Abstract
Abstract This paper presents an experimental study of laser microgrooving on the surface of Hydroxyapetite in its pure form with low power nanosecond pulsed Nd:YAG laser. The laser grooving parameters, namely Lamp current, pulse frequency, assist air pressure, and cutting speed are optimized with respect to overcut and groove depth which are chosen as machining responses. Taguchi methodology for four factors at three levels is used here for the implementation of experiments. Grey relational analysis (GRA) is applied to convert the multiple quality characteristics to a single performance characteristic called grey relational grade from where optimal process parameters are determined. Analysis of variance is carried out to identify the most significant factor for the overall quality characteristics of the laser grooving process. Results of confirmation experiments indicate at the application feasibility of the Taguchi based grey technique for laser grooving quality of bioceramics in the medical industry
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