Searched for: contributor%3A%22den+Besten%2C+J.H.+%28mentor%29%22
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CHEN, YUYUAN (author)
master thesis 2023
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Slange, Ruben (author)
Ships at sea encounter wave-induced cyclic loading, meaning fatigue is a governing limit state. The structural response introduces stress concentrations, hotspots, at notch geometry like welded joints locations. At the same time, the welding process typically introduces defects, meaning welded joints are typically the governing fatigue-sensitive...
master thesis 2023
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Giesen, Stefan (author)
Fatigue might be the governing limit state in marine structures mainly induced by the waves and wind. Therefore, using a lap joint for the shell plating to replicate the appearance of a riveted joint for a retro yacht is critical due to the limited fatigue resistance. For this joint type cracks initiated at the root, which should always be...
master thesis 2023
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Liu, Xinmiao (author)
Fatigue is typically a governing limit state for maritime structures, and weld joints are the most critical locations. Various fatigue damage criteria have been developed involving either an intact or cracked geometry parameter, incorporating local or global information. In this thesis, the effective notch stress based total life fatigue damage...
master thesis 2022
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Boer, Rien (author)
Due to the growing quest for renewable energy, wind turbines grow in size. This means that higher demands are posed on the transporting structures, also called tower grillages, which brings its challenges for their design. The fact that the structures considered in this thesis are placed on a ship makes the design even more complicated....
master thesis 2022
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Witvoet, Martijn (author)
Fatigue lifetime has proven to be a leading design parameter for naval vessels. In the field of fatigue analysis and design of welded joints, two overall methods are distinguished: the temporal and spectral approach. Using empirical models, the spectral approach is typically preferred due to its efficiency, even though damage estimates are...
master thesis 2022
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van Essen, Koen (author)
Fatigue strength is typically a governing limit state for marine structures. Predicting an accurate fatigue lifetime is important for structures (e.g. wind turbines) that are supposed to be out at sea for decades. It is valuable for all type of structures that encounter stochastic sea loadings to optimise the design so that fatigue failure is...
master thesis 2021
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de Bode, Sam (author)
Solar energy is considered to be one of the most promising energy alternatives among many renewable energy sources. On the pathway towards achieving climate goals, dramatic scale up of clean technologies is required, however the installation of solar energy has the burden of intense land requirement. Therefore, the onset of floating solar...
master thesis 2021
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Deul, Marije (author)
The current fatigue assessment methods for naval ships are intentionally conservative. This is in part due to uncertainties in the fatigue capacity (i.e. fatigue resistance) of the ship: the nominal and hot spot structural stress incorporate implicit conservatism due to the inherent data-scatter and the Linear Damage Accumulation Model (LDAM) by...
master thesis 2021
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Lavaerts, Eline (author)
Offshore solar power installations can be increased in size and efficiency compared to land based installations due to the availability of space and the cooling effect of water. To increase survivability in large waves, very large floating solar platforms can be made flexible. However, a flexible structure is susceptible to wrinkling due to...
master thesis 2020
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Rodenburg, Jorrit (author)
Offshore wind turbines are designed to persist harsh environmental conditions, including corrosion. Pitting corrosion is one of the most dangerous forms of corrosion. In combination with a fatigue loading, a corrosion pit could result into the failure of a structure, due to a minimal weight reduction. Of the corrosion fatigue process, the...
master thesis 2020
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Vuijk, Wouter (author)
The common practice of designing a ship is to look for ships with similar specifications and alter it to the client's needs. This often leads to structurally redundant and therefore overdimensioned ship designs. Hence, much improvement could be expected from ship structures where optimization algorithms help advise in the design process. In this...
master thesis 2020
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Donk, Rick (author)
Turret structures within FPSO's are subjected to a variety of repeated loads, due to the harsh environment they operate in during their service live, meaning that fatigue is a governing limit state in turret structural design. Turret structural components are connected by arc-welded joints which are considered particularly susceptible to fatigue...
master thesis 2019
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Verhelst, Hugo (author)
With increasing attention to climate change,renewable energy generation has become a major topic for research anddevelopment. Wind and solar energy are generated on land, whereas wave, windand tidal energy generators are getting attention in the offshore domain. Anovel extension of onshore solar energy is the concept of...
master thesis 2019
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De Meester, Hadewich (author)
Research to analyse and/or develop novel materials and techniques is necessary to address competition and safeguard craftmanship in shipbuilding. In this master thesis, two new approaches to reduce the production and maintenance costs are studied: {metal foam core, metal face sheet} sandwich materials and corner adstir fillet stationary shoulder...
master thesis 2019
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de Korte, Coen (author)
Monitoring fatigue damage is complex because ships are designed to crack after 20 years, and typically cracks will only occur after a long time. A novel fatigue damage sensor has been invented to indicate damage in corresponding aluminium welded joints. Fatigue damage is accelerated by introducing a stress concentration in the sensor w.r.t. the...
master thesis 2018
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Romer, Hugo (author)
master thesis 2017
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Obers, M.P.W. (author)
Confidential thesis, only summary available.
master thesis 2017
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Van der Laag, D.A.M. (author)
In structural analysis, multi-axial loads are often treated as a superposition of individual load com- ponents. Although this proves to be sufficient for static analyses, for dynamic and especially fatigue assessments, this sometimes leads to extreme overestimation of loads. In turn this results in highly over-dimensioning of structures to...
master thesis 2016
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Poen, G.J. (author)
The size and production capacity of Floating Production, Storage and Offloading units, or FPSOs, is ever growing. SBM Offshore specialized in converting existing oil tankers into FPSOs. One of the limitations they found was the available deck space for the topsides modules. A new concept was proposed to solve this problem: a twin hull FPSO, made...
master thesis 2015
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