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玻璃纤维板阵列增多层吸波复合结构

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本文将电路模拟吸波阵列与玻璃纤维介质板(FEPL)阵列结合,采用真空热压成型工艺制备了一种具有超宽带强吸波性能的多层复合结构.整个FEPL阵列复合结构的表面密度约为2.4 kg/m2,厚度约为10.0 mm.仿真和测量结果均表明,FEPL阵列可以明显改善吸波结构的斜入射角的稳定性,提高电磁吸收率,拓宽吸收带宽.在斜入射角40°～60°范围内,FEPL阵列显著提高了吸波复合结构的吸收性能,同时将相对带宽(FBW)拓宽了约9.1%;此外,它还将复合吸波结构正入射角的平均反射系数从-14.4 dB降低到了-25.7 dB,降低了约11.3 dB.本文所提出的玻璃纤维板阵列增多层吸波复合结构性能优异,制备工艺简单,适合实际工程应用.
A multilayered microwave absorbing composite structure enhanced by fiberglass enforced epoxy laminate array
A multilayered composite structure with ultra-wideband and strong microwave absorbing performance has been developed,which is prepared through vacuum bag molding process,and the fiberglass enforced epoxy laminate(FEPL)array on its surface is fabricated by computer numerical control(CNC)carving method.The surface density of the whole composite structure with FEPL array is about 2.4 kg/m2,and the thickness is about 10.0 mm.Both simulation and measurement results confirm that FEPL array can considerably improve stability of the incidence angle,increase absorptivity,and broaden the absorption bandwidth.The FEPL array enhances the oblique incidence performance of the composite structure ranging from 40° to 60°,while simultaneously expanding the fractional bandwidth(FBW)by approximately 9.1%.Moreover,it achieves a notable reduction in the average reflection coefficient at normal incidence,decreasing it by about 11.3 dB from-14.4 dB to-25.7 dB.High performance and simple preparation processes for composite structure indicate that it is suitable for practical engineering applications.

ultra-widebandmicrowave absorption compositesfiberglass enforced epoxy laminate arraycircuit-analog array

麻晢乂培、黎嘉乐、姜超

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Powder Metallurgy Research Institute,Central South University,Changsha 410083,China

State Key Laboratory of Powder Metallurgy,Central South University,Changsha 410083,China

超宽带 微波吸收复合材料 玻璃纤维板阵列 电路模拟吸波体

Initial Research Funding for Special Associate Professor of Central South University,ChinaScience and Technology Innovation Talents Program of Hunan Province,ChinaBasic Strengthening Research Subproject of ChinaPostgraduate Innovation Project of Hunan Province,China

2020450022021RC30032022-JCJQ-ZD-01-1CX 20220163

2024

10.1007/s11771-023-5528-9

中南大学学报(英文版)
中南大学

中南大学学报(英文版)

CSTPCDEI
影响因子：0.47
ISSN：2095-2899
年,卷(期)：2024.31(2)
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