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Prof. Paulo Peças
IDMEC, Instituto Superior Técnico, Universidade de Lisboa, Portugal

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Research Keywords & Expertise

0 Lean Applications
0 Lean Manufacturing
0 Lean Thinking
0 Life Cycle Planning
0 Sustainability

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Sustainability
Life Cycle Engineering
life cycle assessment (LCA)
Lean Manufacturing
Lean Thinking

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Short Biography

Paulo Peças has a Graduate Degree (1991) and a Doctorate Degree (2004) in Mechanical Engineering from Instituto Superior Técnico (Universidade de Lisboa). He is Associate Professor at Instituto Superior Técnico in the Manufacturing Technologies and Industrial Management scientific areas. Over the last ten years, he has participated in and integrated coordination teams for R&DT projects in collaboration with the industry, at both national and European levels. This research activity has focused on both the development integration of lean manufacturing and Industry 4.0 and on the development of the life cycle engineering framework: decision-making technological models, comparative analysis, and the best-practice implementation of an eco-efficiency and sustainability assessment.

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Journal article
Published: 20 August 2021 in Applied Sciences
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Continuous improvement (CI) is a key component of lean manufacturing (LM), which is fundamental for organizations to remain competitive in an ever more challenging market. At present, the new industrial revolution, Industry 4.0 (I4.0), is taking place in the manufacturing and service markets, allowing more intelligent and automated processes to become a reality through innovative technologies. Not much research was found regarding a holistic application of I4.0′s technological concepts towards CI, which clarifies the potential for improving its effectiveness. This clearly indicates that research is needed regarding this subject. The present publication intends to close this research gap by studying the main I4.0 technological concepts and their possible application towards a typical CI process, establishing the requirements for such an approach. Based on that study, a conceptual approach is proposed (PDCA 4.0), depicting how I4.0 technological concepts should be used for CI enhancement, while aiming to satisfy the identified requirements. By outlining the PDCA 4.0 approach, this paper contributes to increasing the knowledge available regarding the CI realm on how to support the CI shift towards a I4.0 industrial paradigm.

ACS Style

Paulo Peças; João Encarnação; Manuel Gambôa; Manuel Sampayo; Diogo Jorge. PDCA 4.0: A New Conceptual Approach for Continuous Improvement in the Industry 4.0 Paradigm. Applied Sciences 2021, 11, 7671 .

AMA Style

Paulo Peças, João Encarnação, Manuel Gambôa, Manuel Sampayo, Diogo Jorge. PDCA 4.0: A New Conceptual Approach for Continuous Improvement in the Industry 4.0 Paradigm. Applied Sciences. 2021; 11 (16):7671.

Chicago/Turabian Style

Paulo Peças; João Encarnação; Manuel Gambôa; Manuel Sampayo; Diogo Jorge. 2021. "PDCA 4.0: A New Conceptual Approach for Continuous Improvement in the Industry 4.0 Paradigm." Applied Sciences 11, no. 16: 7671.

Journal article
Published: 30 June 2021 in Applied Sciences
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Under the scenario of the fourth industrial revolution, the adoption of Industry 4.0 in the day-to-day business of small and medium enterprises (SME) entails expected challenges. Focusing primarily on more advanced levels of maturity, the existing maturity models are inadequate for assessing companies with low maturity levels, such as most of existing SMEs. A framework for a maturity model tailored to SMEs is proposed in this paper, allowing for a comprehensive and high granularity assessment of these companies’ maturity levels, which then eases their integration into this industrial revolution. The proposed holistic model considers all Industry 4.0 dimensions while being detailed enough in its initial levels to properly assess SMEs at the same time.

ACS Style

Afonso Amaral; Paulo Peças. A Framework for Assessing Manufacturing SMEs Industry 4.0 Maturity. Applied Sciences 2021, 11, 6127 .

AMA Style

Afonso Amaral, Paulo Peças. A Framework for Assessing Manufacturing SMEs Industry 4.0 Maturity. Applied Sciences. 2021; 11 (13):6127.

Chicago/Turabian Style

Afonso Amaral; Paulo Peças. 2021. "A Framework for Assessing Manufacturing SMEs Industry 4.0 Maturity." Applied Sciences 11, no. 13: 6127.

