Please use this identifier to cite or link to this item: https://www.um.edu.mt/library/oar/handle/123456789/18706
Title: Composites with needle-like inclusions exhibiting negative thermal expansion : a preliminary investigation
Authors: Grima, Joseph N.
Ellul, Brian
Attard, Daphne
Gatt, Ruben
Attard, Michael
Keywords: Expansion (Heat)
Finite element method
Materials -- Mechanical properties
Materials -- Thermal properties
Composite materials
Issue Date: 2010-12
Publisher: Elsevier
Citation: Grima, J. N., Ellul, B., Attard, D., Gatt, R., & Attard, M. (2010). Composites with needle-like inclusions exhibiting negative thermal expansion : a preliminary investigation. Composites Science and Technology, 70(16), 2248-2252.
Abstract: In this work a simple cylindrical structure with a stiff needle-like inclusion embedded within a much softer matrix is presented and analysed with the aim of obtaining a system with tunable thermal expansion properties. It is shown that by the correct combination of the thermal and mechanical properties of the matrix and inclusion, it is possible to design a system which can be tailor-made to exhibit particular values of the coefficient of thermal expansion (CTE) in the radial direction and also negative thermal expansion (NTE). In particular an analytical model to quantify the radial strain with changes in temperature is derived and verified through finite element analysis. The model is used to find correct property combinations which lead to particular values of thermal expansion which could also be negative or zero.
URI: https://www.um.edu.mt/library/oar//handle/123456789/18706
Appears in Collections:Scholarly Works - FacEngIME
Scholarly Works - FacEngME
Scholarly Works - FacSciChe
Scholarly Works - FacSciMet

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