Carbon nanotube reinforced concrete composites (RCC) were characterized in microwave bands currently employed in wireless telecommunication systems. Dielectric permittivity was retrieved by waveguide method and adopted to compute shielding effectiveness of RCC structures having different thickness/filler content. The shielding was also evaluated by reverberation chamber set up; theoretical calculations and measured values are in close agreement, thus testifying to the procedure reliability. Finally, a frequency selective absorber made of RCC layers was designed with the aid of a numerical optimization tool (particle swarm algorithm); the discussion of results is supported by a finite element method analysis of the layered structure.
Electromagnetic properties of carbon nanotube reinforced concrete composites for frequency selective shielding structures / Micheli, D.; Vricella, A.; Pastore, R.; Delfini, A.; Bueno Morles, R.; Marchetti, M.; Santoni, F.; Bastianelli, L.; Moglie, F.; Mariani Primiani, V.; Corinaldesi, V.; Mazzoli, A.; Donnini, J.. - In: CONSTRUCTION AND BUILDING MATERIALS. - ISSN 0950-0618. - STAMPA. - 131:(2017), pp. 267-277. [10.1016/j.conbuildmat.2016.11.078]
Electromagnetic properties of carbon nanotube reinforced concrete composites for frequency selective shielding structures
Micheli, D.;Vricella, A.;Pastore, R.;Delfini, A.;Bueno Morles, R.;Marchetti, M.;Santoni, F.;Bastianelli, L.;
2017
Abstract
Carbon nanotube reinforced concrete composites (RCC) were characterized in microwave bands currently employed in wireless telecommunication systems. Dielectric permittivity was retrieved by waveguide method and adopted to compute shielding effectiveness of RCC structures having different thickness/filler content. The shielding was also evaluated by reverberation chamber set up; theoretical calculations and measured values are in close agreement, thus testifying to the procedure reliability. Finally, a frequency selective absorber made of RCC layers was designed with the aid of a numerical optimization tool (particle swarm algorithm); the discussion of results is supported by a finite element method analysis of the layered structure.| File | Dimensione | Formato | |
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