Research article
Published: 18 April 2021 in International Journal of Sustainable Engineering
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Environmental awareness of the effects of single-use plastic packaging and the shortage of non-renewable resources have encouraged the search for alternative materials. Most of single-use plastic packaging is in the food sector, including bags, straws, bottle lids, coffee stirrers, soda and water bottles. Biopolymers and biocomposites have a high potential to be eco-friendly, economic and technically competitive with fossil-based plastics and conventional composites. This paper presents a case study of life-cycle analysis supporting the design and development of a bottle lid as food packaging by applying a life-cycle engineering methodology to select a biocomposite material. Two current materials with high density polyethylene (HDPE) and polylactic acid (PLA) and 10 alternative biocomposite materials of hybrid matrix (mixtures of HDPE and PLA) and contents of banana fibre (BF) were evaluated. The analysis is performed by integrating of life cycle assessment, life cycle cost and technical analysis. The results show that the material with higher BF content is the best alternative both technically and environmentally, while the material with lower BF content is the best alternative economically. Therefore, the importance attributed to each dimension of analysis is pondered and traded-off to allow an aggregated analysis of the alternatives and a well-informed decision-making.

ACS Style

L. Joana Rodríguez; Sebastian Ospina; Inês Ribeiro; Paulo Peças; Carlos E. Orrego. Banana fibre-biocomposite applied to bottle lid case - life-cycle engineering model for material selection. International Journal of Sustainable Engineering 2021, 1 -12.

AMA Style

L. Joana Rodríguez, Sebastian Ospina, Inês Ribeiro, Paulo Peças, Carlos E. Orrego. Banana fibre-biocomposite applied to bottle lid case - life-cycle engineering model for material selection. International Journal of Sustainable Engineering. 2021; ():1-12.

Chicago/Turabian Style

L. Joana Rodríguez; Sebastian Ospina; Inês Ribeiro; Paulo Peças; Carlos E. Orrego. 2021. "Banana fibre-biocomposite applied to bottle lid case - life-cycle engineering model for material selection." International Journal of Sustainable Engineering , no. : 1-12.

Research article
Published: 18 January 2021 in International Journal of Computer Integrated Manufacturing
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One of the most promising areas for additive manufacturing (AM) adoption is in the healthcare industry, through its ability to produce customized medical devices with personalized fit, feel and functionality. The shift from conventional manufacturing systems to AM implies several changes throughout the medical product’s life cycle phases, from workforce qualification to the relationship with customers. This study investigates the social impact of adopting AM in the medical devices industry. To this end, two case studies related to medical devices were developed: a prosthesis and an orthosis, by applying a social life cycle assessment (S-LCA) methodology. The methodology measures and compares performance and impact of developing, producing, and using the two devices produced by AM, and by conventional processes. The results show how the different stakeholders along the product life cycle stages are affected by the change in the manufacturing technology. Evidence of positive social impacts were found in the ‘Customers’, ‘Local community’ and ‘Society’ stakeholders. A negative social impact was found for the stakeholder ‘Value chain actors’. Furthermore, this study illustrates the suitability of the S-LCA methodology to pinpoint the benefits and negative impacts of AM in each case under study.

ACS Style

Bruno Soares; Inês Ribeiro; Gonçalo Cardeal; Marco Leite; Helena Carvalho; Paulo Peças. Social life cycle performance of additive manufacturing in the healthcare industry: the orthosis and prosthesis cases. International Journal of Computer Integrated Manufacturing 2021, 34, 327 -340.

AMA Style

Bruno Soares, Inês Ribeiro, Gonçalo Cardeal, Marco Leite, Helena Carvalho, Paulo Peças. Social life cycle performance of additive manufacturing in the healthcare industry: the orthosis and prosthesis cases. International Journal of Computer Integrated Manufacturing. 2021; 34 (3):327-340.

Chicago/Turabian Style

Bruno Soares; Inês Ribeiro; Gonçalo Cardeal; Marco Leite; Helena Carvalho; Paulo Peças. 2021. "Social life cycle performance of additive manufacturing in the healthcare industry: the orthosis and prosthesis cases." International Journal of Computer Integrated Manufacturing 34, no. 3: 327-340.

Journal article
Published: 08 December 2020 in Computers in Industry
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SMEs are seen to have a hard time integrating the fourth industrial revolution. The purpose of our investigation is to grasp the impact that SMEs inherent limitations have on their integration in Industry 4.0. For this, we performed a 3 months full immersion investigation in a traditional manufacturing SME to assess such limitations (which are accountable for engendering obstacles). We present two digitalization propositions to showcase how simple digitalisation might set a company on the right track towards Industry 4.0. Both case studies display paths to increase the level of digitalization of an enterprise as it is a basic requirement for companies to enter this industrial revolution. Following this research’s methodology will allow companies to be more aware of their current state of Industry 4.0 maturity and carve their way into this fourth industrial revolution.

