Optimisation of Nd:YAG laser micro-turning process using response surface methodology Online publication date: Wed, 22-Apr-2015
by G. Kibria; B. Doloi; B. Bhattacharyya
International Journal of Precision Technology (IJPTECH), Vol. 3, No. 1, 2012
Abstract: The present paper investigates the laser micro-turning operation on cylindrical aluminium oxide (Al2O3) ceramic to study the influence of different process parameters namely, laser average power, pulse frequency, workpiece rotational speed, assist air pressure and Y feed rate on surface roughness (Ra and Rt) and micro-turning depth deviation. The mathematical models for the responses have been developed based on response surface methodology (RSM). Through different surface plots, analyses have been made to study the influences of process parameters on responses. The adequacy of the developed models has been tested through analysis of variance (ANOVA). To investigate into the variation in the output for small variations in significant process parameters, sensitivity analyses (SA) have been done of the models developed for each response. Multi-objective optimisation has also been performed for searching out the optimal parametric condition for achieving minimum surface roughness and minimum depth deviation during laser micro-turning process.
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