Frequency insensitive electromagnetic absorption core-shell sandwich structure with excellent electromagnetic damage tolerance

IF 12.7 1区材料科学 Q1 ENGINEERING, MULTIDISCIPLINARY

Composites Part B: Engineering Pub Date : 2024-11-05 DOI:10.1016/j.compositesb.2024.111946

Yiming Zhao , Suli Xing , Changliang Li , Naifeng Yang , Yonglyu He , Ke Duan , Jianwei Zhang

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Abstract

The compatibility of broadband electromagnetic absorption and electromagnetic damage tolerance poses challenges to the regulation of electromagnetic response characteristics, which are typically restricted by the intrinsic dispersion of materials and strong resonant features of unit cell structures. In this work, triply-periodic-minimal-surfaces (TPMS) based gradient core-shell sandwich structure is proposed to address this challenge for its mathematical defined unique conductive pore structure. The reflection loss-frequency curve is less than −10 dB in 2–18 GHz frequency band, accompanied by two separate resonant absorption peaks at 2.4 GHz and 17.5 GHz. The reflection loss curve is insensitive to frequency in a wide frequency band of 4–14 GHz, using merely three kinds of absorbing materials. When the damage proportion is less than 40 %, effective electromagnetic absorption can be maintained in panel damage, core damage and penetrating damage modes, thanks to the extraordinary conduction-dissipation effect. Our study provides valuable insights for the design of damage tolerant electromagnetic absorption structures.

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具有优异电磁损伤耐受性的频率不敏感电磁吸收芯壳夹层结构

宽带电磁吸收和电磁损伤容限的兼容性对电磁响应特性的调节提出了挑战，而电磁响应特性通常受限于材料的固有色散和单胞结构的强共振特性。本研究提出了基于三周期最小面（TPMS）的梯度核壳夹层结构，通过数学定义的独特导电孔结构来应对这一挑战。其反射损耗-频率曲线在 2-18 GHz 频段内小于 -10 dB，并在 2.4 GHz 和 17.5 GHz 处伴有两个独立的共振吸收峰。在 4-14 GHz 的宽频带内，仅使用三种吸收材料，反射损耗曲线对频率不敏感。当损坏比例小于 40% 时，由于非凡的传导-耗散效应，在面板损坏、核心损坏和穿透损坏模式下都能保持有效的电磁吸收。我们的研究为容错电磁吸收结构的设计提供了宝贵的启示。

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来源期刊

Composites Part B: Engineering 工程技术-材料科学：复合

CiteScore

24.40

自引率

11.50%

发文量

784

审稿时长

21 days

期刊介绍： Composites Part B: Engineering is a journal that publishes impactful research of high quality on composite materials. This research is supported by fundamental mechanics and materials science and engineering approaches. The targeted research can cover a wide range of length scales, ranging from nano to micro and meso, and even to the full product and structure level. The journal specifically focuses on engineering applications that involve high performance composites. These applications can range from low volume and high cost to high volume and low cost composite development. The main goal of the journal is to provide a platform for the prompt publication of original and high quality research. The emphasis is on design, development, modeling, validation, and manufacturing of engineering details and concepts. The journal welcomes both basic research papers and proposals for review articles. Authors are encouraged to address challenges across various application areas. These areas include, but are not limited to, aerospace, automotive, and other surface transportation. The journal also covers energy-related applications, with a focus on renewable energy. Other application areas include infrastructure, off-shore and maritime projects, health care technology, and recreational products.