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Blok, Adriaan (author)Selective laser melting (SLM) is an additive manufacturing technique, which is currently on the rise of being used for manufacturing bone implants. Spinal cage, dental and hip implants can for example be manufactured using SLM. Ti6Al4V lattice structures, categorised as metamaterials, can be printed by SLM with mechanical properties close to...master thesis 2019
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Lee, Jaehyeun (author)Fatigue is often a governing design factor for offshore wind turbines. Since the design of offshore wind turbines includes conservatism, the actual accumulated fatigue damage can be lower than what the turbine is designed for. In this case, the operator can make a decision on life time extension of existing wind turbines. Therefore, it is...master thesis 2019
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van Maris, Rutger (author)This thesis presents a model that is able to predict fatigue crack growth and damage directionality in non-conventional Fibre Metal Laminates (FMLs) in CentreCracked Tension (CCT) specimens. Non-conventional FMLs encompass all FMLs other than standardised ones such as GLARE. FMLs can be made non-conventional by using multiple fibre types, any...master thesis 2019
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ter Meulen, Ruben (author)A random periodic two-dimensional spring network us built using a Poisson disk distribution and computing the Delaunay triangulation of the centers of the disks. The edges of the network represent springs that obey Hooke’s law with an adjustment on the spring constant. The adjustment allows spring to soften and to break. The two-dimensional...bachelor thesis 2019
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Gunecha, Saurabh (author)Orthotropic bridges are being built for more than half a century. These bridges are prone to high cycle fatigue due to traffic loading. Early onset of fatigue cracking is a serious issue in both old and recently built bridges. To prevent this a number of different cross section have been suggested. Sandwich Panel is one of the suggested...master thesis 2019
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Lagerweij, Bram (author)Complex structural shapes can be produced with additive manufacturing. The geometrical complexity that can be achieved translates into an increase in possible designs. Designing these structures with traditional methods is difficult. A design process with computational optimization will enable engineers to use the geometrical freedom offered by...master thesis 2019
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Rikeros Orozco, Daniel (author)There are several methods to perform fatigue assessment as described by the Eurocode 3 and the International Institute of Welding (IIW). The codes establish the relation between stress ranges and their respective number of cycles until failure of the detail. This method is called S-N curves, however this is based mainly on nominal stresses. A...master thesis 2019
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Hillen, Huub (author)In the last century, the offshore industry has installed a network of offshore pipelines in the southern North Sea. Due to decreasing oil and gas extraction in the North Sea, many pipelines of this network are becoming redundant. A potential option for the reuse of these pipelines is the transport and storage of gaseous hydrogen, which is...master thesis 2019
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- Stikkelorum, Sascha (author) master thesis 2019
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Thomas, Miguel (author)At present, commercially available wearable sensors are only capable of tracking an individual’s physical activities and vital signs (such as heart rate). However, these devices fail to provide insight into fatigue itself. Fatigue is a broad term with many meanings. Fatigue in this paper refers to physiological changes where the muscle becomes...master thesis 2019
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BAKALONI, LENA (author)Wind turbines constitute a sustainable and effective solution for the production of energy using wind power. Offshore wind turbines are becoming of special interest. However, their design poses great challenges, since an offshore structure is subjected to combined wind and wave dynamic loading that is characteristic of the installation site and...master thesis 2018
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van Ommen, Trystan (author)Fixed support structures for offshore wind turbines are commonly used for shallow water (till 45 meters). In many countries shallow-waters are rare. Floating support structures may be the solution for these areas. Many concepts have been developed but three concepts have been analyzed (spar, semi-submergible and the tension leg platform (TLP))...master thesis 2018
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Safai, Lauren (author)As interest in additive manufacturing, or 3D printing, increases, technological improvements are making printing methods quicker and more cost efficient. Inventors and innovators are able to print low-cost and complex geometries rapidly as a result of the manufacturing time being reduced from weeks to hours. With the large amount of polymeric...master thesis 2018
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Abhishek, Abhisek (author)Recognizing climate change as a result of more than 150 years of industrial activity, and due to the emission reduction protocols set internationally, wind energy has become the mainstream source of energy for many developed nations. Due to the prospect of large scale energy generation, wind energy has moved offshore. Offshore wind farms are...master thesis 2018
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Brummel, Salomon (author)In the field of fatigue testing in laboratory conditions, the common practice is uniaxial testing (i.e. in tension). The real-life loads on structures are usually not limited to one direction but contain multiaxial components. For this kind of testing, the ship and offshore structures department of Delft University of Technology developed a...master thesis 2018
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Vogel, Maarten (author)The hybrid monopile is a substructure concept for offshore wind turbines initially designed and developed by Fistuca B.V. This Thesis is about the initial concept design of the connection details in the hybrid monopile. Several concept connections are designed. The best concept is selected and thereafter assessed on the ultimate limit state,...master thesis 2018
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Abrahamse, Marijn (author)Fatigue crack monitoring is essential to Ship and Offshore structures, in order to guarantee structural integrity and safety on board. Regular inspections, which are currently performed manually are hazardous, costly and infrequent. The CrackGuard JIP has the goal of developing a system for reliable monitoring of fatigue cracks based on the...master thesis 2018
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Bobeldijk, Mark (author)In general, damage models for Fibre-Reinforced Polymers (FRPs) can be divided into two categories: Continuum Damage Models (CDMs) and Fracture Mechanics Damage Models (FMDMs). Damage models within each of these categories are advantageous for different type of failure mechanisms. Therefore, it is of interest to develop a unified framework in...master thesis 2018
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Cederløf, Daan (author)A numerical fatigue delamination model is validated by means of experimental tests. Delamination is initiated on the skin-stiffener interface which, under cyclic compressive loading and in the post-buckling regime, grows at a decreasing rate. A cohesive zone formulation is used to model the static and fatigue delamination growth, good agreement...master thesis 2018
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Salih, Rahel (author)A method has been developed with which the rigid-body motions, stress and fatigue damage response of a TLP-type FOWT are determined in time domain, with the aim of assessing the influence of non-linear hydrodynamic response on the fatigue damage. The dynamics are described by means of a system of coupled 6DOF-EoMs and solved in Matlab, after...master thesis 2018