碳散布管编织合复合材料的重复冲击性能,具有抗三明治结构
Minrui Jia1, Jingna Su2,3, Ao Liu2,3
1Engineering Teaching Practice Training Center, Tiangong University, Tianjin 300387, China.
Polymers
|October 16, 2025
概括
这项研究开发了一种抗三明治复合材料,使用用于航空航天应用的散布拉布织物 (STW) 和非织物 (NW) 料. 优化的结构增强了抗冲击性和能量吸收性,这对于高性能材料至关重要.
科学领域:
- 材料科学 材料科学 材料科学
- 航空航天工程 航空航天工程
- 复合材料 复合材料 复合材料
背景情况:
- 扩展拉织物 (STWs) 具有薄层特性,高纤维强度利用率和可设计性,使其适用于航空航天应用.
- 航空航天需要具有高特异强度和模量的材料,需要先进的复合材料设计.
研究的目的:
- 为航空航天应用设计和评估具有高特异性承载能力的抗三明治复合结构.
- 调查结构设计参数对复合材料机械性能和抗冲击性能的影响.
主要方法:
- 制造一种抗三明治复合材料,其核心层是分散拉织物 (STW) 和混合STW/非织物 (NW) 毛表面层.
- 进行重复冲击测试,以评估抗冲击刚度,能量吸收和承载能力.
- 分析核心层厚度比率和表面层混合比率对材料性能的影响.
主要成果:
- 增加核心层厚度比率提高了抗冲击刚度.
- 在表面层中增加NW的比例提高了能量吸收,但降低了承载硬度和强度.
- 一种优化的复合材料 (2:1核心:表面厚度比, 3:1混合表面比) 实现了17.43 kN的峰值冲击负荷,并且在50 J时承受了20次冲击而没有透.
结论:
- 设计的抗三明治复合材料在航空航天应用中表现出优越的反复冲击阻力.
- 结构优化是平衡耐冲击复合材料能量吸收和承载能力的关键.
- 故障模式涉及渐进的界面裂纹和核心层骨折,为进一步的材料开发提供了洞察力.
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