ACS Style

Afonso Amaral; Paulo Peças. SMEs and Industry 4.0: Two case studies of digitalization for a smoother integration. Computers in Industry 2020, 125, 103333 .

AMA Style

Afonso Amaral, Paulo Peças. SMEs and Industry 4.0: Two case studies of digitalization for a smoother integration. Computers in Industry. 2020; 125 ():103333.

Chicago/Turabian Style

Afonso Amaral; Paulo Peças. 2020. "SMEs and Industry 4.0: Two case studies of digitalization for a smoother integration." Computers in Industry 125, no. : 103333.

Book chapter
Published: 09 October 2020 in Advances in Mathematics for Industry 4.0
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In the past few decades, a generalized awareness and concern for sustainability issues has been gaining increasing relevance. Resources mapping (as well as time and cost) is an important task for decision-making toward sustainable production, and the multilayer stream mapping (MSM) method is an excellent approach to achieve it. Nevertheless, there are two potential barriers to the implementing MSM: (1) a constant feed of raw data from processes and production is required; and (2) the difficulty in decision-making based on the information supplied by MSM (with dozens of performance ratios per board). In this chapter a path is presented to overcome these two barriers. First, by proposing the link of MSM to an existing Internet-of-Things platform, taking advantage of the digitalization advent brought about by the Industry 4.0 revolution. Second, by proposing an optimization algorithm (integrated with discrete event simulation) that supports and facilitates the decision-making based on MSM. In addition to describing the proposed optimization approach, an application case study based on real industrial data from a company is presented and discussed.

ACS Style

Paulo Peças; Beatriz Gonçalves; Bruno Rocha; Diogo Jorge; António Baptista. Optimization techniques to support decision-making processes via MSM—an Industry 4.0 approach. Advances in Mathematics for Industry 4.0 2020, 23 -60.

AMA Style

Paulo Peças, Beatriz Gonçalves, Bruno Rocha, Diogo Jorge, António Baptista. Optimization techniques to support decision-making processes via MSM—an Industry 4.0 approach. Advances in Mathematics for Industry 4.0. 2020; ():23-60.

Chicago/Turabian Style

Paulo Peças; Beatriz Gonçalves; Bruno Rocha; Diogo Jorge; António Baptista. 2020. "Optimization techniques to support decision-making processes via MSM—an Industry 4.0 approach." Advances in Mathematics for Industry 4.0 , no. : 23-60.

Journal article
Published: 30 August 2020 in Sustainability
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Additive manufacturing has the potential to make a longstanding impact on the manufacturing world and is a core element of the Fourth Industrial Revolution. Additive manufacturing signifies a new disruptive path on how we will produce parts and products. Several studies suggest this technology could foster sustainability into manufacturing systems based on its potential of optimizing material consumption, creating new shapes, customizing designs and shortening production times that, all combined, will greatly transform some of the existing business models. Although it requires reaching a certain level of design maturity to completely insert this technology in an industrial setting, additive manufacturing has the potential to favorably impact the manufacturing sector by reducing costs in production, logistics, inventories, and in the development and industrialization of a new product. The transformation of the industry and the acceleration of the adopting rate of new technologies is driving organizational strategy. Thus, through the lenses of Industry 4.0 and its technological concepts, this paper aims to contribute to the knowledge about the impacts of additive manufacturing technology on sustainable business models. This aim is accomplished through a proposed framework, as well as the models and scales that can be used to determine these impacts. The effects are assessed by taking into account the social, environmental and economic impacts of additive manufacturing on business models and for all these three dimensions a balanced scorecard structure is proposed.

ACS Style

Radu Godina; Inês Ribeiro; Florinda Matos; Bruna T. Ferreira; Helena Carvalho; Paulo Peças. Impact Assessment of Additive Manufacturing on Sustainable Business Models in Industry 4.0 Context. Sustainability 2020, 12, 7066 .

AMA Style

Radu Godina, Inês Ribeiro, Florinda Matos, Bruna T. Ferreira, Helena Carvalho, Paulo Peças. Impact Assessment of Additive Manufacturing on Sustainable Business Models in Industry 4.0 Context. Sustainability. 2020; 12 (17):7066.

Chicago/Turabian Style

Radu Godina; Inês Ribeiro; Florinda Matos; Bruna T. Ferreira; Helena Carvalho; Paulo Peças. 2020. "Impact Assessment of Additive Manufacturing on Sustainable Business Models in Industry 4.0 Context." Sustainability 12, no. 17: 7066.

