Engine Fleet-Management: The Use of Digital Twins From a MRO Perspective

2017 ◽  
Author(s):  
Joern Kraft ◽  
Stefan Kuntzagk
Keyword(s):  
Multilevel Models ◽  
Operating Cost ◽  
Maintenance Cost ◽  
Fleet Management ◽  
Component Level ◽  
The Real ◽  
Digital Twin ◽  
Digital Twins ◽  
The Individual ◽  
Life Consumption

Engine operating cost is a major contributor to the direct operating cost of aircraft. Therefore, the minimization of engine operating cost per flight-hour is a key aspect for airlines to operate successfully under challenging market conditions. The interaction between maintenance cost, operating cost, asset value, lease and replacement cost describes the area of conflict in which engine fleets can be optimized. State-of-the-art fleet management is based on advanced diagnostic and prognostic methods on engine and component level to provide optimized long-term removal and work-scoping forecasts on fleet level based on the individual operation. The key element of these methods is a digital twin of the active engines consisting of multilevel models of the engine and its components. This digital twin can be used to support deterioration and failure analysis, predict life consumption of critical parts and relate the specific operation of a customer to the real and expected condition of the engines on-wing and at induction to the shop. The fleet management data is constantly updated based on operational data sent from the engines as well as line maintenance and shop data. The approach is illustrated along the real application on the CFM56-5C, a mature commercial two-spool high bypass engine installed on the Airbus A340-300. It can be shown, that the new methodology results in major improvements on the considered fleets.

scholarly journals Digital Twin: An Oracle for Efficient Crowdsourcing of Research & Technology Development through Blockchain

2021 ◽  
Author(s):  
Jens Ducrée
Keyword(s):  
Flow Control ◽  
Real World ◽  
Technology Development ◽  
Science Research ◽  
Common Goal ◽  
The Real ◽  
Digital Twin ◽  
Research Technology ◽  
Smart Contract ◽  
Digital Twins

Since its inception in the late 2000s, blockchain has emerged as a powerful tool for creating trust without intermediaries to incentivize global communities for working for a common goal, such as the improvement of its very ecosystem, its applications and community adoption. While first blockchains were mainly devised for confirming transactions of their innate cryptocurrencies like Bitcoin, smart-contract blockchains like Ethereum can interface with the real-world through so-called “oracles”, which feed trustful off-chain information. This paper introduces digital twins of physical objects and processes as computational oracles to effectively unleash the tremendous opportunity offered by blockchain to the realm of fundamental science, research and technology development (RTD). The crowdsourcing concept is illustrated with the example of centrifugal flow control in microfluidic “Lab-on-a-Disc” (LoaD) systems.

scholarly journals An architecture of an Intelligent Digital Twin in a Cyber-Physical Production System

2019 ◽  
Vol 67 (9) ◽  
pp. 762-782 ◽  
Author(s):  
Behrang Ashtari Talkhestani ◽  
Tobias Jung ◽  
Benjamin Lindemann ◽  
Nada Sahlab ◽  
Nasser Jazdi ◽  
...  
Keyword(s):  
Data Acquisition ◽  
Production Systems ◽  
Heterogeneous Data ◽  
Use Cases ◽  
Added Value ◽  
Automation System ◽  
The Real ◽  
Digital Twin ◽  
Digital Twins ◽  
Cyber Physical Production Systems

Abstract The role of a Digital Twin is increasingly discussed within the context of Cyber-Physical Production Systems. Accordingly, various architectures for the realization of Digital Twin use cases are conceptualized. There lacks, however, a clear, encompassing architecture covering necessary components of a Digital Twin to realize various use cases in an intelligent automation system. In this contribution, the added value of a Digital Twin in an intelligent automation system is highlighted and various existing definitions and architectures of the Digital Twin are discussed. Flowingly, an architecture for a Digital Twin and an architecture for an Intelligent Digital Twin and their required components are proposed, with which use cases such as plug and produce, self-x and predictive maintenance are enabled. In the opinion of the authors, a Digital Twin requires three main characteristics: synchronization with the real asset, active data acquisition from the real environment and the ability of simulation. In addition to all the characteristics of a Digital Twin, an Intelligent Digital Twin must also include the characteristics of Artificial Intelligence. The Intelligent Digital Twin can be used for the realization of the autonomous Cyber-Physical Production Systems. In order to realize the proposed architecture for a Digital Twin, several methods, namely the Anchor-Point-Method, a method for heterogeneous data acquisition and data integration as well as an agent-based method for the development of a co-simulation between Digital Twins were implemented and evaluated.

