STUDY ON DESIGN METHOD OF WIDE-BAND WAVE-ABSORBING HONEYCOMB SANDWICH COMPOSITES

Abstract

Abstract: In this paper, a simulation calculation model of electrical properties of wave-absorbing honeycomb and honeycomb sandwich structural wave-absorbing composites with good computational accuracy was established. By the simulation calculation model, the effects of wave-absorbing honeycomb and microwave-transparent skin on electrical properties of honeycomb sandwich structural wave-absorbing composites were studied. The wide-band electrical properties of honeycomb sandwich structural wave-absorbing composites were optimized. The results show thatwave-absorbing properties of honeycomb sandwich structural wave-absorbing composites were first improved and then decreased with the increase of the dielectric properties of wave-absorbing honeycomb. While the dielectric properties of wave-absorbing honeycomb increased to the optimum balance of the electromagnetic matching and attenuation characteristics of the wave-absorbing honeycomb, the wave-absorbing properties were optimal. As the honeycomb height increased, the wave-absorbing properties at low frequency(1 GHz~2 GHz) were improved. And, the wave-absorbing properties at high frequency(8 GHz~18 GHz) improved firstly and then tended to be stable and no longer improved continuously. For the same microwave-transparent material, microwave-transparent skin with 1 mm thickness can meet both the requirements of wide-band electrical properties and bearing performance. With the reasonable design of gradient electrical structure, optimizing wide-band electrical properties of honeycomb sandwich structural wave-absorbing composites can be realized. The optimized honeycomb sandwich structural wave-absorbing composite has a high wide-band wave-absorbing property in the frequency range of 1 GHz~18 GHz.

Key words: simulation, wide-band, wave-absorbing property, wave-absorbing honeycomb, sandwich structure

CLC Number:

TB332

LI Song-ming, WU Si-bao, YUAN Wei, LU Hai-jun. STUDY ON DESIGN METHOD OF WIDE-BAND WAVE-ABSORBING HONEYCOMB SANDWICH COMPOSITES[J]. Fiber Reinforced Plastics/Composites, 2019, 0(7): 92-97.

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