Design and verification of the square convex surface multilayer radar absorbing structure based on additive manufacturing

IF 3.5 3区材料科学 Q1 ENGINEERING, MECHANICAL

Journal of Sandwich Structures & Materials Pub Date : 2024-09-04 DOI:10.1177/10996362241278222

Do-Hyeon Jin, Dong-Jin Park, Jung-Ryul Lee, Joon-Mo Ahn

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引用次数: 0

Abstract

This paper presents a novel approach to addressing electromagnetic property variations in 3D printed structures using additive manufacturing (AM). Utilizing continuous fiber 3D printing, the focus is on designing and fabricating a square convex surface multilayer radar absorbing structure (RAS) tailored for obliquely incident electromagnetic (EM) waves. Variations in complex permittivity due to structural shape-influenced changes in nozzle paths in AM-fabricated 3D printed structures are observed. To counter this, a ‘Process Permittivity Correction Method’ is developed, enhancing design and fabrication accuracy. Before optimizing each structure of the RAS, the process permittivity, which varies according to the structural shape and the set nozzle paths, was applied in the design. The optimized RAS, considering both TE and TM modes at a 60° incident angle, showed a high correlation between the trends of interpreted and measured absorption performance. This approach effectively corrects electromagnetic property variations in 3D printed structures, ensuring consistency between design and manufacturing while maintaining EM properties and absorption performance.

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基于增材制造的方形凸面多层雷达吸波结构的设计与验证

本文介绍了一种利用增材制造（AM）解决三维打印结构中电磁特性变化的新方法。利用连续纤维三维打印技术，重点设计和制造一种专为斜入射电磁波（EM）量身定制的方形凸面多层雷达吸收结构（RAS）。在调幅制造的三维打印结构中，观察到由于结构形状影响喷嘴路径变化而导致的复介电常数变化。为解决这一问题，我们开发了一种 "工艺介电常数校正方法"，以提高设计和制造精度。在优化 RAS 的每个结构之前，在设计中应用了根据结构形状和设定喷嘴路径而变化的工艺介电常数。优化后的 RAS 同时考虑了 60° 入射角下的 TE 和 TM 模式，显示出解读趋势与测量吸收性能之间的高度相关性。这种方法可有效纠正 3D 打印结构中的电磁特性变化，确保设计与制造的一致性，同时保持电磁特性和吸收性能。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of Sandwich Structures & Materials 工程技术-材料科学：表征与测试

CiteScore

9.60

自引率

2.60%

发文量

审稿时长

7 months

期刊介绍： The Journal of Sandwich Structures and Materials is an international peer reviewed journal that provides a means of communication to fellow engineers and scientists by providing an archival record of developments in the science, technology, and professional practices of sandwich construction throughout the world. This journal is a member of the Committee on Publication Ethics (COPE).