Conference paper
Published: 05 May 2020 in Proceedings of International Conference on Big Data, Machine Learning and Applications
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Lean Manufacturing is based on continuous improvement, aiming at optimizing the production system, eliminating waste and minimizing resources use. In this study, an in-depth analysis regarding the Lean performance evaluation methods present in the literature, as well as already implemented in the industry, is performed, focusing on the gaps of current models and needs for future ones. This paper proposes a method for Lean performance evaluation, following the robust theoretical approaches of existent assessment methods and keeping simplicity of application. The proposed method is divided into two distinct models: The Lean Assessment model and the Lean Maturity model. The Fuzzy logic is used in the models to attenuate the ambiguity and vagueness of the participants’ responses. The models’ validation was accomplished by comparing the method application in an industrial company with in loco Lean assessment.

ACS Style

Margarida Barros; Helena Cecílio; Diogo Jorge; Paulo Peças. Lean Performance Evaluation: Models and Application. Proceedings of International Conference on Big Data, Machine Learning and Applications 2020, 261 -271.

AMA Style

Margarida Barros, Helena Cecílio, Diogo Jorge, Paulo Peças. Lean Performance Evaluation: Models and Application. Proceedings of International Conference on Big Data, Machine Learning and Applications. 2020; ():261-271.

Chicago/Turabian Style

Margarida Barros; Helena Cecílio; Diogo Jorge; Paulo Peças. 2020. "Lean Performance Evaluation: Models and Application." Proceedings of International Conference on Big Data, Machine Learning and Applications , no. : 261-271.

Conference paper
Published: 05 May 2020 in Proceedings of International Conference on Big Data, Machine Learning and Applications
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Additive manufacturing (AM) is an emerging technology that is changing the supply chain’s structure in a context where consumers are looking for more diversified, customizable, and yet more environmentally friendly products and technologies. The literature suggests that AM technology improves the efficiency of a supply chain by contributing to waste reduction, elimination of many assembly steps, and less energy consumption, which in turn results in “leaner” and “greener” production processes. To further investigate such implications of AM technology, this study collects anecdotal evidence from research papers regarding the impact of AM on supporting four of the lean/green supply chain practices. As a result, a theoretical framework is developed; and in a final research stage, it is discussed in an interview with a company manager. This paper’s main contribution is to provide a theoretical and managerial perspective on how the AM technology can support lean/green supply chain practices helping to achieve a better supply chain performance.

ACS Style

Bruna Torres; Bardia Naghshineh; Gonçalo Cardeal; Duarte Filipe; Helena Carvalho; Paulo Peças; Inês Ribeiro. The Impacts of Additive Manufacturing Technology on Lean/Green Supply Chain Management Practices. Proceedings of International Conference on Big Data, Machine Learning and Applications 2020, 159 -168.

AMA Style

Bruna Torres, Bardia Naghshineh, Gonçalo Cardeal, Duarte Filipe, Helena Carvalho, Paulo Peças, Inês Ribeiro. The Impacts of Additive Manufacturing Technology on Lean/Green Supply Chain Management Practices. Proceedings of International Conference on Big Data, Machine Learning and Applications. 2020; ():159-168.

Chicago/Turabian Style

Bruna Torres; Bardia Naghshineh; Gonçalo Cardeal; Duarte Filipe; Helena Carvalho; Paulo Peças; Inês Ribeiro. 2020. "The Impacts of Additive Manufacturing Technology on Lean/Green Supply Chain Management Practices." Proceedings of International Conference on Big Data, Machine Learning and Applications , no. : 159-168.

Conference paper
Published: 05 May 2020 in Proceedings of International Conference on Big Data, Machine Learning and Applications
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The industrial sector is under an increasing pressure to achieve quality products with the lowest possible cost and environmental impacts, leading to the necessity of developing methods to support management decision. The Material Flow Cost Accounting (MFCA) and the Lean Management tools usually provide that support, separately. The MFCA assess the economic and environmental performance of the production system, evaluating the physical flows in monetary units, presenting the results in terms of costs of the product itself and the waste. The Lean philosophy analyses, mainly, the physical flows and physical waste. Lean methods/tools allow the diagnosis of different systems and uses problem solving strategies towards continuous improving. This paper present an approach combining both methods/tools, MFCA and Lean, supported by its application to a real case study. This approach allows a clear and quick identification of critical cost and energy related problems, allowing an early problem-solving phase.

