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Kell, N.P. (author), van der Weijde, A.H. (author), Li, L. (author), Santibanez-Borda, E. (author), Pillai, A.C. (author)This paper presents a novel agent-based, stochastic model, which uses game-theoretic principles to simulate Contract for Difference (CfD) auctions. The framework has use cases and implications for policymakers and renewable generators alike, and can be used by developers to prepare bidding strategy and for policymakers to empirically test...article 2023
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Bertolo, V. (author), Jiang, Q. (author), Terol Sanchez, M. (author), Riemslag, T. (author), Walters, C.L. (author), Sietsma, J. (author), Popovich, V. (author)High strength steels are widely used for structural applications, where a combination of excellent strength and ductile-to-brittle transition (DBT) properties are required. However, such a combination of high strength and toughness can be deteriorated in the heat affected zone (HAZ) after welding. This work aims to develop a relationship between...article 2023
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Deul, M.L. (author), Battum, C.H.H. (author), Hoogeland, M.G. (author), van Bergen, J.W. (author)Currently, fatigue life prediction of steel welded joints in ships is carried out using class rules and guidance, e.g. DNV-CG-0129. Such methods use a lower bound of the S-N curve. A Design Fatigue Factor (DFF) is suggested in DNV-RP-C203 as a safety factor to the fatigue life for locations that require a higher reliability level. It does not...bookPart 2023
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van 't Hof, C. (author), Huetink, H.J. (author), Erkel, A.G. (author)Plane stress numerical simulations of elastic-plastic deformations are commonly based on in-plane projected equations, that is, direct inclusion of the plane stress constraints into the three-dimensional elastic predictor and plastic corrector algorithm. In case of a full three-dimensional formulation (without plane stress constraints) and a Von...article 2023
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Jiang, Q. (author), Bertolo, V.M. (author), Pallaspuro, S. (author), Popovich, V. (author), Sietsma, J. (author), Walters, C.L. (author)Multi-barrier cleavage models consider cleavage fracture which is characterized by a series of microscale events. One of the challenges for multi-barrier cleavage models is the strong variations of cleavage parameters across different types of steels. The source and magnitude of the variations have not been studied systematically. In the current...article 2023
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Cravero, S. (author), Cristea, M.E. (author), Deul, M.L. (author), Walters, C.L. (author), Valdez, M.E. (author), Darcis, P. (author)Gaseous Hydrogen can have detrimental effects on the mechanical performance of carbon steels, and those effects need to be taken into account for the proper design of pipelines for H2 transportation systems. ASTM E1681 is the standard test method used to evaluate fracture toughness in an H2 environment and presents the possibility of testing...conference paper 2023
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- Hoogeland, M.G. (author), Deul, M.L. (author), Werter, N.P.M. (author), Sterkenburg, R.P. (author), Vredeveldt, A.W. (author) report 2023
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Li, C. (author), Coolen, J.W.P. (author), Scherer, L. (author), Mogollon, J.M. (author), Braeckman, U. (author), Vanaverbeke, J. (author), Tukker, A. (author), Steubing, B. (author)Large-scale offshore wind energy developments represent a major player in the energy transition but are likely to have (negative or positive) impacts on marine biodiversity. Wind turbine foundations and sour protection often replace soft sediment with hard substrates, creating artificial reefs for sessile dwellers. Offshore wind farm (OWF)...article 2023
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Lombardi, C. (author)Although warships have several layers of defence, history has shown a multitude of incidents where these have all failed resulting in battle damage of the ship. Much can be done in the design of the ship to provide an adequate level of resilience against anti-ship missiles, UNDEX threats, shaped charges, gunfire or asymmetric threats. You can...conference paper 2023
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Zhang, X. (author), Noel-Hermes, N. (author), Ferrari, G. (author), Hoogeland, M.G. (author)Corrosion of mooring chains is regarded as one of main threats to the offshore mooring systems. Localized corrosion is even more dangerous than uniform corrosion because it may not show significant mass loss but it can cause stress concentration and initiate cracks under force, leading to accelerated degradation of mooring chains. Localized...article 2022
