Fraunhofer-Institut für Produktionsanlagen und Konstruktionstechnik IPK

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  • Publication
    Increasing resource efficiency with an engineering decision support system for comparison of product design variants
    ( 2019)
    Buchert, Tom
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    Ko, Nathanael
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    Graf, Roberta orcid-logo
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    Vollmer, Thomas
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    Alkhayat, Moritz
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    Brandenburg, Elisabeth
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    Stark, Rainer
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    Klocke, Fritz
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    Leistner, Philip
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    Schleifenbaum, Johannes Henrich
    The development of sustainable and resource-efficient products requires consideration of multiple design targets concerning the whole product life cycle. Taking these factors into account leads to complex decision situations with conflicting targets and trade-offs. To support design engineers in these situations an Engineering Decision Support System (EDSS) has been developed. In this article, the overall concept of the EDSS is presented. Furthermore, one function of the EDSS to assist a systematic comparison of product variants is introduced in detail. It is based on combining an existing PLM solutions (in particular Siemens Teamcenter 11/Siemens NX9) and software for Life Cycle Assessment (GaBi 7). Beyond a proof of concept for information exchange between both systems a methodology is presented which enables design engineers to systematically assess and select multiple product variants based on their resource utilization. The approach is complemented with a comprehensive case study for different design options of a core slide. In the scope of this study, variations of geometry (solid vs. hollow design), materials (hot-working steel vs. nickel-based superalloy) and manufacturing processes (laser metal deposition vs. milling) were considered. Furthermore, a usability study of the decision support tool is shown.
  • Publication
    Resource optimized product design - assessment of a product's life cycle resource efficiency by combining LCA and PLM in the product development
    ( 2016)
    Ko, Nathanael
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    Graf, Roberta orcid-logo
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    Buchert, Tom
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    Kim, Marcus
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    Wehner, Daniel orcid-logo
    Decisions in the product design phase have a significant influence on the resource demand of a product over its entire life cycle. However, relationships between decisions made in the design phase and the life cycle are difficult to evaluate and express. Hence, resource efficiency is typically only assessed after the product has already been designed and gone into production. If the impacts of decisions made in the design phase are neglected a considerable potential for saving resources is ignored. The aim of the presented work is to make use of this potential. Therefore the determination of the connections between design decisions and resource demand in the manufacturing, use and end of life phase is essential. Mapping these connections and the use of LCA methods allows for the expression of the overall resource demand as a function of the product's design. With this information at hand a design engineer is able to evaluate a design early enough i.e. before going into production. The provided approach results in an integration of an LCA tool into the engineering workplace consisting of a PLM and a CAD system. It aims for significantly more resource efficient products by partially automated creation and evaluation of alternative product designs. Therefore, design engineers are enabled to develop products with an enhanced resource efficiency over the entire product lifecycle.