ACS Style

Helena Cecílio; Paulo Peças; Inês Ribeiro; Diogo Jorge. Material Flow Cost Accounting as a Way to Apply Lean Manufacturing. Proceedings of International Conference on Big Data, Machine Learning and Applications 2020, 241 -249.

AMA Style

Helena Cecílio, Paulo Peças, Inês Ribeiro, Diogo Jorge. Material Flow Cost Accounting as a Way to Apply Lean Manufacturing. Proceedings of International Conference on Big Data, Machine Learning and Applications. 2020; ():241-249.

Chicago/Turabian Style

Helena Cecílio; Paulo Peças; Inês Ribeiro; Diogo Jorge. 2020. "Material Flow Cost Accounting as a Way to Apply Lean Manufacturing." Proceedings of International Conference on Big Data, Machine Learning and Applications , no. : 241-249.

Chapter
Published: 28 April 2020 in Advanced Structured Materials
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This chapter aims to present new design and modelling methods for hybrid additive manufacturing (AM) technologies with thermoplastic composites, regarding material processability, functional requirements and manufacturing specificities of additive, subtractive and hybrid operation modes. Multifunctional and graded features are presented since the potential of the design and modelling approaches is enhanced in the development of these innovative features. Moreover, a sustainability assessment in AM-related processes covering the product and process life cycle (LC) performance, economic, environmental and social assessments, as well as the main AM challenges and opportunities, will be in-depth discussed.

ACS Style

Carlos Vicente; Celeste Jacinto; Helena Carvalho; Inês Ribeiro; Luís Reis; Marco Leite; Paulo Peças; Relógio Ribeiro; Sílvia Esteves. Design and Modelling Approaches. Advanced Structured Materials 2020, 57 -91.

AMA Style

Carlos Vicente, Celeste Jacinto, Helena Carvalho, Inês Ribeiro, Luís Reis, Marco Leite, Paulo Peças, Relógio Ribeiro, Sílvia Esteves. Design and Modelling Approaches. Advanced Structured Materials. 2020; ():57-91.

Chicago/Turabian Style

Carlos Vicente; Celeste Jacinto; Helena Carvalho; Inês Ribeiro; Luís Reis; Marco Leite; Paulo Peças; Relógio Ribeiro; Sílvia Esteves. 2020. "Design and Modelling Approaches." Advanced Structured Materials , no. : 57-91.

Chapter
Published: 28 April 2020 in Advanced Structured Materials
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This chapter is devoted to the study of the key principles of AM value chain, including materials (in particular fibre-reinforced thermoplastics—FRTP), pre-processing, process and control aspects, design features, quality and robustness issues, applications and sustainability concerns. It will label the technological challenges involved and outline the potential of applicability of a roadmap. After starting with materials, processes and applications mapping, we will address new strategies for AM FRTP parts performance improvement. Then, FRTP parts certification and quality assurance will be discussed and a LCA/LCC analysis of composite materials is presented. Finally, a AM and composites research roadmap is proposed.

ACS Style

Isaac Ferreira; Margarida Machado; Elsa Henriques; Marco Leite; Paulo Peças; António Torres Marques. State-of-the-Art Review and Roadmap. Advanced Structured Materials 2020, 1 -56.

AMA Style

Isaac Ferreira, Margarida Machado, Elsa Henriques, Marco Leite, Paulo Peças, António Torres Marques. State-of-the-Art Review and Roadmap. Advanced Structured Materials. 2020; ():1-56.

Chicago/Turabian Style

Isaac Ferreira; Margarida Machado; Elsa Henriques; Marco Leite; Paulo Peças; António Torres Marques. 2020. "State-of-the-Art Review and Roadmap." Advanced Structured Materials , no. : 1-56.

Review
Published: 29 February 2020 in Journal of Environmental Management
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Sustainability of products and services has become a compulsory requirement and an essential requirement for organizations, governments, markets and society in general. Among the various ways of measuring sustainability that have been developed, those based on life cycle thinking provide one of the frameworks for assessing the potential impacts of products and services. However, despite sustainability of triple bottom line parameters (ecological, financial and social), the life cycle assessment is the most mature and prominent available tool. In addition, integration methodologies have come up, like life cycle sustainability assessment (integrating the three sustainability dimensions) and life cycle engineering (including the technical or functional aspect). The application of these methodologies to emergent materials and technologies represents a huge challenge, because there is lack of proper indicators, lack of information and contradictory information is common. This is the case of biocomposites, built with nature-based materials harvested in a myriad of ways in several regions of the globe. So, this paper presents a systematic literature review about the research done on the realm of sustainability assessment methods application to biocomposites. It reveals knowledge and information gaps to apply these methodologies. The integration of the existing methodologies is proposed as a way to allow a holistic sustainability assessment of biocomposite materials.

