Experimental Investigation of Optimization of Machining Parameters in Abrasive Water Jet Machining

Abstract

Now a days, Non-Conventional Machining process is gaining more attention by the researchers. Abrasive Water jet machining (AWJM) is one of such machining process where material is removed with abrasive slurry as cutting tool. The present work discuss about the development of an optimal solution for minimizing surface roughness using a response surface methodology (RSM) while machining of EN grade steel. The machining parameters considered for the study are Abrasive Grain Size (AGS) and Hydraulic Pressure (HP) and Stand Off Distance (SOD) and the Abrasive Flow Rate (AFR). The response parameter is surface roughness (Ra). The experiments are performed based on the Box-Behnken design. Additionally, the significance of the developed optimization design has been identified using analysis of variance (ANOVA). Finally, the validity and adequacy of the developed model are done through confirmation tests. Key Words: Abrasive Water jet Machining, Response Surface Methodology, Optimization, ANOVA