Statistical Analysis of Dry Sliding Wear Behavior of Graphite Reinforced Aluminum MMCs

AbstractThe present work investigates the dry sliding wear behavior of graphite reinforced aluminum composites produced by the molten metal mixing method by means of a pin on disc type wear set up. Dry sliding wear tests were carried out on graphite 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 control factors and the response selected was 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 empirical relations were deduced for WVL and COF in terms of control factors. Further, the optimal combination of the testing parameters was determined for WVL and COF by implementing Taguchi method for the experimental studies. Finally Analysis of Variance (ANOVA) was performed to know the impact of individual factors on the WVL and COF. The results indicated that the sliding distance for WVL, sliding distance and reinforcement percentage for COF was found to be most effective factor among the other control parameters on dry sliding wear