期刊
COMPOSITE STRUCTURES
卷 256, 期 -, 页码 -出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.compstruct.2020.113148
关键词
Radar-absorbing structure; Honeycomb core; Electroless nickel plating; Electrical properties; Mechanical properties
资金
- National Research Foundation of Korea (NRF) - Ministry of Science and ICT [NRF-2017R1A5A1015311]
- Aerospace Low Observable Technology Laboratory Program of the Defense Acquisition Program Administration
- Agency for Defense Development of the Republic of Korea
In this study, a broadband microwave-absorbing honeycomb core structure was designed and fabricated using a nickel-coated glass fabric, which showed good absorption properties within a specific frequency range and underwent mechanical testing. Due to its desirable radar-absorption and mechanical characteristics, the structure has significant potential for use in stealth technology applications.
In this study, we designed and fabricated a broadband microwave-absorbing honeycomb core structure using a nickel-coated glass fabric, which can absorb the electromagnetic waves propagating along three orthogonal directions. The electromagnetic properties of the pristine glass fabric were modified via an electroless nickel plating. The elemental composition, phase identification, and magnetic characteristics of the nickel-coated glass fabric were examined via scanning electron microscopy, energy-dispersive X-ray spectroscopy, X-ray diffraction, and vibrating-sample magnetometry. Unlike the implement methods of conventional microwaveabsorbing honeycomb core structure such as dip coating, spray coating, and foam-filling, the proposed structure was produced without incorporating conductive particles or metal magnetic micropowders within the polymer matrix. The fabricated structure exhibited an absorption of -10 dB from 5.8 to 18 GHz and it was in good agreement with simulation result. In addition, we performed tensile, compressive, and interlaminar shear tests to evaluate the mechanical performance of the structure. Given the desirable radar-absorption and mechanical characteristics of the structure, it has significant potential for use in stealth technology applications.
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