scholarly journals Early Stage Digital Twins for Early Stage Engineering Design

2019 ◽  
Vol 1 (1) ◽  
pp. 2557-2566 ◽  
Author(s):  
David Edward Jones ◽  
Chris Snider ◽  
Lee Kent ◽  
Ben Hicks
Keyword(s):  
Life Cycle ◽  
Product Life Cycle ◽  
Early Stage ◽  
Physical Models ◽  
The Other ◽  
Digital Twin ◽  
Digital Twins ◽  
Design Cycle ◽  
Revision Control ◽  
First Time

ABSTRACTWhile extensive modelling - both physical and virtual - is imperative to develop right-first-time products, the parallel use of virtual and physical models gives rise to two interrelated issues: the lack of revision control for physical prototypes; and the need for designers to manually inspect, measure, and interpret modifications to either virtual or physical models, for subsequent update of the other. The Digital Twin paradigm addresses similar problems later in the product life-cycle, and while these digital twins, or the “twinning” process, have shown significant value, there is little work to date on their implementation in the earlier design stages. With large prospective benefits in increased product understanding, performance, and reduced design cycle time and cost, this paper explores the concept of using the Digital Twin in early design, including an introduction to digital twinning, examination of opportunities for and challenges of their implementation, a presentation of the structure of Early Stage Twins, and evaluation via two implementation cases.

Digital Twins Concepts, Challenges, and Future Trends

2021 ◽  
pp. 48-60
Author(s):  
Amged Sayed A. Mahmoud ◽  
Ezz El-Din Hemdan
Keyword(s):  
Life Cycle ◽  
Product Life Cycle ◽  
Smart Cities ◽  
Sensor Technology ◽  
Smart Manufacturing ◽  
Future Trends ◽  
Functional Description ◽  
Digital Twin ◽  
Research Areas ◽  
Digital Twins

Digital twin has gained a great interest during the last few years from academia and industry because of the development in IT technology, communication field, and sensor technology. The general vision of the DT is to provide a detailed physical and functional description of a component, product, and systems. Nevertheless, the digital twin is a highly dynamic concept growing in complexity during the product life cycle, which leads to an enormous amount of data and information. Motivated by these, this chapter investigates the concepts and architecture of DT to cover its challenges and explore its applications in various fields such as smart cities, smart manufacturing and factories, and healthcare sectors. In the end, the challenges and research areas will be presented.

scholarly journals Sustainability Requirements of Digital Twin-Based Systems: A Meta Systematic Literature Review

2021 ◽  
Vol 11 (12) ◽  
pp. 5519
Author(s):  
Rui Carvalho ◽  
Alberto Rodrigues da Silva
Keyword(s):  
Life Cycle ◽  
Literature Review ◽  
Systematic Literature Review ◽  
Environmental Sustainability ◽  
Product Life Cycle ◽  
Data Communication ◽  
Three Dimensions ◽  
Digital Twin ◽  
The Subject ◽  
Reducing Costs

Sustainable development was defined by the UN in 1987 as development that meets the needs of the present without compromising the ability of future generations to meet their own needs, and this is a core concept in this paper. This work acknowledges the three dimensions of sustainability, i.e., economic, social, and environmental, but its focus is on this last one. A digital twin (DT) is frequently described as a physical entity with a virtual counterpart, and the data, connections between the two, implying the existence of connectors and blocks for efficient and effective data communication. This paper provides a meta systematic literature review (SLR) (i.e., an SLR of SLRs) regarding the sustainability requirements of DT-based systems. Numerous papers on the subject of DT were also selected because they cited the analyzed SLRs and were considered relevant to the purposes of this research. From the selection and analysis of 29 papers, several limitations and challenges were identified: the perceived benefits of DTs are not clearly understood; DTs across the product life cycle or the DT life cycle are not sufficiently studied; it is not clear how DTs can contribute to reducing costs or supporting decision-making; technical implementation of DTs must be improved and better integrated in the context of the IoT; the level of fidelity of DTs is not entirely evaluated in terms of their parameters, accuracy, and level of abstraction; and the ownership of data stored within DTs should be better understood. Furthermore, from our research, it was not possible to find a paper discussing DTs only in regard to environmental sustainability.

Exploring applicability, interoperability and integrability of Blockchain-based digital twins for asset life cycle management

2020 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Christopher Santi Götz ◽  
Patrik Karlsson ◽  
Ibrahim Yitmen
Keyword(s):  
Life Cycle ◽  
Management Practice ◽  
Life Cycle Management ◽  
Use Cases ◽  
Content Type ◽  
Digital Twin ◽  
Digital Twins ◽  
Current Asset ◽  
User Expectations ◽  
Technological Platform

