Functional additive manufacturing of large-size metastructure with efficient electromagnetic absorption and mechanical adaptation

Ying Zhang, Pengzhen Zhao, Qin Lu, Yuhui Zhang, Han Lei, Chen Yu, Yixing Huang*, Jijun Yu

*此作品的通讯作者

科研成果: 期刊稿件文章同行评审

43 引用 (Scopus)

摘要

Broadband microwave absorption as a hot research topic plays important roles on electromagnetic compatibility, electromagnetic radiation protection and radar detection disguise. However, traditional molding method is difficult to fabricate large-size curving structures for broadband microwave absorption. Herein, the material extrusion with high-speed printing process was effective to manufacture large-size metastructures for broadband microwave absorption. The polylactic acid was mixed and extruded with nano pyrolytic carbon in high temperature to manufacture functional filaments with high dielectric loss. The printed metastructure integrated with 0.5 mm quartz fiber reinforced composite (QFRC) achieved −10 dB broadband microwave absorption in 3.03–18 GHz and effective load bearing performance in tensile and flexural tests. Severe impedance mismatch brought by QFRC was overcome by appropriate structure design and high-speed printing technique. The proposed design-manufacturing closed loop is a promising approach to fabricate aircraft skin with broadband microwave absorption performance and suitable aerodynamic properties for heavy unmanned aerial drones.

源语言英语
文章编号107652
期刊Composites Part A: Applied Science and Manufacturing
173
DOI
出版状态已出版 - 10月 2023

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