A repair efficiency evaluation framework for the honeycomb microwave absorbing structure

Yan, Han; Xuan, Shanyong; Fan, Xin; Shan, Yimeng; Xu, Xiaoyao; Yao, Xuefeng

doi:10.1016/j.compscitech.2024.110471

Cited by 3 publications

(1 citation statement)

References 27 publications

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“…Numerous materials with unique structures exhibit MA properties surpassing those of natural materials, especially EAB [ 24 – 26 ]. The honeycomb structure has gained prominence in current research due to its lightweight and high-strength characteristics [ 27 , 28 ]. Impedance matching and attenuation capabilities are pivotal considerations in determining MA properties.…”

Section: Introductionmentioning

confidence: 99%

Designing Symmetric Gradient Honeycomb Structures with Carbon-Coated Iron-Based Composites for High-Efficiency Microwave Absorption

Zhang,

Yang,

Xin

et al. 2024

Nano-Micro Lett.

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The impedance matching of absorbers is a vital factor affecting their microwave absorption (MA) properties. In this work, we controllably synthesized Material of Institute Lavoisier 88C (MIL-88C) with varying aspect ratios (AR) as a precursor by regulating oil bath conditions, followed by one-step thermal decomposition to obtain carbon-coated iron-based composites. Modifying the precursor MIL-88C (Fe) preparation conditions, such as the molar ratio between metal ions and organic ligands (M/O), oil bath temperature, and oil bath time, influenced the phases, graphitization degree, and AR of the derivatives, enabling low filler loading, achieving well-matched impedance, and ensuring outstanding MA properties. The MOF-derivatives 2 (MD2)/polyvinylidene Difluoride (PVDF), MD3/PVDF, and MD4/PVDF absorbers all exhibited excellent MA properties with optimal filler loadings below 20 wt% and as low as 5 wt%. The MD2/PVDF (5 wt%) achieved a maximum effective absorption bandwidth (EAB) of 5.52 GHz (1.90 mm). The MD3/PVDF (10 wt%) possessed a minimum reflection loss (RLmin) value of − 67.4 at 12.56 GHz (2.13 mm). A symmetric gradient honeycomb structure (SGHS) was constructed utilizing the high-frequency structure simulator (HFSS) to further extend the EAB, achieving an EAB of 14.6 GHz and a RLmin of − 59.0 dB. This research offers a viable inspiration to creating structures or materials with high-efficiency MA properties.

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Section: Introductionmentioning

confidence: 99%

Designing Symmetric Gradient Honeycomb Structures with Carbon-Coated Iron-Based Composites for High-Efficiency Microwave Absorption

Zhang,

Yang,

Xin

et al. 2024

Nano-Micro Lett.

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Typical failure modes and corresponding repairing methods of woven lattice sandwich composites

Li,

Shi,

Bai

et al. 2024

Polymer Composites

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The woven lattice sandwich composites (WLSCs) are susceptible to damage during service, which leads to a decline in their mechanical properties. Therefore, it is crucial to develop repair methods that specifically target the mechanical properties of WLSCs. In this study, repair techniques for the common types of skin and core damage in WLSCs were propose. The repair process begins with identifying the type of structural damage and removing the damaged section. Subsequently, the skin and core layers are repaired accordingly. The mechanical properties before and after repair are then compared through experimental evaluations. The results demonstrate that the carrying capacity of the repaired WLSCs is 85% higher than that of the original, unrepaired structure using the selected repair method.Highlights Typical damage modes of woven lattice sandwich composites were classified. Repairing methods are proposed for woven lattice panels based on damage modes. Core‐foaming and skin patch adhering perfectly rehabilitate the damaged sandwich. Bearing capacity of the repaired sandwich slightly surpasses its original structure.

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3D-Printed (CoCrFeMnNi)3O4@C-GR dual core–shell composites: Multilevel control and mechanisms of microwave absorption performance

Yan,

Ye,

et al. 2024

Chemical Engineering Journal

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A repair efficiency evaluation framework for the honeycomb microwave absorbing structure

Cited by 3 publications

References 27 publications

Designing Symmetric Gradient Honeycomb Structures with Carbon-Coated Iron-Based Composites for High-Efficiency Microwave Absorption

Designing Symmetric Gradient Honeycomb Structures with Carbon-Coated Iron-Based Composites for High-Efficiency Microwave Absorption

Typical failure modes and corresponding repairing methods of woven lattice sandwich composites

3D-Printed (CoCrFeMnNi)3O4@C-GR dual core–shell composites: Multilevel control and mechanisms of microwave absorption performance

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