M. Hariprasad

Senior Lecturer, Mechanical Engineering, GMR Polytecnic, Madanapalle, Department of Technical Education,

C. Ramakoteswrarao

Research Scholar, Department of Mechanical Engineering, S.V. University College of Engineering Tirupati - 517502

P. Venkataramaiah

Professor, Department of Mechanical Engineering, S.V. University College of Engineering, Tirupati - 517502

Abstract

Aluminium Metal matrix composite (AMMC) materials has been used worldwide especially in production industries like aerospace, automotive and marine. Drilling process is one of the important operations and obtained good quality of hoe is the major task, it can be achieved by optimization of input parameters effectively. In this paper Aluminium metal matrix composite reinforced by Al2O3 and B4C is prepared by Stir casting technique. Further, drilling experiments are conducted on it by using CNC machine according to Taguchi OA18 experimental design by taking input parameters of drill bit, speed, feed and coolant at different levels. Minimum quantity lubrication cooling system (MQL) also applied to reduce the coolant required, enhance the cooling effect etc. Then the experimental responses of power consumed, temperature of drill bit, tool vibration, surface roughness, burr height, tool wear is recorded and these are analyzed by using WASPAS (Weighted Aggregated Sum Product Assessment) method and optimum parameter levels are identified for minimization of these machining responses.

Keywords- AMMCs, Taguchi OA18, MQL, Tool wear, Amplitude, WASPAS, AA8011/Al2O3/B4C