Searched for: subject%3A%22Maritime%255C%2B%2526%255C%2BOffshore%22
(1 - 20 of 85)
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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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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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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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Hagenbeek, M. (author), van den Boom, S.J. (author), Werter, N.P.M. (author), Talagani, F. (author), van Roermund, M. (author), Bulder, B.H. (author)Expecting a 27MW Horizontal-Axis Wind Turbines (HAWT) platform to be the norm for wind turbines in 2040, the blades will have to be around 145m long. This will require a robust blade design, taking into account all inherent uncertainties of the design, production, testing, and operation to accurately predict lifetime and obtain reliable...report 2022
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Deul, M.L. (author), Hulsbosch-Dam, C.E.C. (author), Vredeveldt, A.W. (author), Werter, N.P.M. (author), Fernandes, A. (author)Green Methanol is one of the feasible alternative energy carrier candidates for replacing fossil fuels on board ships. Unfortunately methanol is toxic to humans and it has a flashpoint of 12 °C which is well below the minimum required temperature of 60 °C , according SOLAS, hence also posing a fire risk. Therefore methanol needs to be regarded...report 2022
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Ehlers, S. (author), Abdussarni, N. (author), Branner, K. (author), Fu, S. (author), Hoogeland, M.G. (author), Kolari, K. (author), Lara, P. (author), Michailides, C. (author), Murayama, H. (author), Rizzo, C. (author), Seo, J.K. (author), Kaeding, P. (author)Design methods and rule requirements have to be benchmarked with experimental or service history data. The Goal Based Standards (GBS) approach by IMO, see e.g., IMO Res. 296(87), 454(100) or MSC.1/Circ.1394, require benchmarking of standards by measuring the perfor mance of methodologies, assessments, criteria and requirements by using...conference paper 2022
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Hess, P.E. (author), An, C. (author), Brubak, L. (author), Chen, X. (author), Chiu, J.T. (author), Czujko, J. (author), Darie, I. (author), Feng, G. (author), Gaiotti, M. (author), Jang, B.S. (author), Kefal, A. (author), Makmum, S. (author), Ringsberg, J. (author), Romanoff, J. (author), Eldeen, S.S. (author), Schipperen, J.H.A. (author), Tabri, K. (author), Wang, Y. (author), Yanagihara, D. (author)Determining the ultimate strength of ship and offshore structures involves the ability to predict and measure component, sub-system, and system structural maximum capacity beyond which the capacity diminishes. The purpose of this committee is to present a summary of recent work published after the time period covered by the 2018 committee that...conference paper 2022
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Jiang, Q. (author), Bertolo, V.M. (author), Popovich, V. (author), Sietsma, J. (author), Walters, C.L. (author)One of the challenges in cleavage modelling is the strong sensitivity to material characteristics at the micro level. In this research, a microstructure-based method that is coupled with Finite Element Analysis is used to model the cleavage behavior of a S690 QT steel at -130°C. The method is a multi-barrier model which accounts for microcrack...conference paper 2022
Searched for: subject%3A%22Maritime%255C%2B%2526%255C%2BOffshore%22
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