Search results for: Diego Galar

Items from 1 to 20 out of 21 results

article

Ergonomics evaluation in designed maintainability: case study using 3 DSSPP

Kiumars Teymourian, Phillip Tretten, Dammika Seneviratne, Diego Galar

Management Systems in Production Engineering > 2021 > nr 4 (29) > 309--319

Maintainability is one of the design parameters (reliability, availability, maintainability, and safety (RAMS)) and maintenance is needed to keep the respective design in sustainable use. At the same time, the human is involved in the form of interface and interaction in an engineered product/system designed. Ergonomics is a multi-disciplinary science that considers human capabilities and limitations...

article

Dimensioning reserve bus fleet using life cycle cost models and condition based/predictive maintenance: a case study

Hugo Raposo, José Torres Farinha, Luís Ferreira, Diego Galar

Public Transport > 2018 > 10 > 1 > 169-190

The paper demonstrates the dependence of a fleet reserve of buses on the maintenance policy of the whole fleet, in particular, condition-based maintenance using a motor oil degradation analysis. The paper discusses an approach to evaluate the oil degradation and the prediction of the next value for one relevant oil variable. The methodology to evaluate the reserve fleet is based on bus availability,...

article

Architecture for hybrid modelling and its application to diagnosis and prognosis with missing data

Urko Leturiondo, Oscar Salgado, Lorenzo Ciani, Diego Galar, more

Measurement > 2017 > 108 > C > 152-162

The advances in technology involving internet of things, cloud computing and big data mean a new perspective in the calculation of reliability, maintainability, availability and safety by combining physics-based modelling with data-driven modelling. This paper proposes an architecture to implement hybrid modelling based on the fusion of real data and synthetic data obtained in simulations using a...

chapter

Optimization in performance-based logistics contracts

Julio C. O. Lopes, Rodrigo Scarpel, Fernando T. M. Abrahao, Diego Galar, more

2017 IEEE International Workshop on Metrology for AeroSpace (MetroAeroSpace) > 413 - 418

2017 IEEE International Workshop on Metrology for AeroSpace (MetroAeroSpace)

Performance-based Logistics (PBL) contracts require metrics and methodologies set in a systemic way to provide readiness for the warfighter at reasonable costs. There must be a clever and verifiable connection of metrics in order to access and analyze data and to deliver sound and consistent inputs for the entire support system to accomplish its goals. A system of incentives and penalties usually...

article

Semantic Framework for Predictive Maintenance in a Cloud Environment

Bernard Schmidt, Lihui Wang, Diego Galar

Procedia CIRP > 2017 > 62 > C > 583-588

Proper maintenance of manufacturing equipment is crucial to ensure productivity and product quality. To improve maintenance decision support, and enable prediction-as-a-service there is a need to provide the context required to differentiate between process and machine degradation. Correlating machine conditions with process and inspection data involves data integration of different types such as...

article

Fuzzy condition monitoring of recirculation fans and filters

Mike Gerdes, Diego Galar

International Journal of System Assurance Engineering and Management > 2016 > 7 > 4 > 469-479

A reliable condition monitoring is needed to be able to predict faults. Pattern recognition technologies are often used for finding patterns in complex systems. Condition monitoring can also benefit from pattern recognition. Many pattern recognition technologies however only output the classification of the data sample but do not output any information about classes that are also very similar to the...

article

RUL estimation and maintenance optimization for aircraft engines: a system of system approach

Veronica Fornlöf, Diego Galar, Anna Syberfeldt, Torgny Almgren

International Journal of System Assurance Engineering and Management > 2016 > 7 > 4 > 450-461

An aircraft engine is a system of systems with several degrees of complexity. It is important to perform the correct amount of maintenance at each individual maintenance event. A mathematical replacement model is used to ensure that the correct maintenance is performed. The reliability of the results from the mathematical replacement model will be improved if there is a better way to estimate the...

