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Papers by Michele DASSISTI

Journal of Energy Storage

Encyclopedia of Smart Materials, 2022

Computers in Industry, 2021

Abstract Manufacturing enterprises are facing the need to align themselves to the new information... more Abstract Manufacturing enterprises are facing the need to align themselves to the new information technologies (IT) and respond to the new challenges of variable market demand. One of the key enablers of this IT revolution toward Smart Manufacturing is the digital twin (DT). It embeds a “virtual” image of the reality constantly synchronized with the real operating scenario to provide sound information (knowledge model) to reality interpretation model to draw sound decisions. The paper aims at providing an up-to date picture of the main DT components, their features and interaction problems. The paper aims at clearly tracing the ongoing research and technical challenges in conceiving and building DTs as well, according to different application domains and related technologies. To this purpose, the main questions answered here are: ‘What is a Digital Twin?’; ‘Where is appropriate to use a Digital Twin?’; ‘When has a Digital Twin to be developed?’; ‘Why should a Digital Twin be used?’; ‘How to design and implement a Digital Twin?’; ‘What are the main challenges of implementing a Digital Twin?’. This study tries to answer to the previous questions funding on a wide systematic literature review of scientific research, tools, and technicalities in different application domains.

Reference Module in Materials Science and Materials Engineering, 2016

The reliance upon fossil fuels is one of the most important problems that we have to deal with no... more The reliance upon fossil fuels is one of the most important problems that we have to deal with nowadays, because using them is highly not sustainable, and leads to serious environmental issues, such as air pollution and global warming, beside its negative effect on the economic security and development. Alternatively, environmental-friendly, sustainable, efficient new power sources are needed. Among all of the different technologies associated with the renewable energy, fuel cell technologies represent one of the most promising ones. In this article, an overview of the technology and its advantages and disadvantages compared with competitive technologies was revealed. Application of different types of fuel cells is covered in the stationary, portable and transport power sectors. Furthermore, a special focus was made on the proton exchange membrane (PEM) fuel cells; in that its structure was studied in detail. The current limitation and promising development in PEM technology were stated.

INSIGHT

ABSTRACTModelling Cyber‐physical systems is quite complex and thus needs a big amount of data and... more ABSTRACTModelling Cyber‐physical systems is quite complex and thus needs a big amount of data and modelling techniques representing the operational semantics of the modelled elements. Generally, the modelling action has a specific application type. For this reason, the paper proposes a series of modelling patterns aimed at automatically identifying invariant behaviors in the masses of data that can be modelled to emulate cyber‐physical systems and thus contribute to the digital transformation of industrial production companies.

2017 IEEE International Conference on Service Operations and Logistics, and Informatics (SOLI)

Optimisation problem concerning material flows, to increase the efficiency while reducing relativ... more Optimisation problem concerning material flows, to increase the efficiency while reducing relative resource consumption is one of the most pressing problems today. The focus point of this study is to propose a new visual benchmarking approach to select the best material-flow path from the depot to the production lines, referring to the well-known Capacitated Vehicle Routing Problem (CVRP). An example industrial case study is considered to this aim. Two different solution techniques were adopted (namely Mixed Integer Linear Programming and the Ant Colony Optimization) in searching optimal solutions to the CVRP. The visual benchmarking proposed, based on the persistent homology approach, allowed to support the comparison of the optimal solutions based on the entropy of the output in different scenarios. Finally, based on the non-standard measurements of Crossing Length Percentage (CLP), the visual benchmarking procedure makes it possible to find the most practical and applicable solution to CVRP by considering the visual attractiveness and the quality of the routes.

IFAC-PapersOnLine, 2018

Six sigma is a well-assessed methodology for optimizing the performance of the enterprise through... more Six sigma is a well-assessed methodology for optimizing the performance of the enterprise through the reduction of the variability of their process outputs. Six sigma implementation consists of the development of the DMAIC phases to improve existent processes. Each phase of this methodology adopts statistical as well as qualitative tools to fix variability sources and assess the process to a six sigma level of quality. However, there is a lack of an implementation model on how to guide effectively the implementation of the methodology DMAIC. This is particularly true for SMEs that not have enough human resources for supporting the needed knowledge. To answer to this limitation of six sigma, the objective of this paper is to present a framework to support the implementation of six sigma approach in SMEs. This framework is formalized by a meta-model, which is based on different studies on six sigma, its phases and its tools. This framework aims to propose a solution to validate the passage between the DMAIC phases defining the requirements to be satisfied during each phase.

