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Mechanical Performance of Tubular Microtruss Materials Reinforced With Nanocrystalline Sleeves

Published online by Cambridge University Press:  02 March 2011

Eral Bele ,
Mishaal Azhar  and
Glenn D. Hibbard
Eral Bele
Affiliation:
University of Toronto, Department of Materials Science and Engineering 184 College Street, Toronto, Ontario, Canada, M5S3E4
Mishaal Azhar
Affiliation:
University of Toronto, Department of Materials Science and Engineering 184 College Street, Toronto, Ontario, Canada, M5S3E4
Glenn D. Hibbard
Affiliation:
University of Toronto, Department of Materials Science and Engineering 184 College Street, Toronto, Ontario, Canada, M5S3E4
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Abstract

Microtruss cellular materials are assemblies of struts with characteristic features in the μm to mm scale, arranged in a periodic, three-dimensional architecture. Compared to conventional cellular architectures (e.g. stochastic foams and honeycombs), they can possess improved structural efficiency, because externally applied loads are resolved axially along the constituent struts. We have recently fabricated composite microtruss materials by electrodepositing reinforcing nanocrystalline sleeves on tubular polymeric scaffolds. These materials can offer enhanced structural performance by exploiting advantageous properties along three length scales: the inherent strength of the electrodeposited material (grain size reduction to the nm scale), its location away from the bending axis of the struts (cross-sectional efficiency in the μm scale), and the spatial arrangement of the struts (architectural efficiency in the mm scale). This study uses finite element analysis and experimental methods to characterize the mechanical properties of these composite materials.

Keywords

cellular (material form)structuralnanoscale
Type
Articles
Information
MRS Online Proceedings Library (OPL) , Volume 1304: Symposium Z – Hierarchical Materials and Composites—Combining Length Scales from Nano to Macro , 2011 , mrsf10-1304-z07-02
Copyright
Copyright © Materials Research Society 2011

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