MATERIALS TRANSACTIONS
Online ISSN : 1347-5320
Print ISSN : 1345-9678
ISSN-L : 1345-9678
Deformation and Density Change of Open-Cell Nickel Foam in Compression Test
Woo-Young KimRyo MatsumotoHiroshi Utsunomiya
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2017 Volume 58 Issue 10 Pages 1373-1378

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Abstract

Repeated compression test of open-cell type nickel foam (Celmet) was conducted to investigate deformation behavior with changes in density. Cylindrical billets with two pore sizes were compressed up to 90% in nominal strain. Apparent density, buoyant density and dimensions of billets were measured after each compression step. Compressive stress linearly increases without plateau region until the nominal strain of 0.4 with increase in apparent density and with slight increase in diameter. Apparent density and porosity estimated under assumption of no diameter change show good agreement with the experiments. Above the strain of 0.4, the stress as well as diameter apparently increases with remarkable increase in density.

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© 2017 The Japan Institute of Light Metals
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