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Considering LCA in System Architectures of Smart-Circular PSS

2023 , Kruschke, Thomas , Riedelsheimer, Theresa , Lindow, Kai

The realization of smart-circular Product-Service Systems has theoretically promising advantages compared to traditional products. Nevertheless, the sustainability improvement, especially for the ecological dimension is not yet satisfactorily proved. In this paper, the authors examined the current state of research within a systematic literature review with a specific focus on the overlap of the topics: Life Cycle Assessment, Model-Based Systems Engineering, Product-Service Systems, and Circular Economy. The aim is to analyze the potential of a proactive quantification of the ecological impact in an early stage during the development of smart-circular PSS - the system architecture definition. As a result of the systematic review, 27 relevant papers were identified and analyzed and the findings are presented in a structured way. The main finding is that the current state of the art in this research field still is in the conceptualization stage. In addition, a proactive approach is rare and circularity is not considered to its fullest. Quantified use cases do not draw the system boundaries Cradle-to-Cradle and not every of the 9R-strategies is considered. Furthermore, the potentials and challenges of the revealed research gap are summarized.

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An explorative multiple case study of smart-circular PSS - status quo in industry

2023 , Kruschke, Thomas , Riedelsheimer, Theresa

The business as usual is not yet decoupled from current environmentally damaging value creation. This raises the continuous need for new solutions to allow for the operationalization of R-strategies. One specific approach is the establishment of smart-circular Product-Service-Systems considering all three sustainability strategies – efficiency, consistency and sufficiency – in the entire product lifecycle. Within this multiple case study, 30 existing use cases from different industries, which are already interconnected PSS, were analysed in detail using the following criteria: Level of sustainability reporting, B2B or B2C, product focus, sustainable PSS types, classification of smart PSS elements and the realization of R-strategies subdivided into smart and conventional operationalization. Descriptions in the websites, videos and sustainability reports of the respective PSS providers served as the data source for this multiple case study. In addition, to the authors further data collection, using the replication logic of Yin, seven case studies from the scientific literature dealing with the topic of implementation of PSS were an inspiration and some of the use cases have been used for this paper. To validate the above criteria, 30 PSS providers were contacted, 6 of whom responded and confirmed the assessment. The main results were: Findings of the analysed criteria and future research directions.

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Kann Systems Engineering eine nachhaltige Produktentwicklung unterstützen

2022 , Kruschke, Thomas , Kaufmann, Uwe , Lindow, Kai

Systems Engineering (SE) wird erfolgreich für die Entwicklung komplexer Sys-teme eingesetzt. Komplexität äußert sich vor Allem in der Berücksichtigung der Vielzahl von Entwicklungszielen und der Wechselwirkung von Einflussparame-tern in einem multikriteriellen Entwicklungsprozess für Produkt-Service-Umgebungen. Es ist daher naheliegend, die vielversprechenden Vorteile des SE für die Entwicklung nachhaltiger Produkte zu nutzen. In diesem Konferenzbeitrag werden die Herausforderungen zur Umsetzung der Nachhaltigkeitsstrategien beschrieben, es wird auf die Vorteile von Modell-Basierten Systems Engineering (MBSE) eingegangen sowie der theoretische Hintergrund und die Aufgaben der neuen Arbeitsgruppe Sustainability enabled by Systems Engineering der GfSE vorgestellt. Deren Zielstellung ist es, den Beitrag zu identifizieren, den SE und insbesondere das MBSE für eine nachhaltige Produktentwicklung leisten kann. Dafür wurden insgesamt 13 Fragen formuliert und in einer Roadmap eingeordnet, mit denen sich die Arbeitsgruppe in den nächsten Jahren beschäftigen wird.