Searched for: subject:"maintenance"
(1 - 20 of 168)

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Lee, J. (author), Mitici, M.A. (author)
Aircraft maintenance is key for safe and efficient aircraft operations. While most studies propose cost-efficient maintenance strategies, the safety and efficiency of these strategies need to be quantified. This paper proposes a formal framework to assess the safety and efficiency of maintenance strategies by means of agent-based modelling,...
journal article 2020
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Reitsema, A.D. (author), Lukovic, M. (author), Grunewald, S. (author), Hordijk, D.A. (author)
Most of the bridges and viaducts in the Netherlands were built in the sixties and seventies of the last century, and an increasing number of them will have to be replaced due to technical or functional reasons. The Netherlands is not an exception, many industrialized countries will face a similar replacement task in the near future. With the...
journal article 2020
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van den Boomen, M. (author), Spaan, M.T.J. (author), Shang, Y. (author), Wolfert, A.R.M. (author)
Infrastructure maintenance and replacement decisions are subject to uncertainties such as regular asset degradation, structural failure, and price uncertainty. In the engineering domain, Markov Decision Processes (MDPs) typically focus on uncertainties regarding asset degradation and structural failure. While the literature in the engineering...
journal article 2020
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Meijer, D.H. (author), Post, Johan (author), van der Hoek, J.P. (author), Korving, Hans (author), Langeveld, J.G. (author), Clemens, F.H.L.R. (author)
Drinking water distribution networks (WDNs) are a crucial infrastructure for life in cities. Deterioration of this ageing, and partly hidden from view, infrastructure can result in losses due to leakage and an increased contamination risk. To counteract this, maintenance strategies are required to maintain the service level. Information on...
journal article 2020
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Kirichek, Alex (author), Shakeel, A. (author), Chassagne, C. (author)
Purpose: Fluid mud layers can be substantial in waterways and they can jeopardise navigation when the ship’s keel comes in its vicinity. The nautical bottom has therefore to be properly characterised. Mud density and yield stress are used as criteria to characterise the nautical bottom. For a decade, measuring these parameters in situ has...
journal article 2020
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Verma, Amrit Shankar (author), Castro, Saullo G.P. (author), Jiang, Zhiyu (author), Teuwen, Julie J.E. (author)
The leading edge of a fiber composite wind turbine blade (WTB) is prone to erosion damages due to repeated rain droplet impact during its service life. Such damages are critical to the blade's aerodynamic as well as structural performance, ultimately resulting in substantial repair costs. An effective design of a coating material for WTB is...
journal article 2020
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Koornneef, H. (author), Verhagen, W.J.C. (author), Curran, R. (author)
When an aircraft experiences an unexpected issue during flight operations, a technician determines whether the aircraft can safely perform the next flight. This operational decision process - known as dispatch assessment - has to happen within limited available time between aircraft arrival and departure. Currently, technicians face two main...
journal article 2020
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Yazdan Mehr, M. (author), Bahrami, A. (author), van Driel, W.D. (author), Fan, X.J. (author), Davis, J.L. (author), Zhang, Kouchi (author)
In this paper, degradation mechanisms of optical materials, used in the light emitting diode (LED)-based products, are reviewed. The LED lighting is one of the fastest technology shifts in human history. Lighting accounts for almost 20% of the global electrical energy use, inferring that replacement of traditional lighting sources with LEDs...
journal article 2020
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Liu, X. (author), Markine, V.L. (author)
This paper presents the investigation of the root causes of the fast degradation of a railway crossing. The dynamic performance of the crossing was assessed using the sensor-based crossing instrumentation, and the measurement results were verified using the multi-body system (MBS) vehicle-crossing model. Together with the field inspections,...
journal article 2020
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Ruiz Arenas, S. (author), Rusak, Z. (author), Mejía-Gutierrez, Ricardo (author), Horvath, I. (author)
Cyber-physical systems (CPSs) have sophisticated control mechanisms that help achieve optimal system operations and services. These mechanisms, imply considering multiple signal inputs in parallel, to timely respond to varying working conditions. Despite the advantages that control mechanisms convey, they bring new challenges in terms of...
