Experimental Investigation of Machining NIMONIC 80 Alloy by WEDM Process via Multi-objective Optimisation Techniques: A Sustainable Approach

Sustainable machining should address manufacturing sustainability. Sustainable means something can be sustained, or continue at the same level, in principle forever. Sustainable manufacturing is the production of environmentally friendly, energy-and resource-efficient, and safely produced items. This term incorporates sustainable and eco-friendly product manufacturing. Sustainability in machining is the creation of items (components, etc.) using a non-polluting, minimal, and conserving subtractive cutting method. Conventional machining techniques are being phased out in favour of non-traditional machining processes due to increased demand for high surface polish and complicated form geometries. Wire EDM is a non-traditional machining method. Surface roughnessSurface Roughness, MRRMaterial Removal Rate (MRR), and kerfKerf width are crucial in machining. This project summarises the Taguchi optimisation strategy, utility method, and confirmation test to optimise Wire EDM cutting parameters for NIMONIC 80 ALLOY. Optimisation aims to minimise Kerf breadth while maximising MRR and surface quality. NIMONIC 80 ALLOYNIMONIC 80 Alloy is used in this work. Die electric fluid is DI water, and the tool is 0.25 mm brass wire. This project uses Taguchi’s L9 orthogonal array. Optimising pulse onPulse-on, pulse offPulse-off, wire feedWire feed, and feed wire tensionFeed wire tension. MRR, surface roughness, and KerfKerf were assessed. Multiple outputs make it difficult to choose a single ideal parameter setting. Taguchi-PSITaguchi-PSI and Gray Relational AnalysisGray Relational Analysis (GRA) as the multi-optimisation approach are used to reduce ambiguity.