Scenarios in Multi-objective Optimisation of Process Parameters for Sustainable Machining

Sustainable machining needs to consider multiple objectives for fulfilling environmental and economic requirements. Pareto front usually employed to present multi-objective optimisation results. However, the Pareto fronts are difficult to understand and inefficient when there are more than 2 objectives. This problem is addressed in this paper, by enumerating and characterising all the 128 scenarios in sustainable machining operation involving 7 objectives including energy, cost, time, power, cutting force, tool life and surface finish. Results show that all the scenarios can be converted to single-objective situation which has a unique solution or a set of conflicting bi -objective cases which can be represented as a single Pareto front.