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Materials (Basel). 2015 Jul 7;8(7):4061-4079. doi: 10.3390/ma8074061.

Endurance of Damping Properties of Foam-Filled Tubes.

Author information

1
Politecnico di Milano, Dipartimento di Meccanica, via La Masa 1, Milan 20156, Italy. matteo.strano@polimi.it.
2
Politecnico di Milano, Dipartimento di Meccanica, via La Masa 1, Milan 20156, Italy. alessandro.marra@mail.polimi.it.
3
MUSP Lab, via Tirotti 9, Piacenza 29122, Italy. valerio.mussi@musp.it.
4
MUSP Lab, via Tirotti 9, Piacenza 29122, Italy. massimo.goletti@musp.it.
5
Technologie Supérieure, Département de génie mécanique, Montréal H3C 1K3, Canada. Philippe.Bocher@etsmtl.ca.

Abstract

The favorable energy-absorption properties of metal foams have been frequently proposed for damping or anti-crash applications. The aim of this paper is to investigate the endurance of these properties for composite structures, made by a metal or a hybrid metal-polymeric foam used as the core filling of a tubular metal case. The results of experimental tests are shown, run with two types of structures: 1) square steel tubes filled with aluminum or with hybrid aluminum-polymer foams; 2) round titanium tubes filled with aluminum foams. The paper shows that the damping properties of a foam-filled tube change (improve) with the number of cycles, while all other dynamic properties are nearly constant. This result is very important for several potential applications where damping is crucial, e.g., for machine tools.

KEYWORDS:

advanced pore morphology; cellular metals; cyclic bending; interaction effect; metal foam; vibrations

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