No abstract

Laser cutting is a popular process, which finds wide application in various manufacturing industries because of its precision of operation and low cost. Laser cutting, being a non-contact process, does not involve any mechanical cutting forces and tool wear. To maintain a high production rate and an acceptable level of quality for the cut parts, there is need to select the optimum combination of process parameters. This paper presents method of optimization for multi performance characteristics of LBC process for mild steel. Surface roughness (SR) and material removal rate (MRR) are multi performance characteristics and nozzle dia., gas pressure, cutting speed and cutting power are taken as input process parameters. Grey relational analysis (GRA) technique is used for optimization. ANOVA technique is also used to find significant and sub significant parameter. This experimental work will be helpful in deciding optimum parameters and to improve LBC process.