PurposeThe blockchain-based digital twin has been recognized as a prominent technological ecosystem featuring synergies with both established and emergent information management practice. The purpose of this research is to explore the applicability, interoperability and integrability of a blockchain-based digital twin for asset life cycle management and develop a model of framework which positions the digital twin within a broader context of current management practice and technological availability.Design/methodology/approachA systematic literature review was performed to map use cases of digital twin, IoT, blockchain and smart contract technologies. Surveys of industry professionals and analyses were conducted focussing on the mapped use cases' life cycle–centric applicability, interoperability and integrability with current asset life cycle management practice, exploring decision support capabilities and industry insights. Lastly, a model of framework was developed based on the use case, interoperability and integrability findings.FindingsThe results support approaching digitization initiatives with blockchain-based digital twins and the positioning of the concept as both a strategic tool and a multifunctional on-field support application. Integrability enablers include progression towards BIM level 3, decentralized program hubs, modular cross-technological platform interfaces, as well as mergeable and scalable blockchains.Practical implicationsKnowledge of use cases help highlight the functionality of an integrated technological ecosystem and its connection to comprehensive sets of asset life cycle management aspects. Exploring integrability enablers contribute to the development of management practice and solution development as user expectations and technological prerequisites are interlinked.Originality/valueThe research explores asset life cycle management use cases, interoperability and integrability enablers of blockchain-based digital twins and positions the technological ecosystem within current practice and technological availability.

Digital Twins for Cities: A State of the Art Review

2020 ◽  
Vol 46 (4) ◽  
pp. 547-573
Author(s):  
Bernd Ketzler ◽  
Vasilis Naserentin ◽  
Fabio Latino ◽  
Christopher Zangelidis ◽  
Liane Thuvander ◽  
...  
Keyword(s):  
Grey Literature ◽  
Physical Models ◽  
Global Perspective ◽  
Sensor Data ◽  
Dominant Term ◽  
Civic Society ◽  
Digital Twin ◽  
3D City Model ◽  
Digital Twins ◽  
City Model

During the last decades, a variety of digital tools have been developed to support both the planning and management of cities, as well as the inclusion of civic society. Here, the concept of a Digital Twin – which is rapidly emerging throughout many disciplines due to advances in technology, computational capacities and availability of large amounts of data – plays an important role. In short, a digital twin is a living virtual model, a connected digital representation of a physical system and has been a central concept in the manufacturing industry for the past decades. In this article, we review the terminology of digital twins for cities and identify commonalities and relations to the more established term 3D city models. Our findings indicate an increasing use of the term digital twin in academic literature, both in general and in the context of cities and the built environment. We find that while there is as yet no consensus on the exact definition of what constitutes a digital twin, it is increasingly being used to describe something that is more than a 3D city model (including, e.g. semantic data, real-time sensor data, physical models, and simulations). At the same time, the term has not yet replaced the term 3D city model as the most dominant term in the 3D GIS domain. By looking at grey literature we discuss how digital twins for cities are implemented in practice and present examples of digital twins in a global perspective. Further, we discuss some of the application areas and potential challenges for future development and implementation of digital twins for cities. We conclude that there are significant opportunities for up-scaling digital twins, with the potential to bring benefits to the city and its citizens and clients.

scholarly journals End-game Strategies in the Swedish National Tabloid Industry

2008 ◽  
Vol 29 (2) ◽  
pp. 325-334 ◽  
Author(s):  
Karl Erik Gustafsson
Keyword(s):  
Life Cycle ◽  
Comparative Research ◽  
Product Life Cycle ◽  
Nordic Countries ◽  
The Other ◽  
Product Life ◽  
Exit Barriers ◽  
Internet Publishing ◽  
Market Leader ◽  
Rules Of The Game

Abstract Based on decades of comparative research on the national tabloid industry in the Nordic countries, a forecast is made, based on the product life cycle (PLC) theory, that the Swedish national tabloid industry will decline. As PLC theory is a blunt forecasting instrument, every precaution is taken; still a forecast is made that the No.2 tabloid will lose the present endgame to the market leader and disappear in 5-10 years time. End-game strategies as well as exit barriers are discussed in detail. The conclusions are valid for the national tabloid industries in the other Nordic countries following the same pattern of development. In passing, the question is raised of whether Internet publishing will change the rules of the game.

scholarly journals ARCHITECTURE OF THE INFORMATION SYSTEM FOR LIFE CYCLE MANAGEMENT OF DIGITAL TWIN FOR CONTINUOUS PROCESSES

2021 ◽  
pp. 98-104
Author(s):  
Dmitry Yu. Petrov ◽  
◽  
Keyword(s):  
Information System ◽  
Life Cycle ◽  
Continuous Production ◽  
Life Cycle Management ◽  
Automated Control ◽  
Continuous Processes ◽  
Digital Twin ◽  
Digital Twins ◽  
Relationship Of ◽  
The Relationship

The relationship of the Industry 4.0 concept with cyber-physical systems and digital twins is described. The analysis of the capabilities of modern information systems of discrete and continuous production for the creation of digital twins of production is presented. The stages of creating a digital twin of production are proposed, taking into account the requirements of standards for the development of automated control systems for continuous technological processes. Using the use case diagram, the functionality and requirements for the subsystems of the information system are determined. The architecture of the information system for managing the life cycle of a continuous technological process was developed.

