| 1. |
- Bonilla Hernández, Ana Esther
(författare)
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On how the selection of materials affects sustainability
- 2019
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Ingår i: Procedia Manufacturing. - : Elsevier BV. - 2351-9789. ; 33, s. 625-631
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Tidskriftsartikel (refereegranskat)abstract
- The selection of the materials for the production of aerospace engine products is directly related to their performance in tough working conditions. However, the extraction of the materials requires high amounts of energy, use water and emit CO2, which can be directly related with environmental sustainability. The abundance of the materials and their sourcing and geographical location can be further related to economic and social sustainability. Manufacturing companies look for different materials and cutting data that will optimize material removal rate, cutting tool utilization, required cutting time, costs, energy used, CO2 footprint, coolants, etc. Here is presented a simple methodology to calculate the sustainability impact of the selection of materials. The study compares a simplified theoretical work piece that is geometrically complex and made of difficult to machine material, e.g. Ti-6Al-4V and MP159. The study shows how to select the optimal material, not only in terms of costs, but also in terms of environmental, societal and economical sustainability. © 2019 The Authors. Published by Elsevier B.V.
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| 2. |
- Bonilla Hernández, Ana Esther, et al.
(författare)
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Process sustainability evaluation for manufacturing of a component with the 6R application
- 2019
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Ingår i: Procedia Manufacturing. - : Elsevier BV. - 2351-9789. ; 33, s. 546-553
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Tidskriftsartikel (refereegranskat)abstract
- Sustainability in manufacturing can be evaluated at product, process and system levels. The 6R methodology for sustainability enhancement in manufacturing processes includes: reduced use of materials, energy, water and other resources; reusing of products/components; recovery and recycling of materials/components; remanufacturing of products; and redesigning of products to utilize recovered materials/resources. Although manufacturing processes can be evaluated by their productivity, quality and cost, process sustainability assessment makes it a complete evaluation. This paper presents a 6R-based evaluation method for sustainable manufacturing in terms of specific metrics within six major metrics clusters: environmental impact, energy consumption, waste management, cost, resource utilization and society/personnel health/operational safety. Manufacturing processes such as casting, welding, turning, milling, drilling, grinding, etc., can be evaluated using this methodology. A case study for machining processes is presented as an example based on the proposed metrics. © 2019 The Authors. Published by Elsevier B.V.
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