造方面的研究,liuww@nwpu.edu.cn。
作者简介:严斌(1996-),男,硕士,主要从事复合材料层间增韧方面的研究。
基金资助:
中航工业商发改善铺层复材面内性能的Z-pin植入方式研究项目资助(MC050079);中航复材复合材料风扇叶片成型工艺关键技术研究项目资助(KF050056)

Study on Z-pin enhancement technology with low in-plane damage

YAN Bin¹, LI Xiang-qian², YIN Ming-xin¹, LIU Wei-wei^1*, CHEN Wei², MA Cheng-yan¹

1. School of Mechanical Engineering, Northwestern Polytechnical University, Xi'an 710072, China;
2. AECC Shanghai Commercial Aviation Engine Manufacturing Co., Ltd., Shanghai 200241, China

Received:2021-03-23 Online:2021-11-28 Published:2021-12-13

摘要/Abstract

摘要： 通过弯曲、拉伸试验研究了Z-pin预制孔植入工艺在降低复合材料层合板面内性能损伤方面的表现。对固化后的Z-pin增强试件进行损伤检测发现Z-pin预制孔植入工艺可显著降低Z-pin植入后造成的纤维卷曲、绕流稀释及断裂等初始损伤。试验结果显示直径为0.28 mm的Z-pin采用预制孔植入工艺植入试件后,试件拉伸、弯曲强度分别只降低了3.02%和3.33%,这表明Z-pin预制孔植入工艺可显著降低对试件面内性能的损伤;直径为0.18 mm的Z-pin采用预制孔植入工艺植入试件后,试件拉伸、弯曲强度分别只降低了1.69%和1.12%,这说明细小直径Z-pin在实现试件层间增韧的同时能进一步降低其对试件面内性能的损伤。此外,通过对试件失效机制的分析得出:合理设置Z-pin的排布方式、尽量使用细小直径Z-pin、试件铺层设计中尽量减少0°铺层的使用等都有利于减轻对试件面内性能的损伤。

关键词: Z-pin, 复合材料, 拉伸性能, 弯曲性能, 低损伤

Abstract: This article presents an experimental investigation on the efficiency of the Z-pin pre-hole insertion process in reducing the in-plane damage while improving the delamination resistance of carbon fibre/epoxy laminates. The results show that the Z-pin pre-hole insertion process could reduce the fiber crimp, flow dilution and fracture. Specifically, the tensile strength and flexural strength of the laminates reinforced with Z-pin(0.28 mm in-diameter) were only reduced by 3.02% and 3.33%, respectively. It shows that Z-pin pre-hole insertion process could significantly reduce the in-plane damage of Z-pinned laminates. Furthermore, the tensile strength and flexural strength of the laminates reinforced with Z-pin(0.18 mm in-diameter) were only decreased by 1.69% and 1.12%, respectively. It shows that fine Z-pin could further reduce the in-plane damage of Z-pinned laminates while achieving interlaminar toughening. In addition, through the analysis of the failure mechanism of Z-pinned laminates, it is concluded that the in-plane damage of the laminates could be reduced by reasonably setting the arrangement of Z-pin, using fine Z-pin and reducing the use of 0° ply in design of layer.

Key words: Z-pin, composite, tensile properties, flexural properties, low-damage

中图分类号:

TB332

严斌, 李向前, 尹明鑫, 刘维伟, 陈巍, 马承燕. 低面内性能损伤的Z-pin增韧技术研究[J]. 复合材料科学与工程, 2021, 0(11): 62-68.

YAN Bin, LI Xiang-qian, YIN Ming-xin, LIU Wei-wei, CHEN Wei, MA Cheng-yan. Study on Z-pin enhancement technology with low in-plane damage[J]. COMPOSITES SCIENCE AND ENGINEERING, 2021, 0(11): 62-68.

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低面内性能损伤的Z-pin增韧技术研究

Study on Z-pin enhancement technology with low in-plane damage

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