Engineering Transactions, 64, 4, pp. 629–634, 2016

Compression of Open-Cell Aluminium

Piotr KASZA
AGH University of Science and Technology,
Poland

Barbara LIPOWSKA
Institute of Ceramics and Building Materials
Poland

Ryszard Bolesław PĘCHERSKI
AGH University of Science and Technology
Poland

Anna Małgorzata STRĘK
Cracow University of Technology
Poland

Krzysztof WAŃCZYK
Foundry Research Institute, Center for Design and Prototyping
Poland

The paper presents compression test results of self-made open-cell aluminium which was produced by the investment casting method. Two groups of samples were studied: prototype samples containing some structural imperfections (apparent density 0.485 g/cm3) and regular samples without visible mistakes (app. density 0.312 g/cm3). Performed experimental research covered quasi-static compression tests with one hysteresis loop. Based on experimental results, new measures to help material characterisation were proposed: instant and average loop secant gradients ($E_{inst.sec}^{**}$ and $E_{av.inst.sec}^{**}$) and average linear loop gradient ($E_{av.lin}^{**}$).
Keywords: open-cell aluminium; aluminium sponge; compression test; loop gradient
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