ACS Style

L. Joana Rodriguez; Paulo Peças; Vitor Hugo Caetano de Carvalho; Carlos E. Orrego. A literature review on life cycle tools fostering holistic sustainability assessment: An application in biocomposite materials. Journal of Environmental Management 2020, 262, 110308 .

AMA Style

L. Joana Rodriguez, Paulo Peças, Vitor Hugo Caetano de Carvalho, Carlos E. Orrego. A literature review on life cycle tools fostering holistic sustainability assessment: An application in biocomposite materials. Journal of Environmental Management. 2020; 262 ():110308.

Chicago/Turabian Style

L. Joana Rodriguez; Paulo Peças; Vitor Hugo Caetano de Carvalho; Carlos E. Orrego. 2020. "A literature review on life cycle tools fostering holistic sustainability assessment: An application in biocomposite materials." Journal of Environmental Management 262, no. : 110308.

Journal article
Published: 27 January 2020 in Sustainability
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Additive manufacturing (AM) is a group of technologies that create objects by adding material layer upon layer, in precise geometric shapes. They are amongst the most disruptive technologies nowadays, potentially changing value chains from the design process to the end-of-life, providing significant advantages over traditional manufacturing processes in terms of flexibility in design and production and waste minimization. Nevertheless, sustainability assessment should also be included in the research agenda as these technologies affect the People, the Planet and the Profit: the three-bottom line (3BL) assessment framework. Moreover, AM sustainability depends on each product and context that strengthens the need for its assessment through the 3BL framework. This paper explores the literature on AM sustainability, and the results are mapped in a framework aiming to support comprehensive assessments of the AM impacts in the 3BL dimensions by companies and researchers. To sustain the coherence of boundaries, three life cycle methods are proposed, each one for a specific dimension of the 3BL analysis, and two illustrative case studies are shown to exemplify the model.

ACS Style

Inês Ribeiro; Florinda Matos; Celeste Jacinto; Hafiz Salman; Gonçalo Cardeal; Helena Carvalho; Radu Godina; Paulo Peças. Framework for Life Cycle Sustainability Assessment of Additive Manufacturing. Sustainability 2020, 12, 929 .

AMA Style

Inês Ribeiro, Florinda Matos, Celeste Jacinto, Hafiz Salman, Gonçalo Cardeal, Helena Carvalho, Radu Godina, Paulo Peças. Framework for Life Cycle Sustainability Assessment of Additive Manufacturing. Sustainability. 2020; 12 (3):929.

Chicago/Turabian Style

Inês Ribeiro; Florinda Matos; Celeste Jacinto; Hafiz Salman; Gonçalo Cardeal; Helena Carvalho; Radu Godina; Paulo Peças. 2020. "Framework for Life Cycle Sustainability Assessment of Additive Manufacturing." Sustainability 12, no. 3: 929.

Journal article
Published: 29 November 2019 in Journal of Cleaner Production
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The aeronautic industry is facing increasing pressure to design more efficient and sustainable aircraft to mitigate their impact on the environment. These solutions are mainly focused on: aerodynamics, structures/materials, propulsion and operations. This paper focuses on the potential of electric propulsion systems in different aircraft segments for reducing the environmental impact in the aircraft life cycle. With a twofold contribution and linking different areas, this study presents a methodological proposal for the environmental assessment of the propulsion system change in a consequential Life Cycle Assessment perspective. This methodology uses data from both a modified conceptual aircraft design adapted to hybrid-electric aircraft and a battery study. Results show not only the environmental impacts of the required battery systems for each aircraft segment in a life cycle perspective, but also in what contexts the hybrid-electric propulsion may be considered a best alternative environmentally when compared with fuel propulsion systems. For that, a sensitivity analysis illustrate the results for different electricity mix contexts and for different battery cell capacities. The main contribution for the overall life cycle impact is the process of charging a battery system, therefore the source of electricity generation is crucial for the environmental sustainability of a hybrid-electric aircraft.

ACS Style

João Ribeiro; Frederico Afonso; Inês Ribeiro; Bruna Ferreira; Hugo Policarpo; Paulo Peças; Fernando Lau. Environmental assessment of hybrid-electric propulsion in conceptual aircraft design. Journal of Cleaner Production 2019, 247, 119477 .

