低速冲击和冲击后残余曲性质的凯弗拉/EP三维角度间锁复合材料三维角度间锁复合材料
Juanjuan Shi1, Yanwen Guo1, Xiaomei Huang1
1School of Textile and Clothing, Nantong University, Nantong 226007, China.
Materials (Basel, Switzerland)
|April 9, 2024
概括
这项研究制造了不同密度的Kevlar/EP复合材料,以评估低速度冲击阻力. 较高的和密度提高了冲击性能,为设计耐用,抗冲击结构提供了洞察力.
科学领域:
- 材料科学 材料科学 材料科学
- 复合材料 复合材料 复合材料
- 机械工程 机械工程
背景情况:
- 与传统织物相比,三维角度互锁织物提供了增强的机械性能.
- 凯弗拉/环氧 (EP) 复合材料用于需要高强度与重量比和抗冲击性能的应用.
研究的目的:
- 为了研究三维角度互锁凯弗拉/EP复合材料的低速度撞击行为.
- 为了评估曲线和织物密度对冲击性能的影响.
- 为了比较这些复合材料与平面织物对应材料的抗冲击性能.
主要方法:
- 使用1000D凯弗拉丝材制造五种三维角度互锁面料.
- 通过真空辅助成型制备凯弗拉/EP复合材料.
- 低速冲击测试,使用不同的冲击能量,冲击器形状 (圆形,半球形,圆柱形) 和冲击器直径.
- 对损伤面积,深度和裂长度进行分析,以评估性能.
- 撞击后剩余屈曲强度的测量.
主要成果:
- 冲击性能受到和密度,冲击能量和冲击器形状的显著影响.
- 形冲击器主要导致纤维骨折,而半球冲击器导致纤维树脂脱节.
- 圆柱形冲击器导致了轻微的树脂碎片.
- 其余的屈曲强度根据撞击条件和织物结构而异.
结论:
- 和的密度显著影响三维角度互锁凯弗拉/EP复合材料的抗冲击能力.
- 了解不同冲击条件下的故障模式对于材料选择和设计至关重要.
- 这些发现为优化抗冲击结构和推进这些复合材料的工程应用提供了理论基础.
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