Multi-objective optimization design of radar absorbing sandwich structure

Chen, Mingji; Pei, Yongmao; Fang, Daining

doi:10.1007/s10483-010-0307-z

Cited by 14 publications

(9 citation statements)

References 22 publications

(24 reference statements)

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“…However, in TM polarization, the −10 and −9 dB absorption bandwidth rarely change with the incident angle increased ( Figure 6B). The reflectivity is smaller than −8 dB in the full band (2)(3)(4)(5)(6)(7)(8)(9)(10)(11)(12)(13)(14)(15)(16)(17)(18) and in the five chosen tested incident angles. Thus, the incident angle threshold of effective absorption for CFRMM in TM polarization is larger than 60 .…”

Section: Resultsmentioning

confidence: 95%

“…Microwave absorbing materials (MAM) play an important role in electromagnetic compatibility, electromagnetic battle, and stealth technology. [1][2][3][4] Recently, more and more researchers take interests in the properties of MAM and exertion of their microwave absorbing (MA) potential. In view of the application of MAM coatings, they not only need to exhibit small reflection over a large frequency range, but also should be mechanically resistant in harsh environment.…”

Section: Introductionmentioning

confidence: 99%

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Multifunctional carbon fiber reinforced multilayered metastructure with broadband microwave absorption and effective mechanical resistance

et al. 2021

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Metastructure is an innovative structure form to improve broadband microwave absorption. However, without reliable mechanical properties, it is difficult to apply metastructure absorbers in realistic application scenarios. Herein, a multifunctional carbon fiber reinforced multilayered metastructure (CFRMM) is proposed and fabricated through the principles of multiscale design, gradient structure design, and metastructure design. The multiwall carbon nanotube (MWCNT)/carbonyl iron (CI)/epoxy resin(EP) nano lossy composite was integrated with the patterned resistive films (PRF) to form a gradient metastructure. Carbon fiber (CF) cloth was incorporated into the structure to enhance mechanical resistance. The CFRMM achieves −10 dB absorption bandwidth in frequency bands of 2-4.3 GHz and 7.02-18 GHz with maximum absorption of −17.4 dB. The −9 dB absorption bandwidth was covered in the full band 2-18 GHz. The CFRMM exhibits excellent mechanical properties with equivalent tensile strength and flexural strength of 75.77 and 408.43 MPa, respectively. The large tensile fracture strain of 24% reveals the good toughness of the metastructure. Broadband microwave absorption and effective load bearing integrated in one structure make the CFRMM more promising for applications in the future.

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Section: Resultsmentioning

confidence: 95%

Section: Introductionmentioning

confidence: 99%

Multifunctional carbon fiber reinforced multilayered metastructure with broadband microwave absorption and effective mechanical resistance

et al. 2021

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“…The experiments suggested that honeycomb panels of 18 mm and 20 mm thickness have a better performance in radar absorption than the panels with 13 mm thickness. This method was also applied by Chen et al to make radar‐absorbing lattice grids. Square‐honeycomb and triangular‐honeycomb structures were studied including the role of cell dimension and panel thickness.…”

Section: Modern Honeycombsmentioning

confidence: 99%

Sandwich Structures with Prismatic and Foam Cores: A Review

Xiong

Mousanezhad³

et al. 2018

Adv Eng Mater

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This article provides a comprehensive review of recent research efforts on the development and characterization of sandwich structures with corrugated, honeycomb, and foam cores. The topics discussed in this review article include aspects of core-face bonding and reinforcement, enhancement of core mechanical properties and panel performance (including the role of structural hierarchy), and multifunctional advantages offered by different core constructions. In addition, the review discusses potential applications, including in morphing wing design, impact resistance, and ultralightweight applications. Future research directions are discussed.

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“…Chen et al . reported a lightweight microwave absorbing structure with two dimensional composite lattice cores, which can be regarded as an effective absorber with a wider absorption band 15 . Kim et al .…”

Section: Introductionmentioning

confidence: 99%

Microwave properties of the single-layer periodic structure composites composed of ethylene-vinyl acetate and polycrystalline iron fibers

Guo

Huang

Xie

et al. 2017

Sci Rep

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A single-layer microwave absorbing structure composed of the ethylene-vinyl acetate (EVA) powders and polycrystalline iron fibers (PIFs) with thickness of 2 mm, which has a periodic array of circular hole, is designed and fabricated using the mechanical method. We show that the reflection loss (RL) can be easily adjusted by changing the geometric parameters. The maximum RL is 18.7 dB at 15 GHz, and the effective absorption bandwidth of 1.7 GHz for the diameter of circular hole is 10 mm, and enhanced to be 23.7 dB at 15.1 GHz with the corresponding bandwidth of 7.2 GHz when the diameter decreases to 5 mm. The measured absorption of the composite is in good accordance with the simulation results. Furthermore, the possible absorption mechanism of the composite has been discussed. Our results illustrate that the integration of frequency selective surface (FSS) with traditional PIFs can achieve a wide frequency range of a strong absorption.Microwave absorbing materials (MAMs) are extensively utilized to absorb electromagnetic wave effectively and convert electromagnetic energy into heat or make electromagnetic wave disappear by interference 1 . Traditional MAMs such as various shapes of spongy absorbers in darkroom and stealthy coating for aircraft have been well developed 2-8 . In past decades, the composites containing different kinds of micro or nano components for microwave absorption are fabricated and tested in laboratories 9-12 . However for the traditional MAMs or other novel MAMs, such as carbon black, ferrites and metals, they all still have some disadvantages like high density, narrow band and low absorption. These disadvantages will hamper their potential applications in cloaking, lightweight absorbers. Therefore to develop more advanced MAMs with low density, broad and adjustable absorption band are in urgent.A frequency selective surface (FSS) is a two-dimensional planar periodic array that can be used to reflect or transmit electromagnetic waves selectively 13 . Traditional metallic FSSs are not suitable to fabricate MAMs due to low absorption at its resonant frequency, so a bonding is needed to attach metallic FSS to the dielectric slabs to make effective MAMs, but the increased weight and thickness will also hamper their potential applications. Then the FSSs made of polymer matrix composite materials have been proposed. For example, Huynen. I et al. fabricated the lightweight MAMs, which are composed of a metallic honeycomb and carbon nanotube-reinforced polymer foam. The results show that the enhanced absorption over a wide frequency range can be obtained 14 . Chen et al. reported a lightweight microwave absorbing structure with two dimensional composite lattice cores, which can be regarded as an effective absorber with a wider absorption band 15 . Kim et al. prepared the MAM composed of FSS screens and E-glass/epoxy composite using the printed circuit board method, which showed the good microwave absorption properties 16 . Khurram et al. prepared high performance MAMs by filling a thermoplastic res...

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Multi-objective optimization design of radar absorbing sandwich structure

Cited by 14 publications

References 22 publications

Multifunctional carbon fiber reinforced multilayered metastructure with broadband microwave absorption and effective mechanical resistance

Multifunctional carbon fiber reinforced multilayered metastructure with broadband microwave absorption and effective mechanical resistance

Sandwich Structures with Prismatic and Foam Cores: A Review

Microwave properties of the single-layer periodic structure composites composed of ethylene-vinyl acetate and polycrystalline iron fibers

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