Dimensions and cost prediction modelling of Nd:YVO₄laserudinternal micro-channel fabrication in PMMA

摘要

This paper presents the employment of Design ofudExperiments (DoE) as the prediction tool for the laserudmicro-machining process. Laser internal micro-channelsudmachined using pulsed Nd:YVO4 laser in PMMA wereudstudied. The experiments were carried out according to 33udfactorial Design of Experiment (DoE). In this paper theudinput process control parameters were laser power, P; pulseudrepetition frequency, PRF; and sample translation speed, U.udThe channel width and the micro-machining operating costudper metre of produced micro-channels were the measuredudresponses. The responses were adequately predicted withinudthe considered micro-machining parameters limits. For bothudresponses, quadratic polynomial regression equations wereudconstructed. The developed regression equations can beudutilised to find optimal micro-machining processudparameters within the studied process limits underudexperimental and operational conditions.