• CN:11-2187/TH
  • ISSN:0577-6686

机械工程学报 ›› 2019, Vol. 55 ›› Issue (23): 226-232.doi: 10.3901/JME.2019.23.226

• 数字化设计与制造 • 上一篇    

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一种熔融沉积3D打印的高性能超材料吸波结构

郭建勇, 梁庆宣, 江子杰, 周文卿, 陈天宁, 李涤尘   

  1. 西安交通大学机械工程学院 西安 710049
  • 收稿日期:2019-01-31 修回日期:2019-05-26 出版日期:2019-12-05 发布日期:2020-02-18
  • 通讯作者: 梁庆宣(通信作者),男,1980年出生,博士,副教授,博士研究生导师。主要研究方向为超材料及3D打印制造。E-mail:liangqx728@xjtu.edu.cn
  • 作者简介:郭建勇,男,1994年出生。主要研究方向为超材料吸波结构。E-mail:guojianyong@stu.xjtu.edu.cn;江子杰,男,1995年出生。主要研究方向为超表面设计和3D打印制造。E-mail:xiaotianern@stu.xjtu.edu.cn;周文卿,男,1995年出生,主要研究方向为超材料的金属非金属一体化成形制造。E-mail:a402189525@stu.xjtu.edu.cn;陈天宁,男,1956年出生,博士,教授,博士研究生导师。主要研究方向为超材料设计。E-mail:tnchen@xjtu.edu.cn;李涤尘,男,1964年出生,博士,教授,博士研究生导师。主要研究方向为增材制造与复合材料成型。E-mail:dcli@xjtu.edu.cn
  • 基金资助:
    国家自然科学基金资助项目(51575431)。

A High-performance Metamaterials Absorbing Structures Based on Fused Deposition Modeling

GUO Jianyong, LIANG Qingxuan, JIANG Zijie, ZHOU Wenqing, CHEN Tianning, LI Dichen   

  1. School of Mechanical Engineering, Xi'an Jiaotong University, Xi'an 710049
  • Received:2019-01-31 Revised:2019-05-26 Online:2019-12-05 Published:2020-02-18

摘要: 高性能超材料吸波结构是近年学术界和工程界研究的热点,它通过单元结构的周期阵列排布形成吸波超材料结构,实现超材料的吸波层与自由空间的阻抗匹配,大幅提高对电磁波的吸收率,在隐形技术、通信天线及微波成像等军事和民用领域具有广阔的应用前景。基于超材料阻抗匹配原理,提出了熔融沉积3D打印技术制备超材料吸波结构的方法,实现了一种由聚乳酸(Polylactic acid,PLA)单元空腔和具有优异电磁特性的蒸馏水复合组成的超材料结构的精确设计与制造,获得了在8.2~30.0 GHz电磁波频带内具有90%以上吸波率的高性能超材料吸波结构。研究表明该超材料结构还具有良好的极化无关和宽角度吸波特性。所设计制造的超材料吸波结构具有性能强、厚度薄、质量小等诸多优异的特性,为推动高性能吸波结构的深入研究提供了一种新的思路。

关键词: 超材料结构, 3D打印, 高性能, 吸波

Abstract: High-performance metamaterial absorbers have attracted enormous interests both in academia and industry in last few years. The metamaterial structures are formed by periodic unit cells that can realize impedance match between metamaterial absorbers and free space to enhance the electromagnetic absorption. Metamaterials can be widely used in various military or civil realm, such as stealth technology, communication antennas and microwave imaging. Based on impedance matching principle, a fabrication method based on the fused deposition modeling of 3D printing technology to achieve metamaterial absorbing structures is proposed. Metamaterial absorbers composed of 3D printed polylactic acid (PLA) based substrate with cavities and distilled water possessing excellent electromagnetic properties is precisely designed and fabricated. Finally, a high-performance absorber which shows an absorptivity higher than 90% over an ultra-broad band from 8.2 GHz to 30.0 GHz is acquired. It is also indicated that the metamaterial absorber is polarization independent and can maintain high absorptivity within a wide range of incidence angle. The absorbers proposed here with advantages of high performance, low profile, and light weight provide a novel method of design and fabrication which may promote the research on high-performance absorbing structures.

Key words: metamaterial structures, 3D printing, high-performance, microwave absorbing

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