In the 21 st century, manufacturing companies are facing the challenge to remain competitive in global markets by finding a more sustainable approach to product design and manufacturing. This is associated with the main features of companies' competitive landscapes namely, simultaneous cost reduction and quality improvement of the product. It may appear that reaching both these goals together is prohibitively problematic as they are considered by "manufacturing leaders" as opposing objectives. However, much recent research has been done on introducing approaches to delivering low cost, high quality sustainable products based on finding a link between the design or the manufacturing processes and other key elements of sustainability; economic, environmental, and social. Indeed, these approaches often times include limitations such as the lack of integration between the design and manufacturing stages of the product and do not adequately address three key parts of sustainability; economic, environmental, and social. Consequently, these approaches, have a low applicability, and hence few opportunities for success. However, for delivering a sustainable product, the key parts of sustainability, as well as the integration of product design and manufacturing processes must be optimised in terms of one effective measure. This project aims to propose an approach for design and manufacturing sustainability. The combined sustainability index (CSI) is developed as a comprehensive evaluation metric for alternative scenarios of the process and also as a tool that enables decision makers to run optimal processes. The applicability of the CSI has to be tested and verified in a real industrial setting with the aim to improve the sustainability performance by designing a product and the corresponding manufacturing processes for that product. Process optimisation is carried out in terms of the highest CSI score achieved.
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