金属网对玻璃纤维增强复合材料低速冲击损伤特性的影响

复合材料科学与工程 ›› 2021, Vol. 0 ›› Issue (1): 58-64.

金属网对玻璃纤维增强复合材料低速冲击损伤特性的影响

胡静, 蔡雄峰, 胡昂, 邓云飞^*

中国民航大学航空工程学院,天津300300

收稿日期:2019-12-30 出版日期:2021-01-28 发布日期:2021-01-25
通讯作者: 邓云飞(1982-),男,博士,副教授,研究方向为复合材料结构设计及力学性能测试,625599282@qq.com。
作者简介:胡静(1972-),女,硕士,教授,研究方向为航空维修工程。
基金资助:
国家自然科学基金(11702317);航空科学基金(2018ZF67011); 中央高校基本科研业务费资(3122017030)

INFLUENCE OF METAL MESH ON LOW-VELOCITY IMPACT DAMAGE CHARACTERISTICS OF GLASS FIBER REINFORCED COMPOSITES

HU Jing, CAI Xiong-feng, HU Ang, DENG Yun-fei^*

College of Aeronautical Engineering, Civil Aviation University of China, Tianjin 300300, China

Received:2019-12-30 Online:2021-01-28 Published:2021-01-25

摘要/Abstract

摘要： 为研究304不锈钢网对玻璃纤维编织复合材料低速冲击损伤特性的影响,利用落锤试验机分别对2 mm厚的不含、含一层和含三层304不锈钢网的玻璃纤维编织复合材料板进行5 J、20 J、40 J和60 J能量下的冲击实验,从层合板载荷峰值、最大凹陷位移、能量吸收和损伤机理等方面,分析不锈钢网对层合板抗冲击性能的影响规律。研究结果表明,当冲击能量未达到层合板击穿能量阈值前,载荷峰值和最大凹陷位移随着冲击能量的增大而增大。三层不锈钢网的加入使得层合板在较小凹陷位移时就能达到最大载荷,具有良好的抗冲击性能。层合板损伤形状呈十字形,损伤程度沿着厚度方向逐渐加深,背面中心点处损伤最为严重。当冲击能量超过层合板能量阈值时,中心区域损伤呈花瓣开裂状,主要损伤模式为纤维拉伸断裂和基体破碎、金属丝拉伸断裂。

关键词: 弹体, 玻璃纤维增强复合材料, 低速冲击, 损伤分析

Abstract: In order to investigate the influence of 304 stainless steel mesh on the low-velocity impact damage characteristics of glass fiber woven composite materials, the 2 mm thick glass fiber woven composite plates without and with one layer and three layers of 304 stainless steel mesh were impacted by drop-weight tester at 5 J, 20 J, 40 J, and 60 J energies, and also the influence of stainless steel mesh was analyzed on the aspects of load peak, maximum depression displacement, energy absorption, and damage mechanism. The results show that the peak load and the maximum depression displacement increase with the increase of the impact energy before the impact energy reaches the energy threshold of perforation. The addition of a three-layer stainless steel mesh enables the laminate to reach its maximum load at a small depression displacement, and has best impact resistance. The failure mode of the laminated plate is cruciform, the damage degree gradually deepens along the thickness, the damage degree is gradually serious along the thickness direction, and the damage is the most serious at the center point of the back surface. When the impact energy exceeds the energy threshold, the damage in the center area is petaling. The domain damage modes of plate are fiber tensile fracture and matrix fracture, and metal wire tensile fracture.

Key words: projectile, glass fiber reinforced composite, low velocity impact, damage analysis

中图分类号:

TB332

胡静, 蔡雄峰, 胡昂, 邓云飞. 金属网对玻璃纤维增强复合材料低速冲击损伤特性的影响[J]. 复合材料科学与工程, 2021, 0(1): 58-64.

HU Jing, CAI Xiong-feng, HU Ang, DENG Yun-fei. INFLUENCE OF METAL MESH ON LOW-VELOCITY IMPACT DAMAGE CHARACTERISTICS OF GLASS FIBER REINFORCED COMPOSITES[J]. COMPOSITES SCIENCE AND ENGINEERING, 2021, 0(1): 58-64.

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