Mechanical and electromagnetic behavior of fabricated hybrid composite sandwich radome with a new optimized frequency-selective surface

Rafieipour, Hossein; Setoodeh, A.R.; Lau, Alan Kin Tak

doi:10.1016/j.compstruct.2021.114256

Cited by 28 publications

(9 citation statements)

References 51 publications

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“…A plastically deformed area caused by drop-weight impact can serve as an indicator of resistance against impact loads . To evaluate this resistance, the size of the impacted area was analyzed and was found to be well-correlated to physical and SEM analysis.…”

Section: Resultsmentioning

confidence: 99%

“…A plastically deformed area caused by drop-weight impact can serve as an indicator of resistance against impact loads. 23 To evaluate this resistance, the size of the impacted area was analyzed and was found to be well-correlated to physical and SEM analysis. TT, HTS, and TS tested samples presented with higher impact damaged areas when compared to unconditioned samples as shown in Figure 13.…”

Section: T H Imentioning

confidence: 99%

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Characterization of Environmentally Conditioned Quartz–Cyanate Ester Composites for Radome Applications

Chivukula

Reddy

Adusumalli

et al. 2022

Ind. Eng. Chem. Res.

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Because quartz–cyanate ester (QCE) composites are employed to fabricate missile and aircraft radomes, retaining their structural and electromagnetic (EM) integrity after prolonged exposure to environmental stresses is essential for long-term deployment as radar protectors. Therefore, in this study, QCE composite samples were subjected to environmental conditioning tests, namely, transient temperature (transition from −67 to 145 °C), high-temperature storage (cycling between 35 and 85 °C), thermal shock (cycling between −55 and 100 °C), fluid contamination (immersion in mineral and turbine oils), and humidity cycles (conditioning at 30 °C and 85% RH), to observe the effect of conditioning on the physical, morphological, thermal, mechanical, and dielectric properties of composites. Interfacial damage was observed in all the conditioned samples. Samples after fluid immersion test were found to have the highest deviation in properties compared to unconditioned ones. Fluid diffusion led to higher surface crack width, lower impact damaged area, and higher EM energy dissipation (higher dielectric loss tangent). High-temperature storage tested samples had the highest surface crack intensity, while humidity cycles caused matrix plasticization, resulting in lower density and thermal conductivity values. A high degree of postcuring in thermally shocked samples resulted in brittleness of cyanate ester, leading to an increase in density and impact damaged area. Although a slight degree of damage is reported, the change in QCE composite properties postconditioning is not significant enough to prevent its application as uncoated radome materials, except for rain erosion at 150 m/s.

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Section: Resultsmentioning

confidence: 99%

Section: T H Imentioning

confidence: 99%

Characterization of Environmentally Conditioned Quartz–Cyanate Ester Composites for Radome Applications

Chivukula

Reddy

Adusumalli

et al. 2022

Ind. Eng. Chem. Res.

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“…Mechanical and electromagnetic behavior of fabricated hybrid composite sandwich radome with a new optimized frequency selective surface proposed in [23]. The various approaches used to have buried FSS structure is monolithic, sandwich, or multilayer radome wall structure to improve the overall EM performance.…”

Section: Literature Surveymentioning

confidence: 99%

Design of FSS Based Radome Wall for Airborne Radar Application

Pandhare

Lohar

Dhote

et al. 2021

J. Microw. Optoelectron. Electromagn. Appl.

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Section: Introductionmentioning

confidence: 99%

“…Subsequently, sandwich structural composites with honeycomb or foam cores were introduced into the field of wave transmission owing to their excellent electromagnetic property, high strength, and low density. [10,11] But, a fatal shortcoming of sandwich structures is that their glue-bonded structures are sensitive to thermal environment and shear force, which often lead to delamination between the skin and core layer. [12] As a quick-witted strategy for overcoming delamination, 3D woven spacer integrated composites have shown broad application prospects in the fields of aviation/aerospace, transportation, and wireless communication services on account of their remarkable properties such as high strength, strong designability, low dielectric constant and dielectric loss tangent value.…”

mentioning

confidence: 99%

Ultra‐lightweight 3D woven spacer integrated composites with stabilization of dielectric and robust mechanical properties at room and elevated temperatures

Zheng

Zhang

et al. 2022

Polymer Composites

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Polymer matrix composites with lightweight, low dielectric constant (ε) and dielectric loss tangent (tan δ), high‐temperature resistance, and excellent mechanical properties are urgently needed in the fields of aviation, aerospace, transportation, and wireless communication services. In this work, 3D woven spacer Kevlar/polyimide composites (3DKPC) with excellent dielectric properties and robust mechanical properties were designed and obtained by combining 3D weaving technology and thermal imidization process. Results show that the volume density of the prepared composites is as low as 0.24 g·cm−3, but its compressive strength can be up to 6.24 MPa. The dielectric constant and loss tangent of 3DKPC at room temperature are extremely low, with the value of ~1.32 and 6.9 × 10−3, respectively. Moreover, the compressive strength retention rate is more than 96% and the dielectric constant can be consistently lower than 1.36 when the temperature increases from 25 to 300°C, demonstrating the outstanding mechanical and dielectric stability of 3DKPC. In addition, as an application example of resulting composites, a microstrip antenna with 3DKPC as the substrate material was designed, followed by the simulation of its electromagnetic properties via High Frequency Structural Simulator. The results display that the gain of the microstrip antenna is 6.2 dB, which is superior to those of many other reported microstrip antennas, indicating that the 3DKPC proposed here has great application potential in aerospace, wireless communication, and other fields.

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Mechanical and electromagnetic behavior of fabricated hybrid composite sandwich radome with a new optimized frequency-selective surface

Cited by 28 publications

References 51 publications

Characterization of Environmentally Conditioned Quartz–Cyanate Ester Composites for Radome Applications

Characterization of Environmentally Conditioned Quartz–Cyanate Ester Composites for Radome Applications

Design of FSS Based Radome Wall for Airborne Radar Application

Ultra‐lightweight 3D woven spacer integrated composites with stabilization of dielectric and robust mechanical properties at room and elevated temperatures

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