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Strauss, A. (author), Bergmeister, K. (author), Daro, P. (author), Mancini, G. (author), Sattler, F. (author), Bigaj-van Vliet, A.J. (author)Accurate information from monitoring of structures plays a critical role in making informed decisions regarding structural safety control and maintenance needs. Unfortunately, there are several gaps in the existing standards and the monitoring practices at local, national, and transnational (e.g., European) levels. The wide diversity of assets...article 2023
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Allaix, D.L. (author), bigaj-van Vliet, A. (author), Cerar, B. (author)Road and railway infrastructure networks form the backbone of European transportation systems, carrying more than 80% of passenger and 50% of goods transport in Europe. Bridges and tunnels which are critical elements of the transport infrastructure networks, have in many cases reached their design service life and keep ageing, with the...conference paper 2022
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Bigaj - Van Vliet, A.J. (author), Allaix, D.L. (author), Kohler, D. (author), Scibilia, E. (author)This contribution is outlining the vision and approach developed in the IM-SAFE project towards the standardisation of monitoring, data-informed safety assessment and predictive maintenance policies of bridges and tunnels considering the integration of digital innovations and reports on the initial activity in the IM-SAFE project [1] that is...conference paper 2022
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Allaix, D.L. (author), Bigaj-van Vliet, A. (author)Aiming to ensure the safety of the transport infrastructure during operation through the improvement of maintenance policies across Europe, the European Commission opened in 2019 the call for the Coordination and Support Action (CSA) “Monitoring and safety of transport infrastructure”. The main goal of this CSA is to support the preparation of a...conference paper 2022
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Gómez, J.F. (author), Shoeibi Omrani, P.S. (author), Belfroid, S.P.C. (author)In gas wells, decreased/unstable production can occur due to difficult-to-predict dynamic effects resulted from late-life phenomena, such as liquid loading and flooding. To minimize the negative impact of these effects, maximize production and extend the wells’ lifetime, wells are often operated in an intermittent production regime. The goal of...conference paper 2021
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Schuts, M. (author), Alonso, M. (author), Hooman, J. (author)At Philips IGT, we develop and produce interventional X-ray systems. For a controller in these systems, we have an approximately five years old domain specific language. Like general programming languages, domains specific languages also evolve. These languages co-evolve together with their domain. The language used at IGT was initially created...conference paper 2021
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Shankar Verma, A. (author), Jiang, Z. (author), Ren, Z. (author), Caboni, M. (author), Verhoef, H. (author), van der Mijle-Meijer, H. (author), Castro, S.G.P. (author), Teuwen J.J.E., (author)Rain-induced leading-edge erosion (LEE) of wind turbine blades (WTBs) is associated with high repair and maintenance costs. The effects of LEE can be triggered in less than 1 to 2 years for some wind turbine sites, whereas it may take several years for others. In addition, the growth of erosion may also differ for different blades and turbines...article 2021
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Nicoreac, M.P. (author), Courage, W.M.G. (author), Kempker, P.L. (author)The support structures of offshore wind turbines (OWTs) are difficult to inspect due to the environmental conditions and difficult access to structural parts. The inspection and maintenance cost are therefore high, providing a good motivation for further optimizing the planning and costs for these actions. In the context of the FeLoSeFI project,...article 2020
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Quantumfysica is voor gewone stervelingen een ongrijpbaar fenomeen. Toch weten knappe koppen het te vertalen naar quantumtechnologie die de belofte van concrete ‘gamechanging’ toepassingen in zich heeft. Het Delftse onderzoeksinstituut QuTech ontwikkelt er demonstrators voor. Zo heeft de toekomstige quantumcomputer een ongelooflijke...article 2019
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Wessels, J.F.M. (author), van der Mark, P.J. (author), Bektas, K.E. (author), Bakker, J. (author), van der Voort, M. (author)Transportation infrastructure assets are designed to meet pre-specified reliability, availability, maintainability and safety (RAMS) requirements. Electrical and mechanical components are critical elements with respect to the RAMS-criteria. Unplanned failure of these components lead to societal impact, unsafe situations or costs. The trend in...conference paper 2019
