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Advances in Materials Science and Engineering
Volume 2014, Article ID 970468, 11 pages
Research Article

Effect of Filler Content on the Performance of Epoxy/PTW Composites

Department of Mechanical Engineering, St. Joseph Engineering College, Mangalore, Karnataka 575 028, India

Received 30 May 2013; Revised 6 February 2014; Accepted 14 March 2014; Published 27 April 2014

Academic Editor: Steve Bull

Copyright © 2014 Mudradi Sudheer et al. 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.


This paper presents the mechanical and tribological characteristics of potassium titanate whisker (PTW) reinforced epoxy composites. The effect of various test variables and material parameters on the friction and wear behavior of epoxy/PTW composites has been studied systematically. Tribological tests were conducted on a pin-on-disc apparatus under dry sliding conditions. Addition of PTW was found to improve the wear resistance of the composites and 15 wt% PTW filled epoxy exhibited lowest specific wear rate and highest friction coefficient compared to other test samples. PTW additions showed beneficiary effect on density, hardness, and stiffness properties of composites; however, strength properties and ductility were found to decrease with the increasing content of PTW. Scanning electron microscope (SEM) images of tensile fractured surfaces and worn-out surfaces of selected samples revealed different fracture mechanisms.