编织复合材料受到脉冲电流的影响减轻冲击损伤
Yan Li1, Fusheng Wang2, Chenguang Huang3
1School of Mechanics, Civil Engineering and Architecture, Northwestern Polytechnical University, 710129, Xi'an, PR China.
Nature communications
|August 19, 2023
概括
脉冲电流的应用有效地减少了3D直角编织复合材料的损伤,通过增强机械性能和创造抗冲击效应. 这项研究揭示了一种新的损害减少机制,用于提高材料弹性.
科学领域:
- 材料科学 材料科学 材料科学
- 机械工程 机械工程
- 电磁学 电磁学 电磁学 电磁学
背景情况:
- 3D直角编织复合材料在各种行业中越来越突出.
- 在极端负荷下提高这些复合材料的损伤耐受性仍然是一个关键的挑战.
- 现有的战略往往只关注结构性改造.
研究的目的:
- 通过整合结构和电磁性质,为3D直角编织复合材料提出和研究一种新的损害减少策略.
- 了解脉冲电流对损坏机制和机械行为的影响.
- 为分析复杂的相互作用开发一个多领域的合损害模型.
主要方法:
- 设计了一个集成的实验平台,包括一个电源系统,掉落测试机器和数据采集.
- 进行了实验,以评估脉冲电流和冲击力对复合材料损坏的影响.
- 开发了一种多场合损伤模型,以模拟温度,电流和损伤演变.
主要成果:
- 发现脉冲电流的应用显著减少了分层损伤和残留变形.
- 通过横向线压缩,并行电流的碳纤维增强了机械性能.
- 微裂纹的形成和线的变形导致了电流的重新分配和通过自场相互作用的抗冲击效应.
结论:
- 该研究表明,通过利用组合的结构和电磁效应,对3D直角编织复合材料提供了可行的减损策略.
- 这些发现阐明了减少损害的潜在机制,涉及当前的再分配和自我场相互作用.
- 这项研究为提高先进复合材料的损伤耐受性和弹性提供了一个有希望的方法.
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