chapter

Maintenance, prognostics and diagnostics approaches for aircraft engines

Veronica Fornlof, Diego Galar, Anna Syberfeldt, Torgny Almgren, more

2016 IEEE Metrology for Aerospace (MetroAeroSpace) > 403 - 407

2016 IEEE Metrology for Aerospace (MetroAeroSpace)

In avionics application one of the most important competition factors is the reliability, given that the failure occurrence may leads to a critical state for the functioning of the aircraft. Different maintenance, prognostics and diagnostics approaches are possible with the final aim to optimize both system's availability and safety. Aircraft engines represent a safety critical part of the airplane...

article

Multi-criteria intuitionistic fuzzy group decision analysis with TOPSIS method for selecting appropriate cloud solution to manage big data projects

Nitin Sachdeva, Ompal Singh, P. K. Kapur, Diego Galar

International Journal of System Assurance Engineering and Management > 2016 > 7 > 3 > 316-324

Today technology that learns from data to forecast future behavior of individuals, organizations, government and country as a whole, is playing a crucial role in the advancement of human race. In fact, the strategic advantage most of the companies today strive for are use of new available technologies like cloud computing and big data. However, today’s dynamic business environment poses severe challenges...

chapter

An EMC study on the interopability of the European railway network

Eva Karadimou, Rob Armstrong, Inigo Adin, Virginie Deniau, more

2015 IEEE International Symposium on Electromagnetic Compatibility (EMC) > 428 - 433

2015 IEEE International Symposium on Electromagnetic Compatibility - EMC 2015

The research presented here deals with the electromagnetic compatibility in the railway environment. In particular it focuses on four research areas: the spot signalling systems, the track circuits, the GSM-R and the broadcasting services. A review of the current railway standards is followed by a research on the immunity limits, the worst case scenarios and cross acceptance EMC tests for the four...

article

Context awareness for maintenance decision making: A diagnosis and prognosis approach

Diego Galar, Adithya Thaduri, Marcantonio Catelani, Lorenzo Ciani

Measurement > 2015 > 67 > Complete > 137-150

All assets necessarily suffer wear and tear during operation. Prognostics can assess the current health of a system and predict its remaining life based on features capturing the gradual degradation of its operational capabilities. Prognostics are critical to improve safety, plan successful work, schedule maintenance, and reduce maintenance costs and down time. Prognosis is a relatively new area but...

article

Developing RCM strategy for wind turbines utilizing e-condition monitoring

Sarbjeet Singh, David Baglee, Knowles Michael, Diego Galar

International Journal of System Assurance Engineering and Management > 2015 > 6 > 2 > 150-156

Renewable energy sources such as wind energy are available without any limitations. In order to extract this energy efficiency, the reliability of such technologies is critical if pay back periods and power generation requirements are to be met. Due to recent developments in the field of wind engineering and in particular the expansion of installed capacity around the world, the need for reliable...

article

Railway Assets: A Potential Domain for Big Data Analytics

Adithya Thaduri, Diego Galar, Uday Kumar

Procedia Computer Science > 2015 > 53 > Complete > 457-467

Two concepts currently at the leading edge of todays information technology revolution are Analytics and Big Data. The public transportation industry has been at the forefront in utilizing and implementing Analytics and Big Data, from ridership forecasting to transit operations Rail transit systems have been especially involved with these IT concepts, and tend to be especially amenable to the advantages...

article

Composite indicator for railway infrastructure management

Stephen M. Famurewa, Christer Stenström, Matthias Asplund, Diego Galar, more

Journal of Modern Transportation > 2014 > 22 > 4 > 214-224

The assessment and analysis of railway infrastructure capacity is an essential task in railway infrastructure management carried out to meet the required quality and capacity demand of railway transport. For sustainable and dependable infrastructure management, it is important to assess railway capacity limitation from the point of view of infrastructure performance. However, the existence of numerous...

article

Self-maintenance techniques: a smart approach towards self-maintenance system

Sarbjeet Singh, Diego Galar, David Baglee, Sten-Erik Björling

International Journal of System Assurance Engineering and Management > 2014 > 5 > 1 > 75-83

The modern systems operating at varying conditions brought a new paradigm shift to in-machine renovation and repair. These systems often encounter an infinite collection of clumsy diagnostic tools and applications that decrease agility, increase time-to-repair, and increase management overheads. One approach is to remove the human and potential costly and time consuming human errors, from the diagnosis...