AMA Style

João Ribeiro, Frederico Afonso, Inês Ribeiro, Bruna Ferreira, Hugo Policarpo, Paulo Peças, Fernando Lau. Environmental assessment of hybrid-electric propulsion in conceptual aircraft design. Journal of Cleaner Production. 2019; 247 ():119477.

Chicago/Turabian Style

João Ribeiro; Frederico Afonso; Inês Ribeiro; Bruna Ferreira; Hugo Policarpo; Paulo Peças; Fernando Lau. 2019. "Environmental assessment of hybrid-electric propulsion in conceptual aircraft design." Journal of Cleaner Production 247, no. : 119477.

Journal article
Published: 01 November 2019 in International Journal of Mathematical, Engineering and Management Sciences
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Assembly cells often depend on the human elements when an extended automation is not (economically, even if technologically) possible. The workers’ natural variability is impossible to avoid in a manual assembly system. Usually when simulating an assembly system, a given task time distribution is assumed as the representation of the workers time performance. Workers have variations in their performance that can incur in the shifting of this distribution relative to the expected performance time distribution, as well as in the widening of this distribution, by the increase or decrease of dispersion. This paper presents a discrete event simulation model of an assembly system where the operators have different time distributions, aiming to assess their influence in the overall system performance. Those time distributions were obtained in industrial context, in a previous study, by observing workers in an assembly cell, so representing real performance of workers. The results indicate that the worst performing worker will “pace” the output system performance to a slower rhythm, while better performances of a single worker will only increase very slightly the system productivity.

ACS Style

Paulo Peças; João Semeano. Industrial-Based Time Performance of Assembly Cell Operators: Impact Assessment Characterization by Discrete-Event Simulation. International Journal of Mathematical, Engineering and Management Sciences 2019, 5, 29 -44.

AMA Style

Paulo Peças, João Semeano. Industrial-Based Time Performance of Assembly Cell Operators: Impact Assessment Characterization by Discrete-Event Simulation. International Journal of Mathematical, Engineering and Management Sciences. 2019; 5 (1):29-44.

Chicago/Turabian Style

Paulo Peças; João Semeano. 2019. "Industrial-Based Time Performance of Assembly Cell Operators: Impact Assessment Characterization by Discrete-Event Simulation." International Journal of Mathematical, Engineering and Management Sciences 5, no. 1: 29-44.

Journal article
Published: 10 July 2019 in Sustainability
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Despite the myriad of possibilities and applications of additive manufacturing (AM) technology, knowledge about the social impacts of this technology is very scarce and very limited in some areas. This paper explores how factors generated by the development of AM technology may create social impacts, affecting the health and social well-being of people, quality of life, working conditions, and the creation of wealth. This paper presents the results of an exploratory multiple case study conducted among four Portuguese organizations that use AM technology, aiming to determine their perceptions regarding the social impacts of AM, its effects, and causes. The results confirm that AM technology is mainly seen to create positive impacts on health and safety (regarding physical hazards), on expectations for the future, on leisure and recreation, on low disruption with the local economy, on economic prosperity, on the professional status, and on innovative employment types. Nevertheless, a negative impact was also found on health and safety (concerning hazardous substances), as well as several mixed and null impacts. The main limitations of the research arise from the use of a case study methodology, since the results can be influenced by contextual factors, such as the size of the organizations in the sample, and/or social, cultural, technological, political, economic, and ecological factors. This study gives an up-to-date contribution to the topic of AM social impacts and social changes, an area which is still little-explored in the literature.

ACS Style

Florinda Matos; Radu Godina; Celeste Jacinto; Helena Carvalho; Inês Ribeiro; Paulo Peças. Additive Manufacturing: Exploring the Social Changes and Impacts. Sustainability 2019, 11, 3757 .

AMA Style

Florinda Matos, Radu Godina, Celeste Jacinto, Helena Carvalho, Inês Ribeiro, Paulo Peças. Additive Manufacturing: Exploring the Social Changes and Impacts. Sustainability. 2019; 11 (14):3757.

Chicago/Turabian Style

Florinda Matos; Radu Godina; Celeste Jacinto; Helena Carvalho; Inês Ribeiro; Paulo Peças. 2019. "Additive Manufacturing: Exploring the Social Changes and Impacts." Sustainability 11, no. 14: 3757.

Journal article
Published: 29 May 2019 in Procedia Manufacturing
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Eco-efficiency is a prominent as well as promising approach for fostering sustainability by assessing the environmental impact and value of companies´ activities simultaneously. A lot of indicators to assess both pillars – environmental and economic effects – are presented in different standards and guidelines. These indicators primarily refer to the “overall” evaluation of eco-efficiency at a company level. However, the concept of eco-efficiency seems to be fruitful for the sustainability-oriented analysis and design of single products and production processes as well. Since this task implies the need of other indicators, the paper presents a system of adequate technology, product and process-related indicators. A case study referring to moulds for injection moulding demonstrates the applicability and typical results of the suggested concept.