scholarly journals DIGITAL TWINS: COMBINED SURVEYING PRAXIS FOR MODELLING

2021 ◽  
Author(s):  
CECILIA MARIA BOLOGNESI ◽  
Martina Signorini
Keyword(s):  
Real Time ◽  
New Technologies ◽  
Significant Information ◽  
Existing Building ◽  
The Real ◽  
Digital Twin ◽  
Digital Twins ◽  
Time Component ◽  
Building Information ◽  
Physical Asset

While the construction sector embraces the digitalization, new technologies are spreading and are generating benefits. The need of creating a 3D model of the reality, in particular of the built asset, is not new. The Building Information Modelling, a process that gives a great contribution in improving project quality, reducing errors, avoiding uncertainties and enhancing collaboration, allows a virtual representation of the existing asset enriching its geometry with precious and significant information related to its properties. Despite BIM benefits, BIM models do not take into account the real-time component and do not report the real-time behaviour of the building. Digital twin, the virtual copy of an object, instead creates a real-time virtual twin of the physical asset considering this ingredient and reproducing how the building behaves. The paper starts right from the investigation of the Digital Twin concepts and its main features and proceeds with an analysis of several technologies and instruments exploited till now for the surveying and positioning of existing buildings. In addition, a new toolkit based on AR and coupled with sensors and visualisation tool developed by xxx, an ongoing H2020 project, is presented to show its main advantages when it comes to representing the virtual copy of an existing building.

scholarly journals DIGITAL TWINS AND THEIR APPLIANCE IN TRANSPORT ECONOMICS

2021 ◽  
Vol 12 (2) ◽  
pp. 127-137
Author(s):  
O. N. Rimskaya ◽  
I. V. Anokhov
Keyword(s):  
Division Of Labor ◽  
Point Of View ◽  
Real Economy ◽  
Information Economy ◽  
The Real ◽  
Digital Twin ◽  
Digital Twins ◽  
Transport Industry ◽  
Definition Of Information ◽  
The Impact

Today digitalization increasingly affects the economy, including the transport industry. The consequence of this is the emergence of digital twins that allow modeling and predicting the behavior of both individual processes and enterprises as a whole.The aim of the article is to investigate the process of digitalization in the transport industry. The theoretical basis of the article was the universal organizational science of A. Bogdanov.The article offers a definition of information, and its classification in relation to the economy at three levels: applied information (technological information), information about algorithms of the owners of factors production behavior (behavioral information) and information, with which the impact on the owners of production factors and the real economy in general (directive information). The totality of these levels of information from the macroeconomic point of view forms an information economy, and from the microeconomic point of view – a digital twin of a particular subject of the real economy.It is proved that the digital economy is a subsystem of the information economy, differs in a binary way of presenting information and is maximally oriented to the management of the real economy.Information precedes all activity, so the real economy is a product of the information economy. Consequently, the technological division of labor is based on a prior informational division of labor. This theoretically allows us to judge the adequacy of the digital twin through the analysis of individual technological levels of the transport enterprise. This hypothesis was applied to the analysis of the Russian railway transport, which gave reason to consider this approach promising for use at macro- and micro-levels both.

scholarly journals The Digital Double of a Teacher as a Tool for Managing the Process of Forming Individual Tasks for Students

2021 ◽  
pp. 49-55
Author(s):  
N.N. Gorlushkina ◽  
◽  
N.F. Nasyrov ◽  
O.A. Lipina ◽  
◽  
...  
Keyword(s):  
Previous Experience ◽  
Digital Twin ◽  
Individual Work ◽  
Training Materials ◽  
Digital Twins ◽  
The Individual ◽  
The Relationship

The article describes the issue of modeling the digital twin of a teacher in the context of the task of forming individual educational tasks for students. An approach is proposed that analyzes the patterns in the teacher's choice of the most priority topics and areas for each student based on the available data on his previous experience. The article deals with the search for patterns between the digital twins of teachers for the subsequent prediction of their choice of topics and sections of training materials for the individual work of students. As the basis for creating a dataset for the formation of digital twins of teachers, the methodology of decomposition of tasks by tags is used (tags are designation of typical tasks within the framework of tasks by students). The paper describes the relationship between the student's digital trace, the digital trace and the teacher's digital twin as a part of solving the problems of managing the process of forming individual tasks.

