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Optimising the operational parameters and conditions to enhance the environmental sustainability of turning operation

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dc.contributor.advisor Gamage JR
dc.contributor.advisor Karunathilake HP
dc.contributor.author Fernando WLR
dc.date.accessioned 2021
dc.date.available 2021
dc.date.issued 2021
dc.identifier.citation Fernando, W.L.R. (2021). Optimising the operational parameters and conditions to enhance the environmental sustainability of turning operation [Master's theses, University of Moratuwa]. Institutional Repository University of Moratuwa. http://dl.li http://dl.lib.uom.lk/handle/123/21347
dc.identifier.uri http://dl.lib.uom.lk/handle/123/21347
dc.description.abstract The manufacturing sector accounts for nearly 40% and 25% of global energy and resources consumption respectively. The die and mould manufacturing (DMM) sector, contributes largely to the energy and resource consumption in emerging economies. Turning is a popular and essential mode of machining within this sector. Furthermore, operational energy usage and metalworking fluid (MWF) consumption of turning have been identified as the key sources of environmental impacts in this process. However, there is a lack of evidence on analysing environmental impacts of lathe operations in the DMM sector compared to milling operation. Therefore, the purpose of this study is to identify and analyse the life cycle environmental impacts of the commercial turning operation. A series of case studies was conducted in DMM centres to explore the state-of-the-art industrial turning operation. Then, a set of experiments was designed using the Taguchi L 9 method, considering the mostly used workpiece material, cooling condition and cutting parameters. Experiments were performed to evaluate the energy consumption, metalworking fluid (MWF) consumption, surface roughness and material removal rate during turning of AISI P20 with both wet and dry machining. A life cycle assessment (LCA) was performed using SimaPro LCA software with Ecoinvent database version 8.5 to assess the environmental performance of turning. A multiresponse optimisation was performed using Grey-based Taguchi method to identify the optimum operating conditions. The results show that turning with wet machining yields better machining and environmental performances compared to dry machining. The largest portion of the energy is consumed for non-productive operations. The LCA results reveals electrical energy as the highest contributor under most of the impact categories. The workpiece material, AISI P20 and cutting insert material show significant contributions to aquatic ecosystems and resource consumption. However, the contribution of MWF on the midpoint impact categories is negligible. Further, the research presents optimum turning parameters to obtain better machining performances while maintaining lower environmental footprint in the context of turning of AISI P20 with wet machining. en_US
dc.language.iso en en_US
dc.subject SUSTAINABLE MACHINING en_US
dc.subject TURNING OPERATION en_US
dc.subject LIFE CYCLE ASSESSMENT en_US
dc.subject ENVIRONMENTAL IMPACT en_US
dc.subject MECHANICAL ENGINEERING – Dissertation en_US
dc.title Optimising the operational parameters and conditions to enhance the environmental sustainability of turning operation en_US
dc.type Thesis-Abstract en_US
dc.identifier.faculty Engineering en_US
dc.identifier.degree MSc In Mechanical engineering by research en_US
dc.identifier.department Department Mechanical Engineering en_US
dc.date.accept 2021
dc.identifier.accno TH4853 en_US


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