International Journal of Production Research, 2018

Manufacturing organisations are facing the urge to adopt new strategies like sustainability to be... more Manufacturing organisations are facing the urge to adopt new strategies like sustainability to be able to respond to the market and customer's demand for sustainable products due to the scarcity of the natural resources or government policies. To serve this purpose, the main questions risen are 'How sustainability is defined through its dimensions?' and 'what subdimensions can denominate sustainable manufacturing?' Focusing on the questions, this study is cantered by a systematic literature review based on sustainability, its dimensions and sub-dimensions to investigate sustainability in manufacturing and the domains on which manufacturers can act on to be more 'sustainable'. Although the literature is more focused on the three traditional dimensions of sustainability namely: environmental, economic and social, a more detailed look through the dimensions is needed to help manufacturing organisations sketch their own sustainable strategies on more specific issues. The study of the dimensions led to a hierarchy of importance for the traditional three, in which environmental dimension of sustainability showed to be conspicuous. Therefore, the dimension was chosen for the further analysis conducted by Formal Concept Analysis (FCA) on its sub-dimensions to explore the trends in their combination by manufacturers while trying to reach sustainability.

Procedia Engineering, 2017

An exhibition system is typically a physical open space made of several buildings devoted to perf... more An exhibition system is typically a physical open space made of several buildings devoted to performing demonstrations or social activities. Several examples of exhibition systems can be found word wide. The management of these spaces, even in presence of a limited number of activities, requires significant efforts: safety, welcome, merchandising, public services, etc. Nowadays, the new trend is to offer multiple, contemporary use of exhibition spaces, allowing exhibition events and regular social activities (commercial, cultural, etc.) to be dynamically intertwined, either to endeavor the huge economic investments behind infrastructures or to increase the attractiveness of the exhibition activities. This is the case of "Fiera del Levante", one of the oldest exhibitions located in a fascinating central area on the seaside of the city of Bari-Italy. Here, multiple social scopes, such as multi-exhibitions and contemporary social activities related to public offices, restaurants and entertainment, live together. This is an almost unique setting, which makes Fiera del Levante (FdL) a complex system and makes the management of the exhibition a challenging co-management task. The paper deals with the development and demonstration of a complex-system modeling framework for the decision support of the co-management of Fiera del Levante exhibition system, taking into account the interaction both physical aspects (building assets, infrastructure, equipment, fittings, …) and intangible aspects (permanent and temporary events, management and business activities, etc) and, of course, considering as a main input the needs of the different stakeholders involved.

Lecture Notes in Computer Science, 2012

2021 International Conference on Cyber-Physical Social Intelligence (ICCSI)

A Cyber-Physical-Social System (CPSS) is an emerging research trend that focuses on integrating t... more A Cyber-Physical-Social System (CPSS) is an emerging research trend that focuses on integrating the social dimension into Cyber-Physical System (CPS). The CPSS consists of social, physical, and cyberspaces. There is a lack of influential theories and design approaches to reach a unified structure of a CPSS. Furthermore, the impacts of a CPSS on the sustainability performance of systems and processes are still unexplored. The paper addresses this latter research issue by evaluating case studies on CPSSs discussed in the literature.

Journal of Energy Storage

Encyclopedia of Smart Materials, 2022

Computers in Industry, 2021

Reference Module in Materials Science and Materials Engineering, 2016

INSIGHT

2017 IEEE International Conference on Service Operations and Logistics, and Informatics (SOLI)

IFAC-PapersOnLine, 2018

International Journal of Production Research, 2018

Procedia Engineering, 2017

Lecture Notes in Computer Science, 2012

2021 International Conference on Cyber-Physical Social Intelligence (ICCSI)

— Optimisation problem concerning material flows, to increase the efficiency while reducing relat... more — Optimisation problem concerning material flows, to increase the efficiency while reducing relative resource consumption is one of the most pressing problems today. The focus point of this study is to propose a new visual benchmarking approach to select the best material-flow path from the depot to the production lines, referring to the well-known Capacitated Vehicle Routing Problem (CVRP). An example industrial case study is considered to this aim. Two different solution techniques were adopted (namely Mixed Integer Linear Programming and the Ant Colony Optimization) in searching optimal solutions to the CVRP. The visual benchmarking proposed, based on the persistent homology approach, allowed to support the comparison of the optimal solutions based on the entropy of the output in different scenarios. Finally, based on the non-standard measurements of Crossing Length Percentage (CLP), the visual benchmarking procedure makes it possible to find the most practical and applicable solution to CVRP by considering the visual attractiveness and the quality of the routes.

