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[1, 2011] 

Journal of Electrical Engineering, Vol 62, 1 (2011) 25-30

MICROWAVE ELECTROMAGNETIC FILED AND TEMPERATURE DISTRIBUTION IN MULTILAYER WOOD-CEMENT BOARD

Jaroslav Franek – Mojmír Kollár – Ivan Makovíny

   The aim of this work was theoretical considerations of a multi-layer structure and estimation of some properties of previously designed and prepared modified wood-cement boards. These were enriched by carbon powder as electric admixture to gain a high damping of electromagnetic radiation in microwave frequency region. The dissipated power and temperature assessment based on the heat and electromagnetic wave propagation in case of perpendicular incident radiation are presented. As a practical criteria of the shielding effectiveness - the drop of the temperature measured behind an irradiated multilayered shield was utilized.

Keywords: wood-cement boards, multi-layer structure, heat and electromagnetic wave propagation, damping efficiency


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