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The effect of artificial defects on the compressive properties of hollow sphere cellular aluminium (HSCA)

Yamada, Yasuo, Wen, Cui`e, Asahina, T. and Mabuchi, M. 2005, The effect of artificial defects on the compressive properties of hollow sphere cellular aluminium (HSCA), Materials forum (CD-ROM), vol. 29, pp. 525-529.

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Title The effect of artificial defects on the compressive properties of hollow sphere cellular aluminium (HSCA)
Author(s) Yamada, Yasuo
Wen, Cui`e
Asahina, T.
Mabuchi, M.
Journal name Materials forum (CD-ROM)
Volume number 29
Start page 525
End page 529
Publisher Institute of Materials Engineering Australasia Pty Ltd
Place of publication North Melbourne, Vic.
Publication date 2005
ISSN 1447-6738
Keyword(s) hollow sphere cellular aluminum
HSCA
bonding
crystal defects
deformation
thickness measurement
Summary Hollow sphere cellular aluminium (HSCA) samples were fabricated by bonding together two kinds of single aluminium hollow spheres with the same outside diameter of 4 mm but different wall thicknesses of 0.1 mm and 0.3 mm, in which the hollow spheres with the thinner sphere wall thickness were used as artificial defects. Four types of HSCA samples with the same relative density but various distributions of artificial defects were prepared by simple cubic packing. For comparing, HSCA sample without defective hollow spheres inside was also prepared. The effects of the distribution of the artificial defects on the deformation behaviours and mechanical properties were investigated by compressive tests. Results indicated that the nominal stress - nominal strain curve and the deformation behavior of the HSCA samples varied with the distribution of the artificial defects in spite of the same relative density. It is therefore suggested that the deformation behavior and mechanical property of cellular materials were also significantly affected by the distribution of defects. In particular, the plateau stress of the HSCA samples increased with the decrease in number of contact points between the normal hollow spheres and the defective hollow spheres in the loading direction during deformation.
Language eng
Field of Research 091499 Resources Engineering and Extractive Metallurgy not elsewhere classified
Socio Economic Objective 970109 Expanding Knowledge in Engineering
HERDC Research category C1 Refereed article in a scholarly journal
ERA Research output type C Journal article
Copyright notice ©2005, Institute of Materials Engineering Australasia Ltd
Persistent URL http://hdl.handle.net/10536/DRO/DU:30008785

Document type: Journal Article
Collection: Centre for Material and Fibre Innovation
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