Table of Contents
International Journal of Manufacturing Engineering
Volume 2015, Article ID 627218, 11 pages
http://dx.doi.org/10.1155/2015/627218
Research Article

An Investigation of Abrasive Water Jet Machining on Graphite/Glass/Epoxy Composite

1Department of Mechanical and Manufacturing Engineering, Manipal Institute of Technology, Manipal University, Manipal 576104, India
2School of Engineering & IT, Department of Mechanical Engineering, Manipal University Dubai Campus, Dubai International Academic City, P.O. Box 345050, Dubai, UAE

Received 31 July 2014; Revised 9 November 2014; Accepted 12 December 2014

Academic Editor: SeinLeung Soo

Copyright © 2015 Deepak Doreswamy 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.

Abstract

In the present research work, the effect of abrasive water jet (AWJ) machining parameters such as jet operating pressure, feed rate, standoff distance (SOD), and concentration of abrasive on kerf width produced on graphite filled glass fiber reinforced epoxy composite is investigated. Experiments were conducted based on Taguchi’s L27 orthogonal arrays and the process parameters were optimized to obtain small kerf. The main as well as interaction effects of the process parameters were analyzed using the analysis of variance (ANOVA) and regression models were developed to predict kerf width. The results show that the operating pressure, the SOD, and the feed rate are found to be significantly affecting the top kerf width and their contribution to kerf width is 24.72%, 12.38%, and 52.16%, respectively. Further, morphological study is made using scanning electron microscope (SEM) on the samples that were machined at optimized process parameters. It was observed that AWJ machined surfaces were free from delamination at optimized process parameters.