Current options in the life cycle assessment of additive manufacturing products

Výtisk, Jan; Kočí, Václav; Honus, Stanislav; Vrtek, Mojmír

doi:10.1515/eng-2019-0073

Cited by 16 publications

(4 citation statements)

References 41 publications

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“…The method chosen to assess potential environmental impacts is EF 3.1, which provides results on 25 impact categories. The results are presented for the main categories, and there will be a particular focus on four of them; even in the field of additive manufacturing, different impact assessment methods and different categories are used, and by following what is reported in the literature, it was chosen to delve deeper into these categories: climate change, energy resources, acidification, and eutrophication [18,19].…”

Section: Resultsmentioning

confidence: 99%

Sustainability in Healthcare Sector: The Dental Aligners Case

Caelli,

Tamburrino,

Brondi

et al. 2023

Preprint

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The study conducts a comparative life cycle assessment (LCA) analysis to assess the environmental impact of two different manufacturing processes used to produce transparent dental aligners. The former method consists of thermoforming a polymeric disc over 3D printed, customized models, while the second, more innovative approach involves the direct printing of aligners using additive manufacturing (AM), specifically applying digital light processing (DLP) technology. The analysis results highlight how adopting direct printing through AM brings significant advantages in terms of environmental sustainability, thanks to the substantial reduction in raw materials and electricity consumption. These drops translate into decreased potential environmental impacts across all impact categories considered within the EF 3.1 method. Furthermore, lowering the amount of raw materials needed in the direct printing process contributes to a notable decrease in the overall volume of waste generated, emphasising the environmental benefits of this innovative technique.

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Section: Resultsmentioning

confidence: 99%

Sustainability in Healthcare Sector: The Dental Aligners Case

Caelli,

Tamburrino,

Brondi

et al. 2023

Preprint

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show abstract

“…In this stage, the "cradle-to-grave" is modelled [21] by incorporating the following steps: plotting a flowchart of the product system, gathering data, and computing an ecovector for the product as a result of an inventory analysis. The ecovector is a collection of information that shows the intensity of the product system's use of the raw material resources as well as the amount of various substance emissions into the environment [22]. An environmental profile is a set of data that is used to compute the environmental impacts that are represented as numerical values, or the outcomes of impact category indicators.…”

Section: Life Cycle Assessmentmentioning

confidence: 99%

“…The literature on sustainability analysis for AM processes is extensive [7,12,13,17,22,25,26,28,34,35]. The following methods should be used to assess the viability of AM approaches:…”

Section: Predicting Sustainability Before Printingmentioning

confidence: 99%

Sustainable Powder-Based Additive Manufacturing Technology

Eskandari Sabzi,

Rivera-Díaz-del-Castillo

2023

Sustainability

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A thorough exploration of sustainability in powder-based additive manufacturing (AM) is presented. This review focuses particularly on the design of sustainable alloys for AM. Environmental, economic, and social aspects of sustainability are covered. The importance of life cycle assessment (LCA) in evaluating environmental impact is discussed. LCA tools are used to analyse factors such as energy consumption, waste management, and air pollution, providing a comprehensive view of AM’s environmental footprint. Additionally, the economic dimension of sustainability is addressed through life cycle costing analysis. Production costs, energy use, and waste management are scrutinised, showcasing AM’s potential cost savings. Social life cycle assessment is introduced to assess societal impacts, focusing on worker welfare, community engagement, and overall societal well-being. A forward-looking concept of predicting sustainability before printing, using a product sustainability index, is presented. The approach emphasises environmentally responsible material selection, considering factors such as global warming potential in alloy design. This study offers a holistic approach to designing sustainable alloys and optimising AM processes through a sustainable materials science paradigm to establish the relationship amongst processing, microstructure, properties, sustainability, and performance.

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“…The sustainability paradigm is now widespread in any technological sector [8,11,21,22]. In the literature, various methods and approaches have been considered to be suitable for assessing the sustainability of AM processes.…”

Section: Sustainability Assessment Of Additive Manufacturing Technologymentioning

confidence: 99%

A monitoring framework based on exergetic analysis for sustainability assessment of direct laser metal deposition process

Selicati

Mazzarisi

Lovecchio

et al. 2021

Int J Adv Manuf Technol

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With the constant increase of energy costs and environmental impacts, improving the process efficiency is considered a priority issue for the manufacturing field. A wide knowledge about materials, energy, machinery, and auxiliary equipment is required in order to optimize the overall performance of manufacturing processes. Sustainability needs to be assessed in order to find an optimal compromise between technical quality of products and environmental compatibility of processes. In this new Industry 4.0 era, innovative manufacturing technologies, as the additive manufacturing, are taking a predominant role. The aim of this work is to give an insight into how thermodynamic laws contribute at the same time to improve energy efficiency of manufacturing resources and to provide a methodological support to move towards a smart and sustainable additive process. In this context, a fundamental step is the proper design of a sensing and real-time monitoring framework of an additive manufacturing process. This framework should be based on an accurate modelling of the physical phenomena and technological aspects of the considered process, taking into account all the sustainability requirements. To this end, a thermodynamic model for the direct laser metal deposition (DLMD) process was proposed as a test case. Finally, an exergetic analysis was conducted on a prototype DLMD system to validate the effectiveness of an ad-hoc monitoring system and highlight the limitations of this process. What emerged is that the proposed framework provided significant advantages, since it represents a valuable approach for finding suitable process management strategies to identify sustainable solutions for innovative manufacturing procedures.

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Current options in the life cycle assessment of additive manufacturing products

Cited by 16 publications

References 41 publications

Sustainability in Healthcare Sector: The Dental Aligners Case

Sustainability in Healthcare Sector: The Dental Aligners Case

Sustainable Powder-Based Additive Manufacturing Technology

A monitoring framework based on exergetic analysis for sustainability assessment of direct laser metal deposition process

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