Mechanical Behavior of Innovative Reinforced Aluminum Foam Panels

Abstract:

Metals foams are attracting great interest in aerospace, automotive and military fields. Particularly, the closed-cells aluminum foams are characterized by peculiar properties, such as low specific weight coupled with high energy absorption capacity, high specific stiffness and strength and reduced thermal and electrical conductivity. For the above reasons, aluminum foams can be effectively used as core of sandwich structures, replacing the traditional honeycomb and polymer-based foams. However, under specific loading conditions, the foam core was proved to collapse because of the bubble-cell structure, so affecting the mechanical performance of the sandwich constructions. Different solutions have been studying in literature to reinforce the foam-based core; for example, the authors in previous studies investigated the possibility to use a metal grid inside the core as a corrugated skeleton, to improve its behavior under compression. Therefore, based on these premises, the aim of this work is to improve understanding of the mechanical behavior of innovative reinforced aluminum foam panels through an experimental approach consisting of three-point bending tests. In particular sandwich structures with and without a corrugated grid structure, acting as skeleton inside the core, were manufactured. The bending properties were estimated also considering two different types of steel grid employed for the corrugated structure and for reinforcing the skins.

• Periodical: Key Engineering Materials (Volume 926)
• Pages: 1713-1718
• DOI: https://doi.org/10.4028/p-980e55
• Online since: July 2022
• Authors: Massimo Durante*, Luca Boccarusso, Luigi Carrino, Antonio Formisano, Antonio Viscusi
• Keywords: Aluminum Foams, Mechanical Behavior, Reinforced Structures, Sandwich Panels

References

[1] J. Baumeister, J. Banhart, M. Weber, Aluminium foams for transport industry, Mater. Des. 18 (1997) 217-220.

DOI: 10.1016/s0261-3069(97)00050-2

[2] J. Banhart, Manufacture, characterisation and application of cellular metals and metal foams, Prog. Mater. Sci. 46 (2001) 559-632.

DOI: 10.1016/s0079-6425(00)00002-5

[3] J. Banhart, Aluminium foams for lighter vehicles, Int. J. Veh. Des. 37 (2005) 114-125.

[4] W.-Y. Jang, W.-Y. Hsieh, C.-C. Miao, Y.-C. Yen, Microstructure and mechanical properties of ALPORAS closed-cell aluminium foam, Mater. Charact. 107 (2015) 228-238.

DOI: 10.1016/j.matchar.2015.07.012

[5] J. Banhart, Manufacturing routes for metallic foams, JOM 52 (2000) 22-27.

DOI: 10.1007/s11837-000-0062-8

[6] V. Crupi, G. Epasto, E. Guglielmino, Comparison of aluminium sandwiches for lightweight ship structures: Honeycomb vs foam, Mar. Struct. 30 (2013) 74-96.

DOI: 10.1016/j.marstruc.2012.11.002

[7] K. Stöbener, G. Rausch, Aluminium foam-polymer composites: Processing and characteristics, J. Mater. Sci. 44 (2009) 1506-1511.

DOI: 10.1007/s10853-008-2786-8

[8] M. Latour, M. D'Aniello, R. Landolfo, G. Rizzano, Experimental and numerical study of double-skin aluminium foam sandwich panels in bending, Thin-Walled Struct. 164 (2021) 107894.

DOI: 10.1016/j.tws.2021.107894

[9] E. Tang, X. Zhang, Y. Han, Experimental research on damage characteristics of CFRP/aluminum foam sandwich structure subjected to high velocity impact, J. Mater. Res. Technol. 8 (2019) 4620-4630.

DOI: 10.1016/j.jmrt.2019.08.006

[10] A. Formisano, A. Viscusi, M. Durante, L. Carrino, D. De Fazio, A. Langella, Experimental Investigations on Bending Collapse Modes of Innovative Sandwich Panels with Metallic Foam Core, Procedia Manuf. 47 (2020) 749-755.

DOI: 10.1016/j.promfg.2020.04.228

[11] A. Viscusi, L. Carrino, M. Durante, A. Formisano, On the bending behaviour and the failure mechanisms of grid-reinforced aluminium foam cylinders by using an experimental/numerical approach, Int. J. Adv. Manuf. Technol. 106 (2020) 1683-1693.

DOI: 10.1007/s00170-019-04414-6

[12] A. Formisano, M. Durante, A. Viscusi, L. Carrino, Mechanical behavior and collapse mechanisms of innovative aluminum foam-based sandwich panels under three-point bending, Int. J. Adv. Manuf. Technol. 112 (2021) 1631-1639.

DOI: 10.1007/s00170-020-06564-4

[13] I. Duarte, L. Krstulović-Opara, M. Vesenjak, Analysis of performance of in-situ carbon steel bar reinforced Al-alloy foams, Compos. Struct. 152 (2016) 432-443.

DOI: 10.1016/j.compstruct.2016.05.061

[14] M. Durante, L. Boccarusso, A. Formisano, D. De Fazio, A. Viscusi, L. Carrino, Corrugated Structure Reinforcing Aluminum Foam, ESAFORM 2021 (2021) art. no. 46.

DOI: 10.25518/esaform21.4036

[15] M. Durante, A. Formisano, A. Viscusi, L. Carrino, An innovative manufacturing method of aluminum foam sandwiches using a mesh-grid reinforcement as mold, Int. J. Adv. Manuf. Technol. 107 (2020) 3039-3048.

DOI: 10.1007/s00170-020-05244-7