摘要
通过落锤试验研究了不同韧性环氧树脂对芳纶—玻璃纤维混杂复合材料层合板和玻璃纤维复合材料层合板的重复低速冲击行为及损伤机理。结果表明:芳纶—玻璃纤维混杂复合材料层合板吸能效率较高,能够有效提高复合材料抗冲击能力;高韧环氧树脂抵抗重复冲击的能量更高,且冲击次数远高于低韧性环氧层合板;确定了低速冲击损伤的3个损伤阈值即“反弹”“临界穿孔”和“穿孔”,为进一步优化复合材料抗冲击性能提供研究依据。
The repeated low-speed impact behavior and damage mechanism of epoxy resins with different toughness on aramid-glass fiber hybrid composite laminates and glass fiber composite laminates were studied by falling dart impact test.The results show that aramid-glass hybrid composite laminates have higher energy absorption efficiency,which can effectively improve the impact resistance of composites;high-toughness epoxy resins have higher energy resistance to repeated impacts and the number of impacts is much higher than that of low-toughness epoxy laminates;Three damage thresholds for low-speed impact damage,namely"rebound","critical perforation"and"critical damage mechanism",have been determined,and"critical perforation"and"perforation"are determined,providing a research basis for further optimizing the impact resistance of composites.
作者
刘晓涵
吕佳乐
刘丽
李树茂
范朝劲
杨显昆
LIU Xiaohan;LYU Jiale;LIU Li;LI Shumao;FAN Zhaojin;YANG Xiankun(Harbin FRP Institute Co.,Ltd.,Harbin 150028;Harbin Institute of Technology,Harbin 150001;AECC Hunan Aviation Power plant Research Institute,Zhuzhou 412002)
出处
《先进无机纤维》
2025年第3期7-11,共5页
Advanced Inorganic Fibers
基金
复合材料/钢混合齿轮应用技术研究(KY-1044-2023-0426)
碳纤维复合材料机匣应用技术研究(KY-1044-2023-0416)。
关键词
混杂纤维
低速冲击
冲击损伤
重复冲击
损伤评估
hybrid fiber
low-speed impact
impact damage
repeated impact
damage assessment
作者简介
刘晓涵(1995-),男,助理工程师。主要从事复合材料界面工艺设计方面的研究。
