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P. Gurusamy ¹, Leo C. Bestall ¹, J. Arun Pandian ¹

Affiliations
1 Dept. of Mech. Engg., Jaya Engineering College, Chennai, IN

Abstract

The natural fibre-reinforced polymer matrix composites can be used both in industrial applications and in research field. These polymer matrix composites are low cost, renewable and completely or partially recyclable. In this study, hand layup method has been used with the combinations of coir, sisal fibre and sugarcane skin to fabricate composite specimens for tension, compression and flexural strength tests. From the test results, the sisal fibre composites have shown the promising tensile and compressive strengths. Further, it is also shown that the sugarcane fibre has good flexural strength compared to sisal and coir fibre reinforced polymer composite specimens.

Keywords

Natural Fibres, Epoxy Resin, Polymer Matrix Composites, Flexural Strength, Sugarcane Fibre.

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P. Gurusamy ¹, J. Arun Pandian ², Leo C. Bestall ²

Affiliations
1 Dept. of Mech. Engg., Jaya Engineering College, Chennai
2 Dept. of Mech. Engg., Jaya Engineering College, Chennai, IN

Abstract

This paper details the friction stir processing (FSP) and mechanical behaviour of hybrid composite materials. Boron carbide (B₄C), silicon carbide (SiC), aluminium oxide (Al₂O₃) particulates are reinforced with aluminium alloy (LM25) to fabricate hybrid composite specimens via FSP. The effect of FSP parameters such as tool rotational speed, traversing speed, groove width and micro hardness was investigated. Scanning electron microscopy analysis has shown that B₄C, SiC and Al₂O₃ particulates are dispersed well into the Aluminium alloy matrix. Mechanical test results have shown that the tensile strength and Vickers hardness of FSP aluminium alloy with B₄C and Al₂O₃ particulates are better than FSP aluminium alloy with SiC and Al₂O₃ particulates.

Keywords

Friction Stir Processing, Boron Carbide, Silicon Carbide, Metal Matrix Composites, Mechanical Testing, Hardness.

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P. Gurusamy ¹, C. Anbarasan ¹, P. Mohana Krishnan ¹

Affiliations
1 Department of Mechanical Engineering, Jaya Engineering College, Chennai, IN

Abstract

Objectives: The main objective of this study was to analyze the tribological behavior of aluminum alloy reinforced with SiC/B4C nano particles. Methods: The composites were fabricated by mechanical and ultrasonic stirring and the reinforced aluminum composites were casted into cylindrical pins. The wear properties of the samples were then examined by using a pin-on-disc type wear testing machine under dry sliding condition and the results were tabulated. The micrograph study was also conducted to examine the agglomerates and porosity on the surface of the composites. Findings: The results proved that the aluminum composites with nano reinforcements have better wear resistance and lower coefficient of friction as compared with non-reinforced aluminum. The micrograph study revealed that the agglomerates and porosity on the surface of the composites were reduced by the use of ultrasonic stirring and cavitation processes. Application: The composites fabricated could be used in wear resistance applications and in elevated temperature applications.

Keywords

Aluminium, Composites, Nanoparticles, Reinforcement, Tribological Behaviour, Wear.

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