增材制造的凯尔文泡的多功能性用于电磁波吸收和负载轴承
Jeongwoo Lee1, Dahyun Daniel Lim2, Jinwoo Park3
1School of Mechanical Engineering, Korea University, 02841, Seoul, Republic of Korea.
Small (Weinheim an der Bergstrasse, Germany)
|September 9, 2023
概括
工程孔隙结构提供轻量级的电磁波吸收. 本研究介绍了一种3D打印的凯尔文泡吸收器,它具有增强的机械性能,可用于多功能应用.
科学领域:
- 材料科学 材料科学 材料科学
- 电磁学 电磁学 电磁学 电磁学
- 机械工程 机械工程
背景情况:
- 轻质多孔结构对于电磁波 (EM) 吸收至关重要.
- 低密度结构的有限机械特性阻碍了可扩展性.
- 需要多功能材料,将电磁吸收和承载能力结合起来.
研究的目的:
- 开发一个可扩展的,增材制造的基于凯尔文泡的EM波吸收器 (KF-EMA).
- 为了实现同时吸收电磁波和轻量化承载能力.
- 调查设计参数对KF-EMA性能的影响.
主要方法:
- 利用增材制造来创建多层,3D打印的KF-EMA.
- 使用碳黑基复合材料进行了几何优化凯尔文泡 (KF) 结构.
- 调整设计参数,包括骨干结构和构成材料.
主要成果:
- 在5.818 GHz实现了>90%的吸收率 (平均95.89%,最大99.1%在15.8 GHz).
- 在低密度结构中保持了刚度和相对密度的压缩指数 (n=2) (≈200 kg m−3).
- 在曲占主导地位的格子结构中表现出恒定的相对刚性.
结论:
- 肯德基-EMA设计为多功能元材料提供了一个有前途的方法.
- 优化单元细胞参数可以实现机械增强的EM波吸收器.
- 这一战略促进了轻量级,高性能电磁波吸收器的开发.
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