The increasing rate of production and diffusion of photo-voltaic (PV) technologies for industrial... more The increasing rate of production and diffusion of photo-voltaic (PV) technologies for industrial and domestic applications urges improvement of the sustainability of their demanufacuring processes in order to reduce the amount of electronic wastes. Sustainability of de-manufacturing processes concerns the reduction of energy consumption, the reduction of polluting substances as well as the reduction of the effort spent in recovery of the components. No optimal process exists so far, provided a number of different approaches have been devised (see e.g. [1–3]). A promising choice relies on the use of thermo-mechanical treatments for inducing a delamination process where interfacial bonding between layers are weakened and, finally, broken inducing separation of the layers [4]. In this view, in this paper we present a preliminary industrialization study, based on Finite Element (FE) Analysis, to prove the validity of the new sustainable demanufacturing process endeavouring the delamination process. The analysis is performed searching the optimal thermally induced cycles at cryogenic temperatures. We finally show that it is possible to induce the delamination according to specific operating temperatures.

An exhibition system is typically a physical open space made of several buildings devoted to perf... more An exhibition system is typically a physical open space made of several buildings devoted to performing demonstrations or social activities. Several examples of exhibition systems can be found word wide. The management of these spaces, even in presence of a limited number of activities, requires significant efforts: safety, welcome, merchandising, public services, etc. Nowadays, the new trend is to offer multiple, contemporary use of exhibition spaces, allowing exhibition events and regular social activities (commercial, cultural, etc.) to be dynamically intertwined, either to endeavor the huge economic investments behind infrastructures or to increase the attractiveness of the exhibition activities. This is the case of " Fiera del Levante " , one of the oldest exhibitions located in a fascinating central area on the seaside of the city of Bari-Italy. Here, multiple social scopes, such as multi-exhibitions and contemporary social activities related to public offices, restaurants and entertainment, live together. This is an almost unique setting, which makes Fiera del Levante (FdL) a complex system and makes the management of the exhibition a challenging co-management task. The paper deals with the development and demonstration of a complex-system modeling framework for the decision support of the co-management of Fiera del Levante exhibition system, taking into account the interaction both physical aspects (building assets, infrastructure, equipment, fittings, …) and intangible aspects (permanent and temporary events, management and business activities, etc) and, of course, considering as a main input the needs of the different stakeholders involved.

The development and implementation of the smart factory paradigm seems to be a must almost widesp... more The development and implementation of the smart factory paradigm seems to be a must almost widespread all over the Western manufacturing companies so far. This article explores the application of exergetic analysis models as a feasible approach to customize such an announced paradigm shift: the implementation criteria as well as the true expected benefits are, in fact, far to be clearly understood or even perceived. An Italian medium enterprise located in the south of Italy operating in the automotive sector is adopted as a test bench. The standard use of exergetic model was adopted to assess and improve the sustainability of the manufacturing processes performed by the company, namely: turning, milling, grinding, plating and dehydrogenation. This thermodynamic view of the processes, on the other hand, represented a guideline to design a smart factory solution, and thus to structure the critical variables and the paths to digitalize processes for the intelligent control of the core production processes.

The pervasive diffusion of Information and Communication technologies (ICT) and automation techno... more The pervasive diffusion of Information and Communication technologies (ICT) and automation technologies are the prerequisite for the preconized fourth industrial revolution: the Industry 4.0 (I4.0). Despite the economical efforts of several governments all over the world, still there are few companies, especially small and medium enterprises (SMEs), that adopt or intend to adopt in the near future I4.0 solutions. This work focus on key issues for implementing the I4.0 solutions in SMEs by using a specific case example as a test bench of an Italian small manufacturing company. Requirements and constraints derived from the field experience are generalised to provide a clear view of the profound potentialities and difficulties of the first industrial revolution announced instead of being historically recognised. A preliminary classification is then provided in view to start conceiving a library of Industry 4.0 formal patterns to identify the maturity of a SME for deploying Industry 4.0 concepts and technologies.