Fabrication and Design of Multi-Layered Radar Absorbing Structures of MWNT-Filled Glass/Epoxy Plain-Weave Composites

The object of this study is to design radar absorbing structures(RAS) with load-bearing ability in X-band. Glass/Epoxy plain-weave composites of excellent specific stiffness and strength, containing multi-walled carbon nanotubes(MWNT) added to induce dielectric loss were fabricated. The observation of microstructure and the permittivity of the composites confirmed that the materials are suitable to be used for radar absorbing material. Genetic algorithm and theory for reflection/transmission of electromagnetic waves in a multi-layered RAS were applied to conduct an optimal design of a RAS composed of the developed composites. We observed that the thickness per ply changes with the number of ply and MWNT contents. The fabrication process was proposed considering the problem and applied to fabricate a designed RAS and the theoretical and measured reflection loss of the RAS were also found in good agreement.ጊ礀Ѐ㌸㐻Ԁ䭃䑎䷙੿6〰㬅K䍄乍쐗ጊ봀Ѐ〰㔻Ԁ䭃䑎䶯᜕ఄ7㤴⸸㬅K䍄乍