Fabrication and design of multi-layered radar absorbing structures of MWNT-filled glass/epoxy plain-weave composites

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The object of this study is to design radar absorbing structures (RAS) with load-bearing ability in the X-band. Glass/epoxy plain-weave composites of excellent specific stiffness and strength, containing multi-walled carbon nanotubes (MWNT) to induce dielectric loss, were fabricated. Observations of the microstructure and the permittivity of the composites confirmed that the fabrics are suitable for use as RASs. A genetic algorithm and a theory of the reflection/transmission of electromagnetic waves in a multi-layered RAS were applied to design an optimal RAS composed of MWNT-filled composites. The thickness per ply was observed to vary, depending on the number of plies and the MWNT contents. A fabrication process was proposed that considered the variation. The proposed process was in the fabrication of a designed RAS, and the theoretical and measured reflection losses of the RAS were found to be in good agreement.
Publisher
ELSEVIER SCI LTD
Issue Date
2006-12
Language
English
Article Type
Article
Citation

COMPOSITE STRUCTURES, v.76, no.4, pp.397 - 405

ISSN
0263-8223
DOI
10.1016/j.compstruct.2005.11.036
URI
http://hdl.handle.net/10203/10178
Appears in Collection
AE-Journal Papers(저널논문)
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