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Hoogeland, M.G. (author), van der Werf, H. (author), Werter, N.P.M. (author), Grammatikopoulos, A. (author)The energy transition requires us to explore all options for generating non-fossil energy and offshore floating PV( OFPV) energy is gaining momentum with recent developments quite promising. The trend is to combine small individual floaters into a grid using connectors which can be made reasonably flexible. To address the challenges of offshore...conference paper 2022
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Moverly Smith, B. (author), Clayton, R. (author), van der Weijde, A.H. (author), Thies, P.R. (author)Recently, floating wind has enjoyed much public and governmental attention and is commonly identified as a crucial next step on the route to net zero targets for many countries. However, there is currently a large gap between the scale and readiness-level of devices in the water and the end-of- the-decade aspirational targets of many governments...article 2022
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Bertolo, V. (author), Jiang, Q. (author), Tiringer, U. (author), Walters, C.L. (author), Sietsma, J. (author), Popovich, V. (author)For structural assessment and optimal design of thick-section high-strength steels in applications under harsh service conditions, it is essential to understand the cleavage fracture micromechanisms. In this study, we assess the effects of through-thickness microstructure of an 80-mm-thick quenched and tempered S690 high-strength steel, notch...article 2022
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Heerens, G.J. (author), Dragt, R.C. (author), Hagenbeek, M. (author), van der Meer, K. (author), Max, T. (author), van Og, G. (author), Vera, C. (author), de Vries, J. (author), Breg, D. (author), Brouwer, D. (author), Douglas, J. (author), van Beek, N. (author)Geothermal energy can substantially contribute to lower CO2 emissions for heating of greenhouses and buildings. Geothermal production typically can be divided in High Temperature (HT) and Low Temperature systems (LT). HT can serve as source for electricity production and LT (typically below 100 °C, or 212 °F) for local direct heating. The...article 2022
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Huisman, M. (author), Ottolini, M. (author), Cerfontaine, B. (author), Brown, M.J. (author)This paper presents preliminary experimental and analytical investigations of the push-in pile concept, which aims at installing piles in the offshore environment without significant underwater noise. The concept replaces a large diameter pile with a cluster of closely spaced smaller piles. The piles are installed progressively by cycles of...article 2022
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- Cerfontaine, B. (author), Brown, M.J. (author), Davidson, C. (author), Sharif, Y.U. (author), Huisman, M. (author), Ottolini, M. (author) article 2022
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Bertolo, V. (author), Jiang, Q. (author), Scholl, S. (author), Petrov, R.H. (author), Hangen, U. (author), Walters, C.L. (author), Sietsma, J. (author), Popovich, V. (author)The through-thickness heterogeneous microstructure of thick-section high strength steels is responsible for the significant scatter of properties along the thickness. In this study, in order to identify the critical microstructural features in the fracture behaviour and allow for design optimisation and prediction of structural failure, the...article 2022
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Obers, S.F.P.M. (author), Overal, J.J. (author), Wong, W.J. (author), Walters, C.L. (author)Application of high-strength steels in the maritime and offshore industry is currently limited by rules governing the ratio of the yield to tensile strength (the Y/T ratio). To better understand the physical basis for these rules, the nature and extent of the plastic stress/strain field in the vicinity of a stress concentration (a circular hole)...article 2022
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Wong, W.J. (author), Walters, C.L. (author)High-strength steel beams are known to have less plastic rotation capacity than beams with lower yield strengths. This has been related to the decreased strain-hardening ability of high-strength steels, and various rules and standards for steel structures stipulate maximum limits on the allowable yield-to-tensile strength ( y/ u)ratio, which...conference paper 2022
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Gonzalez-Aparicio, I. (author), Vitulli, A. (author), Krishna-Swamy, S. (author), Hernandez-Serna, R. (author), Jansen, N. (author), Verstraten, P. (author)Offshore wind is the primary supplier of CO2-free electricity moving towards decarbonising the Dutch power system. The installed capacity aims to increase sevenfold to 21.5 GW by 2030. However, the current market trends of increasing renewable capacity, industrial electrification, gas and CO2 prices, the expansion of interconnection, and the...report 2022