碳/芳纶纤维混杂复合材料层合板弹道冲击特性研究

doi:10.19936/j.cnki.2096-8000.20231228.013

复合材料科学与工程 ›› 2023, Vol. 0 ›› Issue (12): 96-104.DOI: 10.19936/j.cnki.2096-8000.20231228.013

碳/芳纶纤维混杂复合材料层合板弹道冲击特性研究

刘亚婷^1,2, 解江^1,2*, 牟浩蕾^1,2, 冯振宇^1,2

1.中国民航大学安全科学与工程学院,天津 300300;
2.民航航空器适航审定技术重点实验室,天津 300300

收稿日期:2022-10-20 出版日期:2023-12-28 发布日期:2024-02-26
通讯作者: 解江(1982—),男,博士,副研究员,主要从事航空器结构动力学方面的研究,xiejiang5@126.com。
作者简介:刘亚婷(1996—),女,硕士研究生,主要从事复合材料冲击动力学方面的研究。
基金资助:
多层介质复合板弹道冲击性能的多尺度分析技术研究(201941067001)

Research on ballistic impact characteristics of carbon/aramid fiber hybrid laminates

LIU Yating^1,2, XIE Jiang^1,2*, MOU Haolei^1,2, FENG Zhenyu^1,2

1. School of Safety Science and Engineering, Civil Aviation University of China, Tianjin 300300, China;
2. Key Laboratory of Civil Aviation Aircraft Airworthiness Certification Technology, Tianjin 300300, China

Received:2022-10-20 Online:2023-12-28 Published:2024-02-26

摘要/Abstract

摘要： 为了探究碳纤维、芳纶纤维、碳/芳纶纤维混杂平板的抗冲击特性,分别对T700SC-12K-50C碳纤维层合板、1000D629T芳纶纤维层合板以及两种碳/芳纶纤维混杂平板进行弹道冲击试验,通过抗冲击性能评估参数对其弹道冲击特性进行评估;同时借助CT扫描结果分析了层合板的内部损伤情况,揭示了其破坏吸能机理,并进一步探究了纤维混杂对弹道冲击特性的影响。结果表明:随着弹体入射速度的增大,平板的能量吸收能力升高,直至饱和达到峰值。当弹体入射速度超过弹道极限时,随着入射速度的升高,平板的吸能量保持稳定或略有下降,而能量吸收率逐步下降。与纯碳纤维平板相比,纯芳纶纤维平板的抗冲击性能更优,将纯芳纶纤维平板两侧替换为碳纤维铺层,可有限提高整体的吸能效果,但替换的碳纤维占比较多时,反而使平板的抗冲击性能下降。在圆柱弹体冲击下,纯碳纤维平板为切孔型损伤,以剪切破坏为主,且损伤集中在弹体冲击部位附近。纯芳纶纤维平板、碳/芳纶纤维混杂平板为炸裂型损伤,弹孔形貌靠近迎弹面区域呈圆孔状,在背弹面损伤区域呈锥状隆起。损伤形成过程分为挤压变形、剪切侵彻和拉伸侵彻三个阶段。

关键词: 碳/芳纶纤维混杂平板, 弹道冲击试验, 失效形貌, 损伤机理, 复合材料

Abstract: In order to explore the impact resistance characteristics of carbon fiber, aramid fiber and carbon/aramid fiber hybrid plates, ballistic impact tests were conducted on T700SC-12K-50C carbon fiber laminate, 1000D629T aramid fiber laminate and two kinds of carbon/aramid fiber hybrid plates respectively, and their ballistic impact characteristics were evaluated through the impact resistance evaluation parameters. At the same time, with the help of CT scanning results, the internal damage of the laminated plate was analyzed, the mechanism of energy absorption was revealed, and the influence of fiber hybrid on ballistic impact characteristics was further explored. The results show that the energy absorption capacity of the flat plate increases with the increase of the projectile incident velocity until the saturation reaches the peak value. When the projectile incident velocity exceeds the ballistic limit, the energy absorption of the flat plate remains stable or slightly decreases with the increase of the incident velocity, while the energy absorption rate gradually decreases. The impact resistance of the pure aramid fiber plate is better than that of the pure carbon fiber plate. Replacing the carbon fiber layer on both sides of the pure aramid fiber plate can improve the overall energy absorption effect, but the impact resistance of the plate decreases when more carbon fibers are replaced. Under the impact of cylindrical projectile, the damage of pure carbon fiber plate is notch type, mainly shear failure, and the damage is concentrated near the impact part of the projectile. The pure aramid fiber plate and carbon/aramid fiber hybrid plate are explosion damage. The shape of the bullet hole is round near the projectile attack surface, while the damage area on the projectile back surface is conical. The damage formation process includes three stages: extrusion deformation, shear penetration and tensile penetration.

Key words: carbon/aramid fiber hybrid plate, ballistic impact test, failure morphology, damage mechanism, composites

中图分类号:

TB332

刘亚婷, 解江, 牟浩蕾, 冯振宇. 碳/芳纶纤维混杂复合材料层合板弹道冲击特性研究[J]. 复合材料科学与工程, 2023, 0(12): 96-104.

LIU Yating, XIE Jiang, MOU Haolei, FENG Zhenyu. Research on ballistic impact characteristics of carbon/aramid fiber hybrid laminates[J]. COMPOSITES SCIENCE AND ENGINEERING, 2023, 0(12): 96-104.

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碳/芳纶纤维混杂复合材料层合板弹道冲击特性研究

Research on ballistic impact characteristics of carbon/aramid fiber hybrid laminates

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