A Novel Holistic Index for the Optimization of Composite Components and Manufacturing Processes with Regard to Quality, Life Cycle Costs and Environmental Performance

Katsiropoulos, Ch.V.; Pantelakis, Spiros

doi:10.3390/aerospace7110157

Cited by 12 publications

(12 citation statements)

References 46 publications

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“…The tool implemented in the current study to assess the performance of the investigated components is an adaptation of a holistic approach initially introduced in [40]. The proposed model has been successfully implemented as a decision-making tool to aid stakeholders in selecting appropriate manufacturing methods [40] and recycling processes [6] while accounting for the technical, ecological, and economic features of the materials and/or processes applied. A quantitative index was derived as an output of the approach introduced in [40]:…”

Section: Definition Of the Decision-making Holistic Toolmentioning

confidence: 99%

Assessment of the Impact of Material Selection on Aviation Sustainability, from a Circular Economy Perspective

Markatos

Pantelakis

2022

Aerospace

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Climate change and global warming pose great sustainability challenges to the aviation industry. Alternatives to petroleum-based fuels (hydrogen, natural gas, etc.) have emerged as promising aviation fuels for future aircraft. The present study aimed to contribute to the understanding of the impact of material selection on aviation sustainability, accounting for the type of fuel implemented and circular economy aspects. In this context, a decision support tool was introduced to aid decision-makers and relevant stakeholders to identify and select the best-performing materials that meet their defined needs and preferences, expressed through a finite set of conflicting criteria associated with ecological, economic, and circularity aspects. The proposed tool integrates life-cycle-based metrics extending to both ecological and economical dimensions and a proposed circular economy indicator (CEI) focused on the material/component level and linked to its quality characteristics, which also accounts for the quality degradation of materials which have undergone one or more recycling loops. The tool is coupled with a multi-criteria decision analysis (MCDA) methodology in order to reduce subjectivity when determining the importance of each of the considered criteria.

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Section: Definition Of the Decision-making Holistic Toolmentioning

confidence: 99%

Assessment of the Impact of Material Selection on Aviation Sustainability, from a Circular Economy Perspective

Markatos

Pantelakis

2022

Aerospace

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“…The EoL Index introduced herein is an adaptation of the Index proposed in [30]; the latter was identified as a decision-making tool to aid engineers select an appropriate manufacturing technique for certain components as well as define the optimal process parameters for the implementation of each technique. The selected process parameters reflect a trade-off between quality, cost and environmental footprint of the existing component.…”

Section: Definition Of the Indexmentioning

confidence: 99%

“…In a circular economy, the achievement of a closed-loop recycling (CLR) approach is the primary target across the recycling industries [30][31][32]. According to this approach, the valuable fibers from composite wastes, such as the carbon fibers, must be reclaimed, remanufactured, and reused into a new composite.…”

Section: Quality Term (Q) Definitionmentioning

confidence: 99%

“…With regard to previous works and relevant literature data [19,27,42], the costs selected for the calculation of the Index proposed in the current study and the respective values are summarized in Table 2. Operation costs were calculated by multiplying the cost of kWh (0.114€ [30]) with the Primary Energy Demand (PED) of each process (obtained from Tab. 1).…”

Section: Cost Term (C) Definitionmentioning

confidence: 99%

“…1). The labor cost was considered equal to 32.6 €/h [30] and assumed 4 operating personnel [27,42]. Prior to the recycling process, CFRP components usually must be manually dismantled from the vehicle or part.…”

Section: Cost Term (C) Definitionmentioning

confidence: 99%

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A holistic End-of-Life (EoL) Index for the quantitative impact assessment of CFRP waste recycling techniques

et al. 2021

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In the present study, a holistic End-of-Life (EoL) Index is introduced to serve as a decision support tool for choosing the optimal recycling process among a number of alternative recycling techniques of CFRP waste. For the choice of the optimal recycling process, quality of the recycled fibers as well as cost and environmental impact of the recycling methods under consideration, are accounted for. Quality is interpreted as the reusability potential of the recycled fibers; that is quantified through the equivalent volume fraction of recycled fibers that balances the mechanical properties of a composite composed of a certain volume fraction of virgin fibers. The proposed Index is offering an estimated balanced score, quantifying a trade-off between the reusability potential of the recycled fibers as well as the cost and the environmental impact of the recycling methods considered.

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A novel life cycle assessment and life cycle costing framework for carbon fibre-reinforced composite materials in the aviation industry

Sadhukhan

Murphy

et al. 2023

Int J Life Cycle Assess

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Purpose Carbon fibre-reinforced composite materials offer superior mechanical properties and lower weight than conventional metal products. However, relatively, little is known about the environmental impacts and economic costs associated with composite products displacing conventional metal products. The purpose of this study is to develop an integrated life cycle assessment and life cycle costing framework for composite materials in the aviation industry. Methods An integrated life cycle assessment (LCA) and life cycle costing (LCC) framework has been developed. The displacement of a conventional aluminium door for an aircraft by a composite door is presented as an example of the use of this framework. A graphical visualisation tool is proposed to model the integrated environmental and economic performances of this displacement. LCA and LCC models for composite applications are developed accordingly. The environmental hotspots are identified, and the sensitivity of the environmental impact results to the different composite waste treatment routes is performed. Subsequently, the research suggests a learning curve to analyse the unit price for competitive mass production. Sensitivity analysis and Monte Carlo simulation have been applied to demonstrate the cost result changes caused by data uncertainty. Results Energy consumption was the hotspot, and the choice of composite waste treatment routes had a negligible effect on the LCA outcomes. Concerning the costs, the most significant cost contribution for the unit door production was labour. The future door production cost was decreased by about 29% based on the learning curve theory. The uncertainties associated with the variables could lead to variations in the production cost of up to about 16%. The comparison between the two doors shows that the composite door had higher potential environmental impacts and cost compared to the conventional aluminium door during the production stage. However, the composite door would have better environmental and financial performance if a weight reduction of 47% was achieved in future designs. Conclusions The proposed framework and relevant analysis models were applied through a case study in the aerospace industry, creating a site-specific database for the community to support material selection and product development. The graphical tool was proved to be useful in representing a graphical visualisation comparison based on the integration of the LCA and LCC results of potential modifications to the composite door against the reference door, providing understandable information to the decision-makers.

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A Novel Holistic Index for the Optimization of Composite Components and Manufacturing Processes with Regard to Quality, Life Cycle Costs and Environmental Performance

Cited by 12 publications

References 46 publications

Assessment of the Impact of Material Selection on Aviation Sustainability, from a Circular Economy Perspective

Assessment of the Impact of Material Selection on Aviation Sustainability, from a Circular Economy Perspective

A holistic End-of-Life (EoL) Index for the quantitative impact assessment of CFRP waste recycling techniques

A novel life cycle assessment and life cycle costing framework for carbon fibre-reinforced composite materials in the aviation industry

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