Theoretical study of the effect of fibre orientations and porosity on heat conductivity of reinforced polymer composites

Alajmi, Abdalrahman R. E. S. (2016) Theoretical study of the effect of fibre orientations and porosity on heat conductivity of reinforced polymer composites. [USQ Project]

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Abstract

In recent years, there has been an increasing demand for engineering materials which not only possess good mechanical and thermal properties but are also cheap and environmentally friendly. Composites are unique engineering materials which can be tailor made from a large variety of materials to suit specific applications. Composites primarily consist of a polymer resin matrix in which other material is incorporated in discrete units for reinforcing. The reinforcing materials can be in the form of fibres or flakes orientated in various ways to impart maximum performance.

Natural fibres such as sisal, kenaf, bagasse, hemp etc. have been studied as reinforcing material for conventional polymer resins. Such composites are often termed green composites and they have unique mechanical properties when compared to conventional composites. They are also available at a cheap price and weigh a lot less. In addition, they can also offer unique thermal and acoustic insulation properties. Due to these attractive features they are used in the automotive, aerospace, textile and construction industries. A particularly important feature which determines the properties of natural fibre composites and their porosity.

From an industrial and academic point of view, there is a need to study the heat conductivity of newly developed composites. This is influenced by the porosity of the composite. This project, investigated the effect of porosity and their orientation on the heat conductivity of polymer composites. Experimental and theoretical studies were conducted on mainly sisal-glass fibre polymer composites. Different volume of fibre fractions were tested in this study. It was expected that the presence of the fibres would dramatically improve the heat conductivity properties of the materials because the sisal fibres have internal porosity. The results of this work are expect to contribute to academic and industrial knowledge about the thermal performance of fibre composites. The data will be published in a professional journal. This knowledge will contribute to the manufacturing of newly developed materials for industrial applications.


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Item Type: USQ Project
Item Status: Live Archive
Additional Information: Bachelor of Engineering (Honours) Major Mechanical Engineering project
Faculty / Department / School: Current - Faculty of Health, Engineering and Sciences - School of Mechanical and Electrical Engineering
Supervisors: Yousif, Belal
Date Deposited: 19 Jul 2017 00:37
Last Modified: 19 Jul 2017 22:49
Uncontrolled Keywords: composites; reinforced polymer; heat conductivity
Fields of Research : 09 Engineering > 0913 Mechanical Engineering > 091399 Mechanical Engineering not elsewhere classified
URI: http://eprints.usq.edu.au/id/eprint/31293

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