摘要: |
为了提升植物纤维增强复合材料的冲击性能,采用亚麻纤维增强环氧树脂(FFRP)与具有较高韧性的铝合金薄板进行层间混杂,制得亚麻纤维铝合金层合板(FFML);另外,为了提升铝合金薄板表面积及其与树脂基体的界面结合能力,对铝合金薄板进行了一系列表面处理,并与FFRP层合板进行了对比试验.结果表明:铝合金薄板可以有效提升植物纤维增强复合材料的初始刚度、最大冲击载荷及吸收能,并使其破坏模式从脆性破坏转变为塑性破坏;与FFRP层合板相比,经表面处理过的FFML最大冲击载荷与吸收能量分别提升了136%和58%,损伤面积下降了84%. |
关键词: 植物纤维 纤维金属层合板 层间界面 低速冲击 能量吸收 |
DOI:10.3969/j.issn.1007-9629.2022.08.009 |
分类号:TU599 |
基金项目:国家自然科学基金资助项目(11872279) |
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Low Velocity Impact Performance of Plant Fiber Metal Laminates |
ZHAO Yiqiao, YU Tao, GUO Yichun, SHEN Yiou
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School of Aerospace Engineering and Applied Mechanics, Tongji University, Shanghai 200092, China
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Abstract: |
Flax fiber fabric and aluminum alloy sheet with relative high toughness were hybridized interlaminar in order to fabricate plant fiber metal laminate(FML), which promoted the impact properties of the composites. A series of surface treatments were carried out on aluminum alloy sheet to increase the specific surface area and enhance the interlayer bonding ability with matrix. The results show that the metal layer can effectively improve the initial stiffness, maximum impact load and energy absorption capacity of the composite, and change the failure mode of the composite from brittle failure to plastic failure. Compared with the flax fiber reinforced composite(FFRP)laminate, the maximum impact load and absorbed energy of fabricate flax fiber metal laminate(FFML) increase by 136% and 58%, respectively, and the damage area decreases by 84%. |
Key words: plant fiber fiber metal laminate interlayer interface low velocity impact energy absorption |