Low-Profile Polymer Composite Radar Absorber Embedded With Frequency Selective Surface

Amudhu, Lekkaiyan Baskaran Thamil; Samsingh, R. Vimal; Sundarsingh, Esther Florence; Abirami, B Sakthi

doi:10.1109/tcpmt.2023.3257310

Cited by 4 publications

(2 citation statements)

References 15 publications

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“…11,25 Although radar-absorbing structures can be designed in different shapes and configurations, GFRP-based multilayered wideband absorbers with broadband characteristics are among the commonly used types of radarabsorbing structures. 26,27 These types of structures consist of many resistive sheets and a conducting backup plate separated by layers of dielectric spacers to match its electric requirements. 28 The dielectric spacers are made of GFRP composites alone or covered by frequency-selective coatings through which electromagnetic waves are transmitted or reflected depending on their dielectric properties, frequency response characteristics, geometrical configuration, effective input impedance, and so on.…”

Section: Introductionmentioning

confidence: 99%

“…Although radar‐absorbing structures can be designed in different shapes and configurations, GFRP‐based multilayered wideband absorbers with broadband characteristics are among the commonly used types of radar‐absorbing structures 26,27 . These types of structures consist of many resistive sheets and a conducting backup plate separated by layers of dielectric spacers to match its electric requirements 28 .…”

Section: Introductionmentioning

confidence: 99%

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Toward tailoring the mechanical and dielectric properties of short glass fiber‐reinforced epoxy composites

Nsengiyumva,

Zhong,

Chen

et al. 2023

Polymer Composites

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Glass fiber‐reinforced polymer‐matrix (GFRP) composites are used to manufacture devices such as radomes, electrical insulators, and radar‐absorbing structures, many of which are used in applications with strict mechanical and dielectric property requirements. As such, designs and properties of GFRP composite materials should be regularly improved to guarantee their safe operation and meet their constantly evolving application requirements. In this study, glass fiber (GF) particles and epoxy resin 128 (EP‐128) were used to manufacture high‐performance EP/GF‐X composites with GF particle contents ranging from 5% to 40%. An investigation into their mechanical and dielectric properties revealed that EP/GF‐20 composite specimens presented the best mechanical performance with their bending strength and modulus reaching 159.68 MPa and 6521.92 MPa, respectively, and an average dielectric constant of 4.862 within the 10–105 Hz frequency range. A theoretical analysis of the EP/GF‐X composite specimens' dielectric constants using classic dielectric models based on the Lichtenecker, Bruggeman, Jaysundere‐Smith, and Maxwell‐Garnett rule‐of‐mixture equations indicated that the dielectric model based on the Bruggeman rule‐of‐mixture equation provided the dielectric constants closest to the measured values with a maximum deviation of less than −0.321% for EP/GF‐40 composites. This study provides a feasible strategy to control the mechanical and dielectric properties of GFRP composites.Highlights Glass fiber (GF) particles and epoxy 128 (EP‐128) resin were used to manufacture high‐performance glass fiber‐reinforced epoxy (EP/GF‐X) composites. The composite manufacturing process was carefully controlled to ensure uniform distribution and orientation of GF particles in the EP‐128 resin. The mechanical and dielectric properties of the manufactured EP/GF‐X composites were effectively tailored by controlling the content and distribution of GF particles in the EP‐128 resin matrix. The dielectric constants of the EP/GF‐X composites were measured experimentally and predicted using various theoretical dielectric models. The Bruggeman model provided the dielectric constants of the EP/GF‐X composites closest to the measured values.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Toward tailoring the mechanical and dielectric properties of short glass fiber‐reinforced epoxy composites

Nsengiyumva,

Zhong,

Chen

et al. 2023

Polymer Composites

View full text Add to dashboard Cite

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Enhanced microwave absorption and mechanical performance of polyvinylidene fluoride thin films embedded with novel activated carbon and manganese ferrite

Amudhu,

Samsingh,

Florence

et al. 2024

Polymer Composites

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Thin composite films hold great promise for microwave devices for microwave absorption. This work mainly focuses on the investigation of the microwave absorption and mechanical studies of a composite thin film of activated carbon and manganese ferrite as conductive fillers within a polyvinylidene fluoride (PVDF) matrix. The production of activated carbon was successfully accomplished using a pyrolysis technique. Composite films consisting of polyvinylidene fluoride (PVDF) and activated carbon‐manganese ferrite were fabricated using a solution blending method. The composite films maintained a consistent concentration of activated carbon at 5 wt%. The characterization of the materials was conducted using scanning electron microscopy and X‐ray diffraction. The composite consists of 3 wt% of MnFe2O4 and 5 wt% Activated carbon/PVDF showed exceptional absorption properties and achieved a minimum reflection loss of around −38 dB at a frequency of 8–12 GHz at a thickness of 2 mm. Significantly, the composite film exhibited a greater tensile strength than the PVDF film. The results of our study highlighted the enhanced microwave absorption and economical manufacturing technique for producing composite films. These films exhibit promising microwave‐absorbing properties in stealth applications.Highlights A facile strategy to fabricate thin film PVDF composites was proposed. Novel activated carbon was synthesized to enhance the conductivity. Achieved reflection loss of around −38 dB at a frequency of 8–12 GHz. Synergistic effects of fillers enhanced dielectric and magnetic losses. Exhibited efficient mechanical performance and microwave absorption.

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Electromagnetic wave absorption and mechanical properties of 3D-printed PLA composite reinforced with graphene and iron (III) oxide for X-band absorbers

Amudhu,

Samsingh,

Florence

et al. 2024

J Mater Sci: Mater Electron

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Low-Profile Polymer Composite Radar Absorber Embedded With Frequency Selective Surface

Cited by 4 publications

References 15 publications

Toward tailoring the mechanical and dielectric properties of short glass fiber‐reinforced epoxy composites

Toward tailoring the mechanical and dielectric properties of short glass fiber‐reinforced epoxy composites

Enhanced microwave absorption and mechanical performance of polyvinylidene fluoride thin films embedded with novel activated carbon and manganese ferrite

Electromagnetic wave absorption and mechanical properties of 3D-printed PLA composite reinforced with graphene and iron (III) oxide for X-band absorbers

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