2. Ερευνητικές - Επιστημονικές Δημοσιεύσεις του Ακαδημαϊκού Προσωπικού
Μόνιμο URI για αυτήν την κοινότηταhttps://repository2024.ihu.gr/handle/123456789/30486
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Πλοήγηση 2. Ερευνητικές - Επιστημονικές Δημοσιεύσεις του Ακαδημαϊκού Προσωπικού ανά Συγγραφέα "Aidonis, D."
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Τεκμήριο Identifying the optimal strategy for suppliers’ involvement in product design: A case study(2014-05) Achillas, Ch.; Aidonis, D.; Folinas, D.; Moussiopoulos, N.; Triantafillou, D.In order to increase efficiency and improve competitiveness, manufacturers around the globe are focusing on developing their core businesses. On the other hand, standard activities of engineering are optimally accomplished outside the borders of the firm; thus outsourcing of non-core businesses has become lately a common practice. Product design is considered as one of the most important phases in a product’s life cycle, since the majority of most critical decisions in terms of products’ overall performance are considered during the Research & Development (R&D) phase. Involving suppliers in a firm’s R&D offers significant benefits in various directions, such as feasibility, practicability, sustainability, competitiveness and innovativeness. However, selecting the optimal outsourcing strategy is not an easy decision. On the contrary, it is most challenging since it encompasses a number of different and in many cases mutually conflicting criteria. This paper presents a methodological approach for the selection of the optimal outsourcing strategy for a manufacturer’s R&D. The methodology is based on outranking multicriteria methods and more specifically ELECTRE III. The approach is illustrated and validated through a real world case study of a Greek olive oil producer.Τεκμήριο A methodological framework for the inclusion of modern additive manufacturing into the production portfolio of a focused factory(2014-08-28) Achillas, Ch.; Aidonis, D.; Iakovou, E.; Thymianidis, M.; Tzetzis, D.Additive manufacturing (AM) is an advanced technology where products are manufactured by building up thin layers of materials from digitized three-dimensional (3D) designs virtually constructed using advanced computer-aided design software. This freeform fabrication enhances dramatically the potential of design, pushing the boundaries of manufacturability. The aim of this paper was to provide a decision-making framework for the selection of an effective portfolio of production strategies, including alternative AM and traditional manufacturing technologies. To that end, a methodological framework is proposed which combines multi-criteria decision aid (MCDA) and data envelopment analysis (DEA) for the determination of the optimal production strategy within the concept of “focused” factory. In this light, modern AM technologies are assessed for a number of selected criteria (e.g. production cost, lead time, quality) together with existing production strategies that involve conventional production methods, such as injection molding, CNC machining, etc. The adopted framework is applied on a real-world case regarding the production of security keyboard polymer housings. According to the findings, modern AM technologies provide efficient manufacturing solutions for small production volumes, thus enhancing supply chain responsiveness through make-to-order strategy and customization possibilities. Furthermore, AM seems capable to contribute also to traditional mass production systems, by improving significantly the productivity of injection molds. The proposed framework could not only assist decision-makers in the selection of the optimal production strategy, but it could also provide crucial benchmarks for different production alternatives.