Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/24530
Title: A composite material with Poisson's ratio tunable from positive to negative values : an experimental and numerical study
Authors: Hu, H 
Silberschmidt, V
Issue Date: 2013
Publisher: Springer
Source: Journal of materials science, 2013, v. 48, no. 24, p. 8493-8500 How to cite?
Journal: Journal of materials science 
Abstract: The Poisson's ratio describes an extent of transverse deformation of a material when an axial strain is applied. A change of the Poisson's ratio from positive to negative can equip a material with a set of specific properties. In this paper, a study of a composite material with a tunable Poisson's ratio is presented. Samples of such a composite were first fabricated with two different polymers based on a composite structure proposed in our previous work using a multi-material additive-manufacturing system. Using both experimental and numerical methods, deformation mechanisms and mechanical properties of this composite material were analyzed. The obtained results demonstrate that its Poisson's ratio can be reduced by increasing the difference in stiffness of constituent materials and turned from positive to negative when this difference is sufficiently high. Additionally, the study also validates a possible method to fabricate composites with designed structures and multi-constituent materials using additive-manufacturing techniques.
URI: http://hdl.handle.net/10397/24530
ISSN: 0022-2461
EISSN: 1573-4803
DOI: 10.1007/s10853-013-7666-1
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