Uniaxial Compression Tests of Metallic Foams: A Recipe

Abstract:

In case of metallic foams the stress-strain curve observed during uniaxial compression is often not smooth, expecting plateau is often missing, and the curve instead of slowly increasing stress before final densification takes place often exhibit a lot of peaks with even local stress drops. It is generally accepted that the origin of this behavior is linked to the heterogeneity and/or anisotropy of foams, ductility or brittleness of used matrix alloy and the presence of surface skin. This contribution is designed as a recipe for metal foam investigator how to handle the uniaxial compression test results on metallic foams. Aim of this contribution is to introduce engineers and researchers also to the unusual events that can occur during foam compression test.

• Periodical: Key Engineering Materials (Volume 601)
• Pages: 237-241
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.601.237
• Online since: March 2014
• Authors: Jaroslav Kováčik, Liviu Marsavina, A. Adamčíková, F. Simančík, R. Florek, M. Nosko, P. Tobolka, P. Minár, N. Mináriková, J. Jerz, E. Linul
• Keywords: Aluminum Foam, Compression, Foams, Metallic Foams, Zinc Foams

References

[1] L.J. Gibson, M.F. Ashby, Cellular solids, Cambridge, UK, Cambridge University Press, (1997).

[2] J. Banhart, Prog. Mater. Sci. 46 (2001) 559–632.

[3] J. Kováčik, F. Simančík, Kovove Mater. 42 (2004) 79 – 90.

[4] R. Florek, F. Simančík, M. Nosko, J. Harnúšková, Powder Metallurgy Progress 10 (2010) 207.

[5] ISO/DIS 13314(E): 2011, Mechanical testing of metals - Ductility testing - Compression test for porous and cellular metals, (2011).

DOI: 10.3403/30203544u