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- Sousa, H. (author), Courage, W.M.G. (author) 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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Rozsas, A. (author), Slobbe, A.T. (author), Allaix, D.L. (author), Courage, W.M.G. (author), Bigaj van Vliet, A.J. (author), Burggraaf, H.G. (author)The objective of this paper is to explore the added value of full-probabilistic nonlinear finitebookPart 2019
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- Lagasse, L.C. (author), Courage, W.M.G. (author), Abspoel-Bukman, L.M. (author), Kruse, H. (author), Clemens, F. (author), Langeveld, J. (author) report 2019
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Pitilakis, K. (author), Argyroudis, S. (author), Fotopoulou, S. (author), Karafagka, S. (author), Kakderi, K. (author), Selva, J. (author), Salzano, E. (author), Basco, A. (author), Crowley, H. (author), Rodrigues, D. (author), Matos, J.P. (author), Schleiss, A.J. (author), Courage, W.M.G. (author), Reinders, J.E.A. (author), Akkar, S. (author), Cheng, Y. (author), Uckan, E. (author)In the context of the STREST project (http://www.strest-eu.org/), an engineering multi-level risk-based methodology to stress test critical non-nuclear infrastructures has been developed. This paper summarizes the STREST framework and its exploratory application to six key representative Critical infrastructures in Europe, exposed to variant...conference paper 2018
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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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Abspoel, L.M. (author), Courage, W.M.G. (author), van den Broeck, W. (author), Kruse, H. (author)Pipeline networks for gas and water are the lifelines of our society. Their presence and correct functioning translates in benefits and any disruption, malfunctioning or ruptures represent hazards for the community. Most pipelines are buried, which impedes direct monitoring of the structural reliability of the networks. The behavior of the soil...conference paper 2017
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Courage, W.M.G. (author), Dragt, R.C. (author), Pijpers, R.J.M. (author), Maljaars, J. (author), Walters, C.L. (author), van der Weijde, G.D. (author)design driver for Offshore Wind Turbine (OWT) substructures and also has an im-pact on operational costs. During service life, inspections are required to detect fa-tigue cracks at an early stage. These cracks may need to be repaired. The costs of in-spections and repair are high for offshore structures. To reduce the cost of energy, it is...article 2016
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Polder, R.B. (author), Pan, Y. (author), Courage, W.M.G. (author), Peelen, W.H.A. (author)Maintenance costs of reinforced concrete infrastructure (bridges, tunnels, harbours, parkingarticle 2016
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Kosgodagan, A. (author), Morales-Napoles, O. (author), Maljaars, J. (author), Courage, W.M.G. (author)Markov-based models for predicting deterioration for civil infrastructures are widely recognized as suitable tools addressing this mechanism. The objective of this paper is to provide insights regarding a network of orthotropic steel bridges in terms of degradation. Consequently, a model combining a dynamic Bayesian network and a Markov chain is...conference paper 2016
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Attema, T. (author), Courage, W.M.G. (author), Maljaars, J. (author), van Meerveld, H. (author), Paulissen, J.H. (author), Pijpers, R.J.M. (author), Slobbe, A.T. (author)This paper presents a monitoring and modelling methodology to assess the current and future conditions of steel bridges subjected to fatigue cracking. Steel bridges are subjected to fatigue cracking as a result of fluctuating stresses caused by the crossing of heavy vehicles. Specifically for orthotropic steel bridge decks, fatigue cracking is...conference paper 2015
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Polder, R.B. (author), Leegwater, G.A. (author), Worm, D.T.H. (author), Courage, W.M.G. (author)Cathodic protection (CP) of reinforcing steel has been applied successfully to concrete structures with corrosion damage for more than 25 years. Performance and maintenance data are reported from an inventory of CP systems in The Netherlands installed on about 100 structures between 1987 and 2010. The large majority provides corrosion protection...article 2014
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van Straalen, IJ.J. (author), Abspoel-Bukman, L.M. (author), Courage, W.M.G. (author), Mennink, J. (author)Nowadays, maintenance of wooden window frames strongly depends on the practical experience of the parties involved. To get a better understanding of the required maintenance period and maintenance actions, a model has been developed to predict durability. This model makes it possible to optimize maintenance in relation to the required quality,...conference paper 2014
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Vergeer, R. (author), Courage, W.M.G. (author), van Elst, N.P. (author), Huibregtse, J.N. (author), de Jong, T. (author)Expert judgement is een wijze voor het verzamelen van informatie van experts over een probleem of onderwerp, waarbij de verschillende experts op een valide wijze rekenkundig geaggregeerd worden.report 2014
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Helmholt, K.A. (author), Courage, W.M.G. (author)Underground infrastructures can fail due to ground movements. Due to the underground nature this is difficult to detect above ground. In a collaboration of multiple research institutes a new approach has been developed to estimate the probability of failure using underground position sensors. A Proof of Principle monitoring system was developed...conference paper 2013
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Courage, W.M.G. (author), Vrouwenvelder, A.C.W.M. (author), van Mierlo, T. (author), Schweckendieck, T. (author)A risk-based safety approach is indispensable to support decision-making on flood protection strategies and measures. In most deltaic areas, flood risk analysis involves more than analysing the flood hazard and the potential damage, and flood defence systems also play an important role. In such systems consisting of rivers, estuaries and flood...article 2013
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Peelen, W.H.A. (author), Neeft, E.A.C. (author), Leegwater, G. (author), van Kanten-Roos, W. (author), Courage, W.M.G. (author)Steel is discarded by railway owners as a material for underground structures near railway lines, due to uncertainty over increased corrosion by DC stray currents stemming from the traction power system. This paper presents a large scale field test in which stray currents interference of a sheet pile wall was monitored in realistic conditions....conference paper 2012
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Vervuurt, A.H.J.M. (author), Courage, W.M.G. (author), Steenbergen, R.D.J.M. (author)Voor de bepaling van het dwarskrachtdraagvermogen van constructies is de betonsterkte één van de bepalende parameters. Die neemt onder invloed van doorgaande hydratatie in de tijd sterk toe. Bij de beoordeling van kunstwerken kan gebruik worden gemaakt van de feitelijk aanwezige sterkte. Hierdoor kunnen kunstwerken worden goedgekeurd die in...article 2012
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Polder, R.B. (author), Peelen, W.H.A. (author), Courage, W.M.G. (author)Based on construction dates and observed time to corrosion induced damage, the future need for repair of reinforced concrete motorway bridges in The Netherlands is predicted. Due to the age distribution and in particular the relatively short life of conventional repairs, the need for maintenance will increase steeply over the next few decades....article 2012
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- Vervuurt, A.H.J.M. (author), Courage, W.M.G. (author), Steenbergen, R.D.J.M. (author) public lecture 2012