What type of study is this?

This is a In Vitro Study study.

August 17, 2025

Multi-Objective Electric Discharge Machining Process Parameters Optimization of Inconel 718 by using Full Factorial Design of Experiments.

Key Points

Achieving an MRR of 54.12 mm³/min while minimizing Ra to 3.38 µm enhances machining outcomes.
Statistical validation via ANOVA confirmed the effectiveness of the full factorial design method used here.
Three key EDM parameters were investigated: pulse on time, pulse off time, and peak current.
These results support the potential of optimizing EDM for improved performance with nickel-based super alloys.

Abstract

This study investigates the optimization of Electrical Discharge Machining (EDM) parameters for Inconel 718 using a copper electrode, focusing on improving material removal rate (MRR) and minimizing surface roughness (Ra). A full factorial design of experiments (DOE) was employed with three key input parameters: pulse on time, pulse off time, and peak current. Regression models and machine learning algorithms were applied to predict response outcomes, with statistical validation through ANOVA and multi-objective optimization using desirability functions. The optimal parameters achieved an MRR of 54.12 mm³/min and Ra of 3.38 µm. The findings demonstrate the effectiveness of full factorial design of the exprements in enhancing EDM performance, supporting its adoption for precision machining of nickel-based super alloys.

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