Multi-objective Evolutionary Algorithms (MOEAs) in PMEDM - A Comparative Study in Pareto Frontier

Abstract: Electrical discharge machining (EDM) is a crucial process in precision manufacturing, leveraging electro-thermal energy to remove material without electrode contact. In this study, we delve into the realm of Machine Learning (ML) to enhance the efficiency and precision of EDM, particularly focusing on Powder-Mixed Electrical Discharge Machining (PMEDM) with the integration of a vibration system. We comprehensively evaluate four leading ML models - Deep Neural Network (DNN), Extreme Gradient Boosting (XGBoost), Adaptive Gradient Boosting (AdaBoost), and ElasticNet, against a pool of ML models, employing various evaluation metrics including Accuracy, Mean Squared Error (MSE), Root Mean Squared Error (RMSE), and Mean Absolute Error (MAE). Our evaluations, conducted on datasets enriched with features derived from powder addition and electrode vibration, reveal XGBoost superior accuracy, followed by AdaBoost, DNN, and ElasticNet. Furthermore, through the integration of Multi-Objective Evolutionary Algorithms (MOEAs) such as NSGA-II, NSGA-III, UNSGA-III, and C-TAEA, we explore and optimize the Pareto front to attain optimal solutions. Our findings underscore the transformative potential of ML and optimization techniques in advancing EDM processes, offering cost-effective, time-efficient, and reliable solutions for precision manufacturing applications.