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Stock Williams, C.F.W. (author), Krishna Swamy, S. (author)Offshore wind farm managers and schedulers need to manage large numbers of wind turbine visits every day, in order to: repair minor faults; conduct inspections; and perform scheduled service operations. Daily schedules form a choice of which maintenance activities to conduct, taking account of: constraints on weather conditions, shifts, vessel...article 2019
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Borth, M. (author), Barbini, L. (author)Predictive maintenance strategies which estimate remaining useful life of system components ensure reliable availability of assets and low total costs of ownership by preventing breakdowns and down-times with timely and well-scheduled maintenance. The focus on the components’ life times falls short, however, to infer the system-level capability...conference paper 2019
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Catoire, M. (author), Krom, B.N. (author), van Erp, J.B.F. (author)A high level of dexterity is becoming increasingly important for teleoperated inspection, maintenance and repair robots. A standard test to benchmark system dexterity can advance the design, quantify possible improvements, and increase the effectiveness of such systems. Because of the wide variety of tasks and application domains ranging from...conference paper 2018
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Klusener, S. (author), Mooij, A.J. (author), Ketema, J. (author), van Wezep, H. (author)When software components are developed iteratively, code frequently evolves in an inductive manner: A unit is created and is then copied and modified many times. Such development often happens when variation points and, hence, proper domain abstractions are initially unclear. As a result, there may be substantial amounts of code duplication, and...conference paper 2018
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Hu, B. (author), Krishna Swamy, S. (author), Hermans, K.W. (author)During the Offshore Maintenance Joint Industry Project (OM JIP), the offshore wind farm simulation tool ECN O&M Access has been upgraded from version 1.0 to 2.0, enhancing the modelling of wind farm accessibility by incorporating vessel hydrodynamics and motion-induced human fatigue. Case studies are performed using the new version of ECN O&M...report 2018
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van Meerveld, H. (author), Schoenmaker, R. (author), Wessels, J.F.M. (author), Bakker, J. (author)This paper discusses the development and first testing of a valid, reliable, functional and simple indicator, that represents the long term effect of short term decisions. Such an indicator can assist counteracting short term views in network level asset management decision making. Short-termism or myopia may occur in cases where service level...conference paper 2017
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- Hauck, M. (author), Giezen, C. (author), Calvert, S.C. (author), Keijzer, E.E. (author), de Vos-Effting, S.E. (author), van Vliet, D. (author), Voskuilen, J. (author) conference paper 2017
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Peelen, W.H.A. (author), Vervuurt, A.H.J.M. (author)Modular expansion joints constitute a substantial part of direct and indirect costs of bridge maintenance. Joint condition assessments can be improved to predict or detect damages earlier. In this way the probability for consequential damages such as emergency repair and a shortened lifespan is reduced. Maintenance can be planned well in advance...conference paper 2017
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Courage, W.M.G. (author), Nicoreac, M.P. (author), Kempker, P.L. (author)For offshore wind turbines (OWT’s) environmental and accessibility conditions make inspection and maintenance costly. Hence the potential of cost reduction when the planning of these actions can be optimized. Taking uncertainties into account, a risk based concept is adopted in which probabilities of failure and its consequences are balanced...conference paper 2017
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Mooij, A.J. (author), Joy, M.M. (author), Eggen, G. (author), Janson, P. (author), Radulescu, A. (author)Software maintenance consumes an increasing proportion of industrial software engineering budgets. Over time the technical debt grows, until it becomes unavoidable to rejuvenate the legacy software to a new design, while preserving the valuable domain logic. In this paper, we explore the feasibility of a model-based rejuvenation approach for use...bookPart 2016