Assessing the Demand for Online Integration Platforms in the Real Estate Business

2020 ◽  
Vol 26 (1) ◽  
pp. 46-54
Author(s):  
N. S. Alekseeva ◽  
A. E. Druzhinin
Keyword(s):  
Real Estate ◽  
Real Estate Market ◽  
Passenger Transport ◽  
Integration Platform ◽  
Online Platform ◽  
The Real ◽  
The Real Estate ◽  
The Real Estate Market ◽  
Hospitality Sector ◽  
The Individual

Examination of the real estate market shows that implementing innovations in this field is a very difficult task. This prompts the question of the necessity of digitalizing the real estate business and of the demand for online integration platforms in this field.Aim. The presented study aims to assess the demand for online integration platforms in the real estate business.Tasks. The authors compare the online integration platforms in the real estate market with the online integration platforms in the hospitality sector and the individual passenger transport market in terms of the share of user profits that integrators receive for their services on the online platform; compare the share of user profits that integrators receive for their services on the online platform with the equivalent indicator in various other global economic activities; assess the value of the services provided by an online integration platform using the methodology proposed by G. G. Azgaldov and N. N. Karpova.Methods. The data were acquired from public Internet sources and personal interviews with the directors of companies that represent or employ the services of online integration platforms in St. Petersburg. The interviews and work with Internet sources were conducted in November 2019.Results. An integrator in the real estate market receives a share of profits of their service users that is comparable to that of the integrators in the hospitality sector and the individual passenger transport market. The share of profits of a Russian integrator in the real estate market is significantly higher than that in such industries as entertainment, fashion, or sports. The value of an online integration platform can be defined as highly valuable, since the expected value of this indicator is 1.5 times higher than the maximum table value.Conclusions. The performed analysis shows a high demand for online integration platforms in the real estate business. Market participants are willing to pay for the ability to use new digital technologies.

scholarly journals The Impacts in Real Estate of Landscape Values: Evidence from Tuscany (Italy)

2021 ◽  
Vol 13 (4) ◽  
pp. 2236
Author(s):  
Francesco Riccioli ◽  
Roberto Fratini ◽  
Fabio Boncinelli
Keyword(s):  
Real Estate ◽  
House Prices ◽  
Spatial Econometric ◽  
The Real ◽  
The Real Estate ◽  
Landscape Values ◽  
Individual Perception ◽  
Real Estate Prices ◽  
The Aesthetic ◽  
The Individual

Using spatial econometric techniques and local spatial statistics, this study explores the relationships between the real estate values in Tuscany with the individual perception of satisfaction by landscape types. The analysis includes the usual territorial variables such as proximity to urban centres and roads. The landscape values are measured through a sample of respondents who expressed their aesthetic-visual perceptions of different types of land use. Results from a multivariate local Geary highlight that house prices are not spatial independent and that between the variables included in the analysis there is mainly a positive correlation. Specifically, the findings demonstrate a significant spatial dependence in real estate prices. The aesthetic values influence the real estate price throughout more a spatial indirect effect rather than the direct effect. Practically, house prices in specific areas are more influenced by aspects such as proximity to essential services. The results seem to show to live close to highly aesthetic environments not in these environments. The results relating to the distance from the main roads, however, seem counterintuitive. This result probably depends on the evidence that these areas suffer from greater traffic jam or pollution or they are preferred for alternative uses such as for locating industrial plants or big shopping centres rather than residential use. Therefore, these effects decrease house prices.

scholarly journals Scalable Multiport Converter Structure for Easy Grid Integration of Alternate Energy Sources for Generation of Isolated Voltage Sources for MMC

Electronics ◽  
2021 ◽  
Vol 10 (15) ◽  
pp. 1779
Author(s):  
Syed Rahman ◽  
Irfan Khan ◽  
Khaliqur Rahman ◽  
Sattam Al Otaibi ◽  
Hend I. Alkhammash ◽  
...  
Keyword(s):  
Renewable Energy ◽  
Renewable Energy Sources ◽  
Energy Resources ◽  
Energy Sources ◽  
Renewable Energy Resources ◽  
Component Level ◽  
Storage Devices ◽  
Multiport Converter ◽  
Detailed Simulation ◽  
The Individual

