A layered composite material have been manufactured and characterized in terms of electromagnetic shielding effectiveness and of energy absorbing capability upon impact of metallic bullets fired at about 400 m/s. This impact velocity is in the range of potential mechanical shock in aeronautical field. The composite material under test has a thickness of about 2mm. It has been manufactured by integrating several layers of Kevlar fabric and carbon fiber ply within a polymeric matrix reinforced by carbon nanotubes. The electromagnetic shielding effectiveness has been measured by using a reverberation chamber. Measurements approach the metallic behavior with values of shielding up to 80 dB. Impact test on material has been performed by using a linear electromagnetic accelerator typically known as railgun. Results show that a thin and light tile of nanoreinforced composite material is able to absorb one shot with a local delamination of the layered structure. Overall goal was to develop a material which is simultaneously able to absorb mechanical shock waves and protect electronic equipment from electromagnetic interference.

Railgun test of nano-reinforced layered composite materials for ballistic impact and electromagentic shielding / Davide, Micheli; Antonio, Vricella; Roberto, Pastore; Marta, Albano; Mario, Marchetti; Gradoni, Gabriele; Moglie, Franco; MARIANI PRIMIANI, Valter. - STAMPA. - 2:(2014), pp. 1207-1215.

Railgun test of nano-reinforced layered composite materials for ballistic impact and electromagentic shielding

GRADONI, GABRIELE;MOGLIE, FRANCO;MARIANI PRIMIANI, Valter
2014-01-01

Abstract

A layered composite material have been manufactured and characterized in terms of electromagnetic shielding effectiveness and of energy absorbing capability upon impact of metallic bullets fired at about 400 m/s. This impact velocity is in the range of potential mechanical shock in aeronautical field. The composite material under test has a thickness of about 2mm. It has been manufactured by integrating several layers of Kevlar fabric and carbon fiber ply within a polymeric matrix reinforced by carbon nanotubes. The electromagnetic shielding effectiveness has been measured by using a reverberation chamber. Measurements approach the metallic behavior with values of shielding up to 80 dB. Impact test on material has been performed by using a linear electromagnetic accelerator typically known as railgun. Results show that a thin and light tile of nanoreinforced composite material is able to absorb one shot with a local delamination of the layered structure. Overall goal was to develop a material which is simultaneously able to absorb mechanical shock waves and protect electronic equipment from electromagnetic interference.
2014
9781632662651
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11566/181319
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