Design for circular disassembly: Evaluating the impacts of product end-of-life status on circularity through the parent-action-child model

Formentini, Giovanni; Ramanujan, Devarajan

doi:10.1016/j.jclepro.2023.137009

Cited by 9 publications

(8 citation statements)

References 52 publications

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“…This categorization helps us understand DfX methods better. Each method is designed for specific aspects of designing and developing a product, working together to ensure the final product and its processes are excellent (Kremer, et al, 2023;Walid, et al, 2023;Mesa, 2023;Formentini, et al, 2023). In response to the urgent need to address climate change, sustainability requirements for products have expanded significantly.…”

Section: Research Backgroundmentioning

confidence: 99%

“…Design for disassembly approaches play a significant role in facilitating the transition to an industrial circular economy. Nevertheless, a noteworthy constraint in existing design for disassembly methods is their incapacity to model the consequences of a product's end-of-life status on the actual disassembly effort and the resulting implications for the applied circular design strategies (Formentini, et al, 2023). In product development, designers have to access well-structured knowledge in a systematic approach, so that designers may be able to use organized knowledge to enhance their creativity during decisionmaking (Pahl, et al, 2006).…”

Section: Research Backgroundmentioning

confidence: 99%

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Enhancing knowledge management in the engineering design process through a communication platform

Ugurlu,

Grafinger,

Gerhard

et al. 2024

Proc. Des. Soc.

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In today's competitive market, design firms are under pressure to enhance the speed of their decision-making processes to foster innovative products. Due to specialized nature of contemporary technology, enterprises are directed to consider Design for X factors during the product development process like environmental impact and production efficiency. This transformation leads to an increase in gaining knowledge from different fields. This paper presents a comprehensive framework for efficiently acquiring and applying knowledge, aimed at improving knowledge management and sharing practices.

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Section: Research Backgroundmentioning

confidence: 99%

Section: Research Backgroundmentioning

confidence: 99%

Enhancing knowledge management in the engineering design process through a communication platform

Ugurlu,

Grafinger,

Gerhard

et al. 2024

Proc. Des. Soc.

View full text Add to dashboard Cite

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“…Design for Circular Disassembly (DfCD) is a method aimed at identifying shortcomings in product design related to disassembly efforts that could compromise the overall product circularity performance (Formentini and Ramanujan, 2023b). The DfCD method differs from traditional DfD methodologies since it enables the consideration of failures that the product might have at its End of Life, looping it back at the design phase to enable the optimization of the product toward circularity.…”

Section: Design For Circular Disassembly Applied To Large and Complex...mentioning

confidence: 99%

“…The DfCD method differs from traditional DfD methodologies since it enables the consideration of failures that the product might have at its End of Life, looping it back at the design phase to enable the optimization of the product toward circularity. Indeed, traditional DfD methods do not consider the EoL phase, but aim to improve disassembly performances based on ideal (or perfect) product conditions, providing limited insights for enabling the Circular Economy paradigm (Formentini and Ramanujan, 2023b). The DfCD method follows a four-step approach to assist designers and engineers in evaluating selected products by computing two indicators: i) Disassembly Effort Index (DEI) and ii) Circularity Index (CI).…”

Section: Design For Circular Disassembly Applied To Large and Complex...mentioning

confidence: 99%

“…End-of-Life (EoL) decision-making, from a circularity perspective, requires considering the EoL status of a product and the impacts it has on the disassembly process. To address this knowledge gap, a method called Design for Circular Disassembly (DfCD) was proposed by Formentini and Ramanujan (2023b). The method consists of four steps to assess a product in terms of circularity and disassembly efficiency, and identifying design drawbacks that may jeopardize the product's circularity potential at its EoL.…”

Section: Introductionmentioning

confidence: 99%

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Assessing the disassembly performance of washing machines through the design for circular disassembly methodology

Formentini,

Martiny,

Møller

et al. 2024

Proc. Des. Soc.

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To enable the circular economy paradigm, it is important to design easy-to-disassemble products. A new method, known as Design for Circular Disassembly (DfCD), has been proposed to enhance product disassembly performances toward circularity. The method was tested on a small-sized product, showing promising results. However, its applicability to medium-sized products remains unclear. The goal of this article is to assess the effectiveness of DfCD on medium-sized products, particularly washing machines. Results showed DfCD can be extended to medium-sized products, increasing model complexity.

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Accounting for product recovery potential in building life cycle assessments: a disassembly network-based approach

Abu-Ghaida,

Ritzen,

Hollberg

et al. 2024

Int J Life Cycle Assess

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Purpose Existing life cycle assessment (LCA) methods for buildings often overlook the benefits of product recovery potential, whether for future reuse or repurposing. This oversight arises from the limited scope of such methods, which often ignore the complex interdependencies between building products. The present paper, backed by its supplementary Python library, introduces a method that addresses this gap, emphasizing the influence of product interdependencies and future recovery potential on environmental impact. Methods Implementing the proposed method requires adding a phase, the recovery potential assessment, to the four phases that constitute an LCA according to the ISO 14040/14044 guidelines. Given the disassembly sequence for each product, in the first step of the recovery potential assessment, a disassembly network (DN) is created that displays structural and accessibility dependencies. By calculating the average of the disassembly potential (DP) of each structural dependency (second step) associated with that product, we obtain the DP (0.1–1) at the product level in a third step. Because there is no empirical data available to support a specific relationship between product disassembly potential and recovery potential (RP) (0–1), we employ, in a fourth step, a flexible model specification to represent scenarios of how this relationship may look like. Ultimately, for each scenario, the resulting RP is used to enable a probabilistic material flow analysis with a binary outcome, whether to be recovered or not. The resulting product-level median material flows are then used to quantify the building’s environmental impact for a given impact category in the life cycle impact assessment (LCIA). The results are interpreted through an uncertainty, hotspot, and sensitivity analysis. Results and discussion Our results show that not considering the interdependencies between building products in building LCAs results in underestimating the embodied greenhouse gas (GHG) emissions by up to 28.29%. This discrepancy is primarily attributed to a failure to account for additional material flows stemming from secondary replacements owing to the interdependencies during the life cycle. When accounting for end-of-life recovery benefits, a zero-energy building (ZEB) design incorporating some DfD principles demonstrated up to 45.94% lower embodied GHG emissions than the ZEB design with low disassembly potential when assuming that recovered products will be reused. Conclusions Our approach provides first-of-a-kind evidence that not accounting for recovery potential may significantly distort the results of an LCA for buildings. The method and its supporting code support the semi-automated calculation of the otherwise neglected potential environmental impact, thus helping to drive the transition towards a more sustainable built environment. The supporting code allows researchers to build on the proposed framework if more data on the relationship between DP and RP become available in the future. Finally, while applied to buildings in this paper, the proposed framework is adaptable to any complex product with limited modifications in the supporting code.

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Design for circular disassembly: Evaluating the impacts of product end-of-life status on circularity through the parent-action-child model

Cited by 9 publications

References 52 publications

Enhancing knowledge management in the engineering design process through a communication platform

Enhancing knowledge management in the engineering design process through a communication platform

Assessing the disassembly performance of washing machines through the design for circular disassembly methodology

Accounting for product recovery potential in building life cycle assessments: a disassembly network-based approach

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