Abstract
Reducing energy usage is an essential consideration in sustainable manufacturing. This paper presents a multi-objective optimization model based on the trade-offs between sustainability, productivity and machining quality, which aims for reducing the cutting energy in machining processes. Three objectives, surface roughness, material removal rate and energy consumption, are simultaneously optimized. Additionally, a method to determine the weight factors is proposed to calculate grey relational grade of multiple responses. Experiment used Taguchi design method was performed to verify the optimization model and promising results reducing the energy consumption of machining processes were achieved.
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