High-temperature corrugated-core radar stealth Ni-plated glass/bismaleimide sandwich composites

IF 7.1 2区材料科学 Q1 MATERIALS SCIENCE, COMPOSITES Composite Structures Pub Date : 2025-08-01 Epub Date: 2025-04-09 DOI:10.1016/j.compstruct.2025.119185

Woo-Hyeok Jang , Changmin Seok , Dongjin Park , Jaewon Shim , Minsung Kim , Hyemin Kim , Chun-Gon Kim , Jungryul Lee , Youngwoo Nam

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Abstract

This study presents a high-temperature Corrugated-core Radar-Absorbing Sandwich Composite (CRASC) with stable electromagnetic (EM) wave absorption at temperatures up to 300 °C. The corrugated-core design facilitates broadband radar absorption and stable performance despite thermal fluctuations, achieving the goal of thermal insulation performance of the designed Thermal Gradient Insulation Multilayer (TGIM). Electromagnetic simulations analyzed the effect of variations in electromagnetic properties on the radar-absorbing capability of the structure. Based on these analyses, a radar-absorbing structure incorporating two corrugated cores was designed, and fabricated using an autoclave and a hot press. The − 10 dB bandwidth of the fabricated CRASC at room temperature was confirmed to be 5.8 to 17.2 GHz. The radar-absorbing performance of the fabricated specimens was evaluated in a furnace, with temperatures ranging from room temperature to 300 °C. These results confirmed that the − 10 dB bandwidth remained stable despite temperature variations while maintaining the wide absorption bandwidth and thermal insulation.

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高温波纹芯雷达隐身镀镍玻璃/双马来酰亚胺夹层复合材料

该研究提出了一种高温波纹芯雷达吸收夹层复合材料（CRASC），在高达300°C的温度下具有稳定的电磁波吸收。波纹芯设计有利于宽带雷达吸收，且在热波动情况下性能稳定，实现了设计的热梯度隔热多层（TGIM）的隔热性能目标。电磁仿真分析了电磁特性变化对结构吸波能力的影响。基于这些分析，设计了一种包含两个波纹芯的雷达吸波结构，并使用高压灭菌器和热压机制作。室温下制备的CRASC - 10 dB带宽为5.8 ~ 17.2 GHz。在室温至300°C的温度范围内，对制备的样品的雷达吸收性能进行了评估。这些结果证实，在温度变化的情况下，- 10 dB带宽保持稳定，同时保持了较宽的吸收带宽和绝热性。

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来源期刊

Composite Structures 工程技术-材料科学：复合

CiteScore

12.00

自引率

12.70%

发文量

1246

审稿时长

78 days

期刊介绍： The past few decades have seen outstanding advances in the use of composite materials in structural applications. There can be little doubt that, within engineering circles, composites have revolutionised traditional design concepts and made possible an unparalleled range of new and exciting possibilities as viable materials for construction. Composite Structures, an International Journal, disseminates knowledge between users, manufacturers, designers and researchers involved in structures or structural components manufactured using composite materials. The journal publishes papers which contribute to knowledge in the use of composite materials in engineering structures. Papers deal with design, research and development studies, experimental investigations, theoretical analysis and fabrication techniques relevant to the application of composites in load-bearing components for assemblies, ranging from individual components such as plates and shells to complete composite structures.