Searched for: subject%3A%22Maritime%255C%2B%2526%255C%2BOffshore%22
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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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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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Brubak, L. (author), Hu, Z. (author), Korgesaar, M. (author), Schipperen, J.H.A. (author), Tabri, K. (author)
conference paper 2021
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Sunnardianto, G.K. (author), Bokas, G. (author), Hussein, A. (author), Walters, C.L. (author), Moultos, O.A. (author), Dey, P. (author)
A combined density functional theory and molecular dynamics approach is employed to study modifications of graphene at atomistic level for better H2 storage. The study reveals H2 desorption from hydrogenated defective graphene structure, V222, to be exothermic. H2 adsorption and desorption processes are found to be more reversible for V222 as...
article 2021
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Hussein, A. (author), Krom, A.H.M. (author), Dey, P. (author), Sunnardianto, G.K. (author), Moultos, O.A. (author), Walters, C.L. (author)
article 2021
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Bobeldijk, M. (author), Dragt, R.C. (author), Hoogelnd, M.G. (author), van Bergen, J. (author)
Sailing in ice-infested waters has become more relevant for the Royal Netherlands Navy (RNLN). A method is developed to determine the technical safe speed for a single ice floe impact with a typical non-ice strengthened naval vessel. A representative ice floe impact load scenario is applied to three structural arrangements for the side shell...
article 2021
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Deul, M.L. (author), van Lieshout, P.S. (author)
Binnen het MIIP Hydrogen for Dredging is in samenwerking met een consortium (zie hieronder) gewerkt aan het identificeren van barrières met betrekking tot het varen op waterstof voor een bagger schip. Het doel van de MIIP is het opzetten van een roadmap voor de ontwikkeling van een waterstof systeem aan boord van bagger schepen voor de periode...
report 2021
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Jiang, Q. (author), Bertolo, V.M. (author), Popovich, V.A. (author), Sietsma, J. (author), Walters, C.L. (author)
Macroscale cleavage fracture toughness of high strength steels is strongly related to the fracture of hard microstructural inclusions. Therefore, an accu rate determination of the local stress on these inclu sions based on the matrix stress is necessary for the statistical modelling of macroscale cleavage fracture. This paper presents analytical...
article 2021
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Bertolo, V.M. (author), Jiang, Q. (author), Walters, C.L. (author), Pupovich, V.A. (author)
One of the main challenges in applying thick-section high-strength steels (HSS) at arctic condition in offshore and maritime industry is to maintain a sufficient level of toughness to prevent brittle failure. An aspect that requires special attention is the through-thickness microstructural variation which may result in different local...
conference paper 2020
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Chanklia, G. (author), George, D. (author), Eleftherios, K. (author), van Vugt, J. (author), Paulo, M. (author), Rye, T.S. (author)
Modern design procedures in maritime transportation are faced by multiple challenges related to technical and operational constraints for safety, energy efficiency, cost effectiveness and environmental performance. These requirements, in combination with a wide range of machinery technologies, result in a complex landscape of solutions which can...
conference paper 2020
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Atli-Veltin, B. (author), Coppejans, O.J. (author), Hoogeland, M. (author), van Bergen, J.W. (author)
Increasing resistance against impact, either from other ships, floating objects or icebergs, will make shipping safer. Lean Duplex, which is in the stainless steel family, has high strength, and corrosion resistance. Lean Duplex is investigated focusing on its crash resistance in raking scenarios as part of an ongoing project. Material...
conference paper 2020
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Heidari, H. (author)
Considerable work has been done on the modelling of fracture and necking for accidents in the maritime and offshore industry, but very little has been done to find the crack orientation during this failure. Such information will be required in future analyses which use the eXtended Finite Element Method (XFEM), rather than the element deletion...
conference paper 2020
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Hagenbeek, M. (author)
A dedicated team of TNO experts has concluded a series of large-scale tests on a representative composite ship structure. The spectacular ultimate test reached a load of 800 tonnes, which is almost twice the design load.
article 2020
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Bergsma, J.M. (author), Pruyn, J. (author), van de Kaa, G. (author)
Energy transition is affecting the European maritime sector at an increasing rate. New technologies and regulations are being introduced with increasing speed. The ability to adapt to these changes is crucial for the economic success of the maritime sector. However, the sector is challenged by inertia due to its global nature and long-life...
article 2020
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de Jonge, V. (author), Harmsen, J. (author)
Increasing pressure on shipping to contribute to reduce Greenhouse Gas emissions is changing the landscape for marine fuels. In this Green Maritime Methanol project, the feasibility of application of methanol for the maritime sector are being elaborated, with a focus on short sea shipping. As part of this project, this report compares the Total...
report 2020
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Walters, C.L. (author), Coppejans, O.J. (author), Hoogeland, M.G. (author)
In a prior project, TNO has presented a low-cost way of finding frac-ture toughness of base materials for cleavage fracture. That method features a small-scale CTOD specimen, combined with simplified sensors, less fatigue pre-cracking, faster testing, and no need for a temperature chamber. This meth-od has been extended to welds by considering...
conference paper 2019
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Brubak, L. (author), Hu, Z. (author), Korgesaar, M. (author), Schipperen, J.H.A. (author), Tabri, K. (author)
This paper presents a benchmark study on grounding simulations. The objective was to compare key parameters in modelling techniques and assump-tions for finite element (FE) analysis. Five contributors participated in the bench-mark study by performing numerical simulations, and results were compared with available results from experimental tests...
conference paper 2019
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Jiang, Q. (author), Bertolo, V.M. (author), Popovich, V.A. (author), Walters, C.L. (author)
Offshore activity in low-temperature areas requires the use of analysis methods that are capable of reliably predicting cleavage (brittle) fracture of ferritic steels in order to guarantee the structural integrity during service. Cleavage fracture is controlled by physical events at different size scales and is influenced by the multiple...
conference paper 2019
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Schipperen, J.H.A. (author), Lopes Fernandes, R. (author)
public lecture 2019
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Rodriguez, C.M. (author), Pavlovic, M. (author), Dragt, R.C. (author), Schipperen, J.H.A. (author)
It is known that bond line thickness has an effect on the strength of adhesively bonded joints. However, most of the work done in this area focussed on bond lines up to 3 mm thick. In this paper the thickness effect is studied of bond lines up to 10 mm thick, which is a typical thickness for civil infrastructure and maritime applications. An...
conference paper 2019
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