We investigated how the electrical contact of carbon foam with metallic surface can reduce its shielding properties. The bubble structure of the foam does not ensure a good electrical contact with the metal, and it leads to a significant reduction of the shielding effectiveness. A finite element numerical simulation was carried out by adopting a bubble/pore model of the internal microstructure of the foam, recovered by means of scanning electron microscope images. Experimental tests were carried out by inserting carbon foam samples into a coaxial transmission line. Numerical results agree well with experimental result showing significant performance reduction with respect to an ideal electrical contact.
Broadband electromagnetic characterization of carbon foam to metal contact / D., Micheli; R. B., Morles; M., Marchetti; Moglie, Franco; MARIANI PRIMIANI, Valter. - In: CARBON. - ISSN 0008-6223. - STAMPA. - 68:(2014), pp. 149-158. [10.1016/j.carbon.2013.10.074]
Broadband electromagnetic characterization of carbon foam to metal contact
MOGLIE, FRANCO;MARIANI PRIMIANI, Valter
2014-01-01
Abstract
We investigated how the electrical contact of carbon foam with metallic surface can reduce its shielding properties. The bubble structure of the foam does not ensure a good electrical contact with the metal, and it leads to a significant reduction of the shielding effectiveness. A finite element numerical simulation was carried out by adopting a bubble/pore model of the internal microstructure of the foam, recovered by means of scanning electron microscope images. Experimental tests were carried out by inserting carbon foam samples into a coaxial transmission line. Numerical results agree well with experimental result showing significant performance reduction with respect to an ideal electrical contact.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
