Micro-mechanical testing of metal foam cell walls using miniature three-point bending

0397225 - ÚTAM 2014 RIV CH eng C - Konferenční příspěvek (zahraniční konf.)
Fíla, Tomáš - Kytýř, Daniel - Koudelka_ml., Petr - Doktor, Tomáš - Zlámal, Petr - Jiroušek, Ondřej
Micro-mechanical testing of metal foam cell walls using miniature three-point bending.
Key Engineering Materials. Vol. 586. Durnten-Zurich: Trans Tech Publications, 2014 - (Pešek, L.; Zubko, P.), s. 120-125. ISBN 978-3-03785-876-9. ISSN 1013-9826.
[International Conference on Local Mechanical Properties /9./. Levoča (SK), 07.11.2012-09.11.2012]
Grant CEP: GA ČR(CZ) GAP105/12/0824
Institucionální podpora: RVO:68378297
Klíčová slova: micro-mechanical properties * three-point bending * metal foam * Alporas
Kód oboru RIV: JI - Kompozitní materiály
http://www.scientific.net/KEM.586.120

This paper is focused on determination of micro-mechanical material properties of aluminium metal foam at level of single cell wall. For the purpose of homogenization, complex and heterogenous inner structure of metal foams requires deep understanding of its deformation mechanisms and local mechanical properties. Therefore, a series of micro-scale bending tests of specimens prepared from foam's cells wall were performed. Initially, a technique of specimen preparation was developed. Dimensions and geometry of the specimens were inspected using scanning electron microscopy (SEM). Custom-designed three-point bending device suitable for testing at micro-scale was used for loading. Thin pure aluminium metal sheets were used for calibration of the described method. Six single cell wall specimens were tested. It can be concluded that the developed specimen preparation technique and loading method are suitable to determine local mechanical properties of thin walled metal foams.
Trvalý link: http://hdl.handle.net/11104/0225418