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Application of grey-taguchi method for optimization of dry sliding wear properties of aluminum MMCs |
Rajesh SIRIYALA1( ), Gopala Krishna ALLURU2, Rama Murthy Raju PENMETSA1, Muthukannan DURAISELVAM3 |
1. Department of Mechanical Engineering, S.R.K.R. Engineering College, Bhimavaram 534204, India; 2. Department of Mechanical Engineering, University College of Engineering, JNTUK, Kakinada 533003, India; 3. Department of Production Engineering, National Institute of Technology, Tiruchirappalli 620015, India |
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Abstract Through a pin-on-disc type wear setup, the dry sliding wear behavior of SiC-reinforced aluminum composites produced using the molten metal mixing method was investigated in this paper. Dry sliding wear tests were carried on SiC-reinforced metal matrix composites (MMCs) and its matrix alloy sliding against a steel counter face. Different contact stresses, reinforcement percentages, sliding distances, and sliding velocities were selected as the control variables, and the responses were selected as the wear volume loss (WVL) and coefficient of friction (COF) to evaluate the dry sliding performance. An L25 orthogonal array was employed for the experimental design. Initially, the optimization of the dry sliding performance of the SiC-reinforced MMCs was performed using grey relational analysis (GRA). Based on the GRA, the optimum level parameters for overall grey relational grade in terms of WVL and COF were identified. Analysis of variance was performed to determine the effect of individual factors on the overall grey relational grade. The results indicated that the sliding velocity was the most effective factor among the control parameters on dry sliding wear, followed by the reinforcement percentage, sliding distance, and contact stress. Finally, the wear surface morphology and wear mechanism of the composites were investigated through scanning electron microscopy.
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Keywords
aluminum
ANOVA (analysis of variance)
grey relational analysis
metal matrix composites
SiC particulates
Taguchi
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Corresponding Author(s):
SIRIYALA Rajesh,Email:rajeshsiri.mech@gmail.com
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Issue Date: 05 September 2012
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