This paper presents a novel, scalable, and modular multiport power electronic topology for the integration of multiple resources. This converter is not only scalable in terms of the integration of multiple renewable energy resources (RES) and storage devices (SDs) but is also scalable in terms of output ports. Multiple dc outputs of a converter are designed to serve as input to the stacking modules (SMs) of the modular multilevel converter (MMC). The proposed multiport converter is bidirectional in nature and superior in terms of functionality in a way that a modular universal converter is responsible for the integration of multiple RES/SDs and regulates multiple dc output ports for SMs of MMC. All input ports can be easily integrated (and controlled), and output ports also can be controlled independently in response to any load variations. An isolated active half-bridge converter with multiple secondaries acts as a central hub for power processing with multiple renewable energy resources that are integrated at the primary side. To verify the proposed converter, a detailed design of the converter-based system is presented along with the proposed control algorithm for managing power on the individual component level. Additionally, different modes of power management (emulating the availability/variability of renewable energy sources (RES)) are exhibited and analyzed here. Finally, detailed simulation results are presented in detail for the validation of the proposed concepts and design process.

Mental health in a conflict area: Migration, economic stress and religiosity in the three southernmost provinces of Thailand

2016 ◽  
Vol 63 (2) ◽  
pp. 91-98 ◽  
Author(s):  
Kathleen Ford ◽  
Aree Jampaklay ◽  
Aphichat Chamratrithirong
Keyword(s):  
Mental Health ◽  
Multilevel Models ◽  
Psychiatric Symptoms ◽  
Economic Stress ◽  
Economic Effects ◽  
World Health ◽  
Thai Government ◽  
And Migration ◽  
The Individual ◽  
Self Reporting Questionnaire

Aim: Three southern provinces of Thailand, Pattani, Yala and Narathiwat, have been involved in a long period of unrest due to differences between the population in the provinces and the Thai government with regard to language, culture and governance. The objectives of this article are to examine the effects of everyday stressors due to the conflict, including economic stress and migration, as well as the effect of religiosity on the reporting of psychiatric symptoms among adults in the three provinces. Methods: Data were drawn from a survey conducted in 2014. The survey included a probability sample of 2,053 Muslim adults aged 18–59 years.Mental health was assessed using World Health Organization’s (WHO) Self-Reporting Questionnaire (SRQ) of 20 questions. Multilevel models were estimated to examine the influence of economic stress due to the conflict, as well as community and individual aspects of migration and religion on mental health. Results: The data showed that migration from the household and the community and the economic effects of the unrest were associated with reporting of more psychiatric symptoms among adults in the southern provinces. Religion was related to reporting of fewer psychiatric symptoms at the individual and the community levels. Conclusion: The study documented increased reporting of psychiatric symptoms among persons reporting perceived household economic stress due to the conflict and the migration of family members.

Digital Twin for Smart Manufacturing: The Practitioner’s Perspective

2020 ◽  
Author(s):  
Maja Bärring ◽  
Björn Johansson ◽  
Goudong Shao
Keyword(s):  
Conceptual Development ◽  
Production Systems ◽  
Manufacturing Sector ◽  
Smart Manufacturing ◽  
Digital Twin ◽  
Adoption And Implementation ◽  
New Information ◽  
Digital Twins ◽  
Discrete Manufacturing ◽  
Design Production

Abstract The manufacturing sector is experiencing a technological paradigm shift, where new information technology (IT) concepts can help digitize product design, production systems, and manufacturing processes. One of such concepts is Digital Twin and researchers have made some advancement on both its conceptual development and technological implementations. However, in practice, there are many different definitions of the digital-twin concept. These different definitions have created a lot of confusion for practitioners, especially small- and medium-sized enterprises (SMEs). Therefore, the adoption and implementation of the digital-twin concept in manufacturing have been difficult and slow. In this paper, we report our findings from a survey of companies (both large and small) regarding their understanding and acceptance of the digital-twin concept. Five supply-chain companies from discrete manufacturing and one trade organization representing suppliers in the automotive business were interviewed. Their operations have been studied to understand their current digital maturity levels and articulate their needs for digital solutions to stay competitive. This paper presents the results of the research including the viewpoints of these companies in terms of opportunities and challenges for implementing digital twins.

Sign in / Sign up

Export Citation Format

Share Document