ACS Style

Uwe Götze; Paulo Peças; Fanny Richter. Design for eco-efficiency – a system of indicators and their application to the case of moulds for injection moulding. Procedia Manufacturing 2019, 33, 304 -311.

AMA Style

Uwe Götze, Paulo Peças, Fanny Richter. Design for eco-efficiency – a system of indicators and their application to the case of moulds for injection moulding. Procedia Manufacturing. 2019; 33 ():304-311.

Chicago/Turabian Style

Uwe Götze; Paulo Peças; Fanny Richter. 2019. "Design for eco-efficiency – a system of indicators and their application to the case of moulds for injection moulding." Procedia Manufacturing 33, no. : 304-311.

Journal article
Published: 01 January 2019 in Procedia Manufacturing
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The purpose of this paper is to examine the existing models in the literature and analyze whether they are suited for the SMEs’ needs, as well as to propose the development of a methodology for SMEs to successfully approach and implement Industry 4.0. It begins with an introduction to Industry 4.0 and its meaning, followed by what are maturity models and why are they important. A literature review of Industry 4.0 maturity and readiness models and an analysis of their suitability to SMEs are made. The steps required to build a methodology guide SMEs to approach Industry 4.0 and implement it, are proposed.

ACS Style

Afonso Amaral; Diogo Jorge; Paulo Peças. SMALL MEDIUM ENTERPRISES AND INDUSTRY 4.0: CURRENT MODELS’ INEPTITUDE AND THE PROPOSAL OF A METHODOLOGY TO SUCCESSFULLY IMPLEMENT INDUSTRY 4.0 IN SMALL MEDIUM ENTERPRISES. Procedia Manufacturing 2019, 41, 1103 -1110.

AMA Style

Afonso Amaral, Diogo Jorge, Paulo Peças. SMALL MEDIUM ENTERPRISES AND INDUSTRY 4.0: CURRENT MODELS’ INEPTITUDE AND THE PROPOSAL OF A METHODOLOGY TO SUCCESSFULLY IMPLEMENT INDUSTRY 4.0 IN SMALL MEDIUM ENTERPRISES. Procedia Manufacturing. 2019; 41 ():1103-1110.

Chicago/Turabian Style

Afonso Amaral; Diogo Jorge; Paulo Peças. 2019. "SMALL MEDIUM ENTERPRISES AND INDUSTRY 4.0: CURRENT MODELS’ INEPTITUDE AND THE PROPOSAL OF A METHODOLOGY TO SUCCESSFULLY IMPLEMENT INDUSTRY 4.0 IN SMALL MEDIUM ENTERPRISES." Procedia Manufacturing 41, no. : 1103-1110.

Chapter
Published: 01 January 2019 in Electric Vehicles and the Future of Energy Efficient Transportation
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Key performance indicators (KPIs) are a critical tool to support activities and results' monitoring in any industrial organization. The published literature and the available approaches on KPIs focus on the business and administrative level, being computed with information retrieved at the shop-floor level. Despite that, there is a scarcity of structured and comprehensive approaches to support the generation of KPIs to be used at the shop-floor level (the few existent approaches are empiric-based). In this chapter, a methodology to support the selection and organization of KPIs at the shop-floor level is proposed. Departing from the Hoshin Kanri strategy deployment, it identifies the levels of decision and control in the company regarding the production activities and derives the most adequate KPIs for each level based on universal questions about “what performance to assess.” The build-up of visual management boards for each level is also proposed.

ACS Style

Mariana Raposo Oliveira; Diogo Jorge; Paulo Peças. Methodology of Operationalization of KPIs for Shop-Floor. Electric Vehicles and the Future of Energy Efficient Transportation 2019, 163 -191.

AMA Style

Mariana Raposo Oliveira, Diogo Jorge, Paulo Peças. Methodology of Operationalization of KPIs for Shop-Floor. Electric Vehicles and the Future of Energy Efficient Transportation. 2019; ():163-191.

Chicago/Turabian Style

Mariana Raposo Oliveira; Diogo Jorge; Paulo Peças. 2019. "Methodology of Operationalization of KPIs for Shop-Floor." Electric Vehicles and the Future of Energy Efficient Transportation , no. : 163-191.