article

Context Driven Remaining Useful Life Estimation

Carl-Anders Johansson, Victor Simon, Diego Galar

Procedia CIRP > 2014 > 22 > Complete > 181-185

In the context of maintenance activities maintainers rely on machine information, their past breakdowns, adequate repair methods and guidelines as well as new research results in the area. They usually get access to information and knowledge by using information systems (nondestructive testing (NDT) or condition monitoring.), local databases, e-resources or traditional print media. Basically it can...

article

Implementation of performance based maintenance contracting in railway industries

Stephen M. Famurewa, Matthias Asplund, Diego Galar, Uday Kumar

International Journal of System Assurance Engineering and Management > 2013 > 4 > 3 > 231-240

The achievement of maintenance objectives to support the overall business objectives is the pursuit of any maintenance department. Using in-house or outsourced maintenance service provider is a decision which poses challenge in the management of maintenance function. Should the decision be for outsourcing, the next concern is the selection of the most appropriate strategy suitable for the business...

chapter

RUL prediction using moving trajectories between SVM hyper planes

Diego Galar, Uday Kumar, Yuan Fuqing

2012 Proceedings Annual Reliability and Maintainability Symposium > 1 - 6

2012 Annual Reliability and Maintainability Symposium (RAMS)

With increasing amounts of data being generated by businesses and researchers, there is a need for fast, accurate and robust algorithms for data analysis. Improvements in database's technology, computing performance and artificial intelligence have contributed to the development of intelligent data analysis. The primary aim of data mining is knowledge discovery, i.e. patterns in the data that lead...

chapter

Human factor in maintenance performance measurement

Diego Galar, Christer Stenstrom, Aditya Parida, Rupesh Kumar, more

2011 IEEE International Conference on Industrial Engineering and Engineering Management > 1569 - 1576

2011 IEEE International Conference on Industrial Engineering and Engineering Management (IEEM)

The maintenance performance measurement is often faced with a lack in knowledge about the real function of the maintenance department within organizations, and consequently the absence of appropriate targets emanating from the global mission and vision. These facts bring about metrics not adapted to the real needs, which has a strong load of human factor and without a roadmap of the amount of data...

article

Application of dynamic benchmarking of rotating machinery for e-maintenance

Diego Galar, Lamban Pilar, Berges Luis

International Journal of System Assurance Engineering and Management > 2010 > 1 > 3 > 246-262

The vibration analysis and condition monitoring technology is based on comparison of measurements obtained with benchmarks suggested by manufacturers or standards. In this case, the references provided by current rules are static and independent of parameters such as age, operational or environmental conditions in which the machine is analyzed. It creates false alarms and many unnecessary interventions...

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INFONA - science communication portal

Search results for: Diego Galar

Ergonomics evaluation in designed maintainability: case study using 3 DSSPP

Dimensioning reserve bus fleet using life cycle cost models and condition based/predictive maintenance: a case study

Architecture for hybrid modelling and its application to diagnosis and prognosis with missing data

Optimization in performance-based logistics contracts

Semantic Framework for Predictive Maintenance in a Cloud Environment

Fuzzy condition monitoring of recirculation fans and filters

RUL estimation and maintenance optimization for aircraft engines: a system of system approach

Maintenance, prognostics and diagnostics approaches for aircraft engines

Multi-criteria intuitionistic fuzzy group decision analysis with TOPSIS method for selecting appropriate cloud solution to manage big data projects

An EMC study on the interopability of the European railway network

Context awareness for maintenance decision making: A diagnosis and prognosis approach

Developing RCM strategy for wind turbines utilizing e-condition monitoring

Railway Assets: A Potential Domain for Big Data Analytics

Composite indicator for railway infrastructure management

Self-maintenance techniques: a smart approach towards self-maintenance system

Context Driven Remaining Useful Life Estimation

Implementation of performance based maintenance contracting in railway industries

RUL prediction using moving trajectories between SVM hyper planes

Human factor in maintenance performance measurement

Application of dynamic benchmarking of rotating machinery for e-maintenance

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