A methodology for holistic lifecycle approach as decision support system for closed-loop lifecycle management
Başlık çevirisi mevcut değil.
- Tez No: 402380
- Danışmanlar: PROF. DIMITRIS KIRITSIS
- Tez Türü: Doktora
- Konular: Endüstri ve Endüstri Mühendisliği, İşletme, Industrial and Industrial Engineering, Business Administration
- Anahtar Kelimeler: Holistic lifecycle approach, life cycle thinking, sustainability assessment, closed-loop lifecycle management, decision support system, life cycle assessment, life cycle costing, social life cycle assessment
- Yıl: 2015
- Dil: İngilizce
- Üniversite: Ecole Polytechnique Fédérale de Lausanne (EPFL)
- Enstitü: Yurtdışı Enstitü
- Ana Bilim Dalı: Belirtilmemiş.
- Bilim Dalı: Belirtilmemiş.
- Sayfa Sayısı: 181
Özet
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Özet (Çeviri)
Sustainability of their products and practices provides companies with a competitive set of methods and tools to maintain, improve and expand customer and supplier relationships and to ensure access to strategic markets. Companies pay a lot of attention to produce more sustainable products and contribute to the overall sustainability. Most of the companies manage to use lighter materials or change the material with a recyclable one or try to decrease the energy used for manufacturing. However most of these attempts are related to only one part of the life cycle or one aspect of sustainability. In spite the fact that sustainability is thought to be related with the environmental aspects of the product, it is a broad concept and has economic and social dimensions. This makes the evaluation of sustainability a very complex matter. On top of that, to achieve a certain level of sustainability, it is necessary to take into account the whole life cycle of products (life cycle perspective) from material extraction and manufacturing to use and disposal when a decision has to be made about sustainability performance. Life cycle thinking or life cycle perspective takes into account the whole life cycle of the product. The main feature of life cycle thinking is to avoiding problem shifting. This helps not only to take into account all necessary aspects in evaluation of sustainability but also make a more accurate assessment. The proposed methodology, holistic life cycle approach, combines a number of life cycle evaluation methodologies; life cycle assessment (LCA), life cycle costing (LCC), and social life cycle assessment for (S-LCA), in order to evaluate the sustainability performance of the products. Since the forementioned methods are data intensive procedures and constrained with the availability of data, it is necessary to have an information and knowledge management system for collection and aggregation of life cycle data and distribution of feedback information. Product lifecycle management system help to manage product related information through its life cycle. However, generally the capabilities of PLM systems are limited to the operations of one company or in some cases it might have been extended to their 1st degree partners. Additionally, the information flow of the product is often restricted to the beginning of life (BOL) phase. Closed-Loop Lifecycle Management is a more recent concept which goes beyond the limits of traditional PLM systems and is targeting seamless information flow across all phases of the life cycle. Closed-loop PLM systems use product embedded identification devices (PEIDs) and enables to gather and distribute life cycle information through the life cycle of a product more precisely. This information is prerequisite for evaluation of the products sustainability performance. Closed-loop PLM systems are capable of gathering life cycle data and processing it in order to make informed decisions towards sustainability. Closed-loop Lifecycle Management contains four main components, PElDs' for collecting data, middle-ware to combine different applications and collect and distribute life cycle data, a decision support system (DSS) to transform the collected data into usable information and a product knowledge and management sys-tem (PDKM) to manage the information and knowledge generated through the life cycle of the product. In automotive industry PLM systems are used to manage the life cycle data but these systems are somehow separate from each other. It is needed to develop a middleware to combine the separate PLM systems, a DSS to transform gathered data into necessary information and knowledge for specific applications and a PDKM to manage the information and knowledge. Holistic life cycle approach takes into account the whole life cycle of the product and generates performance characteristics, which might be configured in order to evaluate the sustainability performance of the product. A Closed-Loop Lifecycle Management system containing a DSS configured with the holistic life cycle approach will be an efficient tool to evaluate and improve the sustainability performance of products. The proposed methodology benefits from the comprehensiveness of the life cycle thinking and integrates the tools for evaluation of all aspects of sustainability. It has been applied to three test cases and validated. The first two test cases belong to EC FP7 SuPLight project, where the effect of using recycled material on high-end automotive and aeronautics components made of wrought aluminum alloys was investigated. Through the life cycle of the automotive components, the BOL phase is prevailing in which using recycled material reduces the environmental impact of the components drastically. On the other hand, MOL phase is the dominant phase for aeronautics components. Reducing the weight of the component could be more effective than using recycled material. The third test case belongs to Eco-Innovera SuWAS project, in which recycling and incineration of waste inkfrom flexographic printing are compared. The environmental impact of both scenarios are comparable where recycling offers economic benefits and job creation through innovation. Finally, the results of this work have been published in conferences and journal papers.
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