Experimentation and optimization of process parameters of abrasive jet drilling by surface response method with desirability based PSO

An indigenously AJM set up has been fabricated by suitably designing the mixing chamber and the pressurized power feed system. Experiments are conducted according to Box-Behnken Design of Response Surface Methodology (RSM) to measure the responses such as Material Removal Rate (MRR), Surface Roughness(Ra) and Flaring Diameter (FD) with the three input parameters i.e. Pressure (P), Nozzle Tip Distance (NTD) and Abrasive Grain Size (Gs) on borosilicate-glass work piece with zircon abrasives. Quadratic regression models, desirability function based PSO are defined for the responses and the observed optimal process parameter settings are achieved for the individual responses. Finally the results are experimentally validated and SEM micrograph analysis is performed.