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Materials 2018, 11(2), 294; https://doi.org/10.3390/ma11020294

Thermoauxetic Behavior of Composite Structures

Institute of Applied Mechanics, Poznan University of Technology, ul. Jana Pawła II 24, 60-965 Poznan, Poland
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Received: 24 January 2018 / Revised: 9 February 2018 / Accepted: 11 February 2018 / Published: 13 February 2018
(This article belongs to the Special Issue Modeling and Simulation of Advanced Composite Materials)
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Abstract

This paper presents a study of new two-dimensional composite structures with respect to their thermomechanical properties. The investigated structures are based on very well-known auxetic geometries—i.e., the anti-tetrachiral and re-entrant honeycomb—modified by additional linking elements, material which is highly sensitive to changes of temperature. The study shows that temperature can be used as a control parameter to tune the value of the effective Poisson’s ratio, which allows, in turn, changing its value from positive to negative, according to the temperature applied. The study shows that such thermoauxetic behavior applies both to composites with voids and those completely filled with material. View Full-Text
Keywords: auxetic; thermoauxetic; thermal auxeticity; anti-tetrachiral; re-entrant honeycomb; tunable material properties auxetic; thermoauxetic; thermal auxeticity; anti-tetrachiral; re-entrant honeycomb; tunable material properties
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
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Jopek, H.; Stręk, T. Thermoauxetic Behavior of Composite Structures. Materials 2018, 11, 294.

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