journal article 2020
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Jamshidi, A. (author)
Key Performance Indicators (KPIs) enable the infrastructure manager to keep the performance quality of the infrastructure at an acceptable level. A KPI must include specific features of the infrastructure such as functionality and criticality. The KPIs can be classified into three performance levels: (1) technical level KPIs; (2) tactical level...
doctoral thesis 2019
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Dhanisetty, V.S.V. (author)
There is a growth in the use of composites for the new generation of wide-body aircraft such as the Boeing 787 and Airbus A350. This shift from using aluminium as the primary material is motivated by the benefits of using composites in design, manufacturing and operations. Composites offer the aircraft manufacturer the ability to create more...
doctoral thesis 2019
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Vergara d'Alençon, L.M. (author), Gruis, V.H. (author), van der Flier, C.L. (author)
In the context of social vulnerability, the house is an important social and economic resource to cope with poverty. However, low-income homeowners face constraints to maintain their houses, negatively affecting the quality of their dwellings, buildings and neighbourhoods. In the case of Chile, current studies have shown high levels of...
journal article 2019
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Tautz-Weinert, Jannis (author), Yürüşen, Nurseda Y. (author), Melero, Julio J. (author), Watson, S.J. (author)
Commercial operation and maintenance of wind farms always involves trying to find the most cost-effective solution from various possible options. In this paper, a maintenance action within a Spanish wind farm was studied, whereby a blade replacement was required to prevent catastrophic failure. The conducted replacement was accompanied by an...
journal article 2019
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Koornneef, H. (author), Verhagen, W.J.C. (author), Curran, R. (author)
Delays are costly to airlines in both money and image. A significant number of delays is caused by unexpected technical failures of aircraft systems or components. These failures, if not dealt with efficiently, can cause disruptions in the flight schedule and network. The annual costs of these type of disruptions add up to an estimated cost...
conference paper 2019
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Goularte Carvalho, Suelen (author), Finavaro Aniche, M. (author), Veríssimo, Júlio (author), Durelli, Rafael (author), Gerosa, Marco Aurélio (author)
Software developers, including those of the Android mobile platform, constantly seek to improve their applications’ maintainability and evolvability. Code smells are commonly used for this purpose, as they indicate symptoms of design problems. However, although the literature presents a variety of code smells, such as God Class and Long...
journal article 2019
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Steendijk, Jasper (author), Beelaerts van Blokland, W.W.A. (author)
Purpose: The paper provides insights regarding the optimal maintenance strategies for offshore wind farms. The maintenance strategies distinct from each other with location of the operation base and manner of logistics regarding the vessels. <br/>Methodology: The methodology for modelling the transport for maintenance operations for offshore...
conference paper 2019
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Rietveld, M.W.J. (author), Clemens, F.H.L.R. (author), Langeveld, J.G. (author)
Sewer and urban drainage systems deal with the runoff of areas that lack infiltration capacity. During wet weather, solids that are present on the street are (re)mobilised and transported to the drainage system by the runoff. These solids and their associated pollutants can have detrimental effects on receiving water quality. This paper presents...
conference paper 2019
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Vergara d'Alençon, L.M. (author)
The development of self-organised neighbourhoods positions the residents at the centre of the process. They organise themselves to plan, densify and subsequently manage their dwellings collectively. This chapter focuses on defining the type of management that accompanies the housing densification in condominium tenure, and the challenges related...
book chapter 2019
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Alderliesten, David (author), Valečkaitė, K. (author), Ziliotto Salamon, N. (author), Balint, J.T. (author), Bidarra, Rafael (author)
Commuters who travel by train often feel annoyed due to misunderstanding the causes of delays in train traffic. They oftentimes are unaware of the necessity of performing maintenance to stations, tracks, and trains. MainTrain is a serious game developed to teach commuters about rail-maintenance while simulating the difficulty of keeping...
conference paper 2019
Searched for: subject:"maintenance"
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