Research on Attenuation Law of Expandable Graphite to Millimeter Wave in the Three-Dimensional Space

Hai Tao Bai; Xuan Yu Wang; Wen Jie Dong; Min Hui Pang

doi:10.4028/www.scientific.net/AMM.364.785

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vol. 364Research on Attenuation Law of Expandable Graphite...

Research on Attenuation Law of Expandable Graphite to Millimeter Wave in the Three-Dimensional Space

Abstract:

In this paper, researchers test the attenuation law of millimeter wave to expandable graphite of different concentrations with 3mm (8mm) artificial fog insertion loss test system, through laboratory tests and smoke device field tests. The results of tests proved that the attenuation performance of expandable graphite to 3mm wave is better than to 8mm wave, which could reach 18dBm and 16dBm respectively when the density is 60g/m³ and the optical path is 0.2m. Besides, the indoor attenuation performance of expandable graphite is better than outdoor performance, which means that meteorological conditions have great impact on the attenuation performance of expandable graphite in the field tests, and that the sedimentation of expandable graphite is quite speedy under wind-free circumstances. Therefore, it is suggested to extend the suspension time of expandable graphite as long as possible, so as to improve the anti-interference ability of expandable graphite smoke.

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Periodical:

Applied Mechanics and Materials (Volume 364)

Pages:

785-789

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.364.785

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Online since:

August 2013

Authors:

Hai Tao Bai, Xuan Yu Wang, Wen Jie Dong, Min Hui Pang

Keywords:

Attenuation, Expandable Graphite, Millimeter Wave, Smoke Agent

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