Abstract
This paper aims at selecting the optimal parameters for micro-hole drilling of graphene oxide/Pineapple leaf filler reinforced epoxy hybrid composite using ultrasonic machining (USM). The selection of optimal parameters has been done using evaluation based on distance from average solution (EDAS) method. The subsequent process parameters are kept constant: boron carbide abrasive, amplitude of vibration (3–5 µm) and frequency (20 kHz) and the other parameters abrasive grit size, abrasive flow rate, power rating and slurry concentration are considered for evaluation. The corresponding response parameters viz material removal rate (MRR), tool wear rate (TWR) and overcut (OC) are measured for every experimental runs. Two different levels of abrasive grit size and four different levels of flow rate, power rating and slurry concentration are selected for detailed experimentation. CRITIC method has been applied for identifying the most influencing process parameter and accordingly weights have been assigned to the other process parameters. By implementing the EDAS method, the highest rank of the parametric combinations of process parameters are found out which tends to maximize MRR and minimize TWR and OC. Among all the parameters abrasive grit size is found to be the most significant parameter influencing the response parameters.
Published Version
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