Multi Response Optimization of Process Parameters in Cryogenic Co2 Grinding Using TOPSIS Method

Abstract

This paper presents observation on the optimization of grinding of titanium (Ti–6Al–4V) alloy under cryogenic coolants CO₂ using the TOPSIS method. The input process parameters considered were table speed, nozzle inclination angle and depth of cut. The output    response parameters considered included tangential force (Ft), temperature (T) and surface roughness (Ra). In this experimental study, Taguchi method was used for designing the experiments under three different levels of combination of process parameters. The      experimental result indicates that CO₂ grinding performance with the experimental number 5 having improvements in best multiresponse characteristics the results were achieved through the TOPSIS method. The analysis of variance test was carried out to determine the   significant factors for the CO₂ grinding process. Chip morphology and surface modification of the machined component were examined using a scanning electron microscope (SEM).