Identification of Parameters for Ultrasonic Machining (USM) on Drilling of Graphene Oxide/Pineapple Leaf Filler-Reinforced Epoxy Hybrid Composite Using TODIM Method

This paper aims at selecting the optimal parameters for drilling of graphene oxide/pineapple leaf filler-reinforced epoxy hybrid composite using ultrasonic machining (USM). The selection of optimal parameters has been done using the interactive multi-criteria decision-making (TODIM) 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 assigning weights to the process parameters. By implementing the TODIM method, the highest rank of the parametric combinations of process parameters is found out which tends to maximize MRR and minimize TWR and OC.