Optimizing sustainability performance through component commonality for multi-generational products

Hapuwatte, Buddhika M.; Badurdeen, Fazleena; Bagh, Adib; Jawahir, I.S.

doi:10.1016/j.resconrec.2021.105999

Cited by 14 publications

(14 citation statements)

References 26 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Others explored DfS optimization to identify metric models and constraints relevant to CE. For example, Hapuwatte et al [10] optimized the sustainability performance of multi-generational products by using design configuration choices based on TBL objectives: minimize greenhouse gas (GHG) emissions, maximize profit, and maximize product functionality. Other studies optimized product design by considering trade-offs between life cycle cost and environmental impact [11] and disassemblability [12].…”

Section: Current Literature On Optimization For Manufacturing Cementioning

confidence: 99%

Optimizing Product Life Cycle Systems for Manufacturing in a Circular Economy

Hapuwatte

Mathur

Last

et al. 2023

Lecture Notes in Mechanical Engineering

Self Cite

View full text Add to dashboard Cite

Global population growth and increasing resource scarcity are necessitating sustainable manufacturing and circular economy (CE) practices. These practices require the decisions made at each product life cycle (PLC) stage consider sustainability and circularity implications. We propose PLC system level optimization to identify the most favorable choices, instead of siloed individual PLC stage-specific optimizations. This should yield better circularity by permitting manufacturers to take a more holistic view and identify the areas of highest impact across the PLC. This paper presents initial work towards building a PLC system optimization framework. From an initial review of current circularity metrics, we identify metrics that are suitable for forming the optimization objectives. Second, we identify decision variables available to manufacturers across the PLC that are useful in optimizing the entire system’s circularity and sustainability. Finally, we identify limitations of current metrics, and discuss major challenges and potential solutions to PLC system optimization problems.

show abstract

Section: Current Literature On Optimization For Manufacturing Cementioning

confidence: 99%

Optimizing Product Life Cycle Systems for Manufacturing in a Circular Economy

Hapuwatte

Mathur

Last

et al. 2023

Lecture Notes in Mechanical Engineering

Self Cite

View full text Add to dashboard Cite

show abstract

“…In this work, those parameters are assumed to be deterministic. The diffusion parameters p and q are assumed to be the same for Gen1 and Gen2 [7].…”

Section: Simulation Setupmentioning

confidence: 99%

“…Previous work discussed [7] the use of the Norton-Bass (NB) diffusion model [9] to simulate the sales of two generations of a product. NB model Eqs.…”

Section: Modeling the Product Demand And Returnsmentioning

confidence: 99%

“…( 1) and (2) describe demand variations D 1 (t) and D 2 (t) for Gen1 and Gen2, respectively. All symbols have usual meanings [7] (and also provided in Table 1). Assuming the interval (t intro ) between generation introductions are the same (e.g., yearly refresh of smartphone generation), when τ i is introduction time of Gen-i, τ 3 can be approximated by τ 2 + t intro .…”

Section: Modeling the Product Demand And Returnsmentioning

confidence: 99%

“…Multi-generational product designing-design considering successive product generations-capitalizes on these opportunities. For example, overall sustainability performance of multi-generational product systems (PS) can be optimized by carefully selecting the IC level [7]. However, as Fig.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Classifying Multi-generational Products for the Circular Economy

Hapuwatte

Badurdeen

Jawahir

2023

Lecture Notes in Mechanical Engineering

Self Cite

View full text Add to dashboard Cite

Manufacturers are increasingly interested in the circular economy (CE) and potential of circular productions. To fully utilize CE, better guidance at the design stage is needed to establish closed-loop flows and prioritize higher value retaining end-of-use (EoU) practices such as reuse and remanufacture (i.e., parts harvesting). Intergenerational commonality (IC) is a method to increase EoU parts harvesting. However, closed-loop parts harvesting potential depends on the compatible timing between design generations' production and EoU returns curves. Therefore, in this paper, we explore an approach to make an initial assessment on where IC as a closed-loop CE strategy can produce most benefit, where such closed-loops may fall short, and what favorable design decisions can be made. The proposed indicator (based on the ratio between product's average usable lifetime and time between generation introductions, uavg/tintro) provides a basis for developing an objective design-support tool. Using a hypothetical example, we discuss the approach and effectiveness of this indicator. The insights gained suggest that overall production's sustainability performance show substantial improvement when uavg/tintro < 1.25, and the IC benefits are highest when 0.25 < uavg/tintro < 2.0. We also highlight a few managerial insights gained from the indicator useful to strategize EoU recovery and IC.

show abstract

Design for circularity and durability: an integrated approach from DFX guidelines

Mesa

2023

Res Eng Design

View full text Add to dashboard Cite

The design of circular products is now a trending topic that involves enabling reuse, repair, refurbishing, remanufacturing, and upgrading parts and products. In this field, using Design For X (DFX) tools appears to be an interesting and helpful way to address requirements and considerations by applying single design rules that can enhance performance in terms of circularity. However, the current DFX approaches are not formally oriented to a circular economy (CE), and there is no clear pathway to apply design rules for circular products. Therefore, this article proposes a classification of DFX rules based on seven CE strategies related to slowing and closing the loop of products, parts, and materials. The proposed approach consisted of a literature review, an analysis of DFX rules related to CE, and the classification of such rules in terms of CE strategies and product design stages. The analysis of DFX rules in product circularity provided insights to generate a specific design guideline of 51 rules for circular products. The guideline was denominated as the Design for Circularity and Durability (DFCD) and is proposed as a design tool for practitioners, designers, and academicians in CE. A case study is also presented to demonstrate the implementation and benefits of the DFCD guideline.

show abstract

Optimizing sustainability performance through component commonality for multi-generational products

Cited by 14 publications

References 26 publications

Optimizing Product Life Cycle Systems for Manufacturing in a Circular Economy

Optimizing Product Life Cycle Systems for Manufacturing in a Circular Economy

Classifying Multi-generational Products for the Circular Economy

Design for circularity and durability: an integrated approach from DFX guidelines

Contact Info

Product

Resources

About