Design Methodology for Modularity Based on Life Cycle Scenario

2009 ◽  
Vol 3 (1) ◽  
pp. 40-48 ◽  
Author(s):  
Shinichi Fukushige ◽  
◽  
Yoichiro Inoue ◽  
Keita Tonoike ◽  
Yasushi Umeda
Keyword(s):  
Life Cycle ◽  
Product Design ◽  
Product Life Cycle ◽  
Design Methodology ◽  
Early Stage ◽  
Product Architecture ◽  
Environmental Load ◽  
Modular Architecture ◽  
Life Cycle Design ◽  
Geometric Feasibility

Minimizing the environmental load and cost throughout the product life cycle requires appropriate life cycle design as well as product design. In life cycle design, we must determine the life cycle scenario at an early stage and design the product to realize this scenario. Modularity is a key to linking life cycle scenario to an appropriate product architecture because modular architecture increases performance in life cycle processes, such as disassembly, recycling, maintenance, reuse, and upgrading, by unifying components applicable to the same lifecycle scenario. We propose a method for determining modular structure based on life cycle scenario by evaluating the similarity among lifecycle-related components attributes. We also evaluate the modular structure's geometric feasibility using an index indicates rigidity and compactness of the modules.

Description of Oigolaimella attenuata n. sp. (Diplogastridae) associated with termites (Reticulitermes) and remarks on life cycle, giant spermatozoa, gut-inhabiting flagellates and other associates

Nematology ◽  
2008 ◽  
Vol 10 (4) ◽  
pp. 501-523 ◽  
Author(s):  
Alexander Fürst von Lieven ◽  
Walter Sudhaus
Keyword(s):  
New Species ◽  
Life Cycle ◽  
Nematode Species ◽  
The Other ◽  
New Combination ◽  
Lateral Field ◽  
Diagnostic Key ◽  
Giant Spermatozoa ◽  
First Time ◽  
A New Species

AbstractA new species of the diplogastrid genus Oigolaimella is described in colonies of termites belonging to the genus Reticulitermes from Corsica (France) and USA. Oigolaimella attenuata n. sp. males can be recognised by the conspicuous length of the ventral unkeeled part of the otherwise keeled gubernaculum and, in contrast to the other members of the genus, the fact that the lateral field of both adult stages is marked by a single line. A diagnostic key for the five species of Oigolaimella is presented. Life cycle and development, including spermiogenesis, sperm transfer, sperm competition and fertilisation are described in detail. Some interesting aberrations of the reproductive system are documented. The new species uses the preoral cavities of the termites for internal phoresis and is associated with non-pathogenic gut-inhabiting flagellates of the taxon Kinetoplastida. The heads of 76 of 117 examined termites were infested with dauer juveniles of O. attenuata n. sp. with an average of 6.4 nematodes per termite. Six additional nematode species were isolated from the bodies of the termites, particularly a species of Pristionchus and, for the first time, Halicephalobus sp., Mesorhabditis spiculigera and Rhabditella axei. Rhabpanus ossiculum was isolated from termite-inhabited wood from Corsica, the first such detection in Europe. In the course of our discussion of the literature on termite-associated nematodes, we propose the new combination Pristionchus formosianus (Poinar, Meikle & Mercadier, 2006) n. comb. (=Chroniodiplogaster formosiana).

scholarly journals From BIM to digital twins: a systematic review of the evolution of intelligent building representations in the AEC-FM industry

2021 ◽  
Vol 26 ◽  
pp. 58-83
Author(s):  
Min Deng ◽  
Carol C. Menassa ◽  
Vineet R. Kamat
Keyword(s):  
Systematic Review ◽  
Life Cycle ◽  
Built Environment ◽  
Construction Process ◽  
Environment Monitoring ◽  
Ongoing Research ◽  
Digital Twin ◽  
Current State ◽  
Digital Twins ◽  
Recent Emergence

The widespread adoption of Building Information Modeling (BIM) and the recent emergence of Internet of Things (IoT) applications offer several new insights and decision-making capabilities throughout the life cycle of the built environment. In recent years, the ability of real-time connectivity to online sensors deployed in an environment has led to the emergence of the concept of the Digital Twin of the built environment. Digital Twins aim to achieve synchronization of the real world with a virtual platform for seamless management and control of the construction process, facility management, environment monitoring, and other life cycle processes in the built environment. However, research in Digital Twins for the built environment is still in its nascent stages and there is a need to understand the advances in the underlying enabling technologies and establish a convergent context for ongoing and future research. This paper conducted a systematic review to identify the development of the emerging technologies facilitating the evolution of BIM to Digital Twins in built environment applications. A total of 100 related papers including 23 review papers were selected and reviewed. In order to systematically classify the reviewed studies, the authors developed a five-level ladder categorization system based on the building life cycle to reflect the current state-of-the-art in Digital Twin applications. In each level of this taxonomy, applications were further categorized based on their research domains (e.g., construction process, building energy performance, indoor environment monitoring). In addition, the current state-of-art in technologies enabling Digital Twins was also summarized from the reviewed literature. It was found that most of the prior studies conducted thus far have not fully exploited or realized the envisioned concept of the Digital Twin, and thus classify under the earlier ladder categories. Based on the analysis of the reviewed work and the trends in ongoing research, the authors propose a concept of an advanced Digital Twin for building management as a baseline for further studies.

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