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Title: | Composites with needle-like inclusions exhibiting negative thermal expansion : a preliminary investigation |
Authors: | Grima, Joseph N. Ellul Grech, 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 |
Files in This Item:
File | Description | Size | Format | |
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OA - Composites with needle-like inclusions exhibiting negative thermal expansion A preliminary investigation.1.pdf | Composites with needle-like inclusions exhibiting negative thermal expansion : a preliminary investigation | 552.76 kB | Adobe PDF | View/Open |
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