Deformation and Density Change of Open-Cell Nickel Foam in Compression Test

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  • Kim Woo-Young
    Division of Materials and Manufacturing Science, Graduate School of Engineering, Osaka University
  • Matsumoto Ryo
    Division of Materials and Manufacturing Science, Graduate School of Engineering, Osaka University
  • Utsunomiya Hiroshi
    Division of Materials and Manufacturing Science, Graduate School of Engineering, Osaka University

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<p>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.</p>

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  • MATERIALS TRANSACTIONS

    MATERIALS TRANSACTIONS 58 (10), 1373-1378, 2017

    公益社団法人 日本金属学会

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