Searched for: contributor%3A%22Teuwen%2C+Julie+J.E.+%28mentor%29%22
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Wu, Chun-Yen (author)
The increasing focus on sustainable living and the need to reduce dependency on fossil fuels has led to a growing interest in renewable energy sources. Among these, the wind energy sector has not only experienced significant growth in terms of numbers but also in size. Larger turbines lead to more severe leading-edge erosion and further increase...
master thesis 2023
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Iványi, Charlotte (author)
Laser-assisted fiber placement (LAFP) is a promising manufacturing process for thermoplastic composites (TPCs), which enables out-of-autoclave production and eliminates post-consolidation steps. In LAFP, thermoplastic carbon fiber tapes are heated with a laser heat source and placed into the desired layup with the help of a robot, while being...
master thesis 2023
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John Vaseekaran, Saran (author)
Leading Edge Erosion is a major concern for the wind energy industry as it affects the aerodynamic efficiency of wind turbine blades and, therefore, the power generated. Hail impact on the leading edge could significantly damage the protective layer and the composite substrate. The focus of this research study is to investigate the effect of...
master thesis 2023
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de Vos, Camill (author)
While aramid fibre composites are generally said to have excellent impact properties, this has not yet been translated to the aerospace sector, where impact prone secondary structures remain to be made from metals or glass fibre reinforced polymer. Aramid fibre reinforced engineering thermoplastics could combine the stiffness of thermoset resins...
master thesis 2022
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Savana, Reshab (author)
The growing demand for renewable energy has led to significant developments in wind turbine technology. The ever increasing size of turbine blades and their exposure to a variety of environmental factors can affect their annual energy production and service life. Erosion caused by rainfall and hailstones is identified as two of the most...
master thesis 2022
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Hamers, Tristan (author)
Operating turbines suffering from leading edge erosion (LEE) experience significant (up to 5%) annual energy production (AEP) loss and require expensive maintenance campaigns. Evaluation of state-of-the-art coating systems relies on rain erosion testing (RET) with no accepted method for the computational evaluation of the coatings lifetime. In...
master thesis 2022
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Blommert, Yannick (author)
Laser-assisted automated fiber placement (LAFP) is a promising additive manufacturing technique for the production of large aerospace components. Thermoplastic prepreg tapes will be placed ply-by-ply on top of a mould and in-situ consolidated. This is beneficial for higher production rates. The mechanical performance of thermoplastic composite...
master thesis 2022
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Zaaijer, Floris (author)
Mechanical air entrapment, void compression and void dissolution are the main mechanisms behind void formation in liquid composite molding. Mechanical air entrapment is induced by the highly non-uniform geometry at the meso- and micro-scale and the heterogeneous properties of the reinforcing material. This results in differences in the velocity...
master thesis 2021
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Eryörük, Huseyin (author)
Green energy is becoming more important over the years in order to reduce CO₂ emission. One way to obtain green energy is transferring wind energy to electricity with wind turbines. The operation life of wind turbines are commonly between 20 and 25 years, but this is reduced by hail erosion. Experimental test have been performed to understand...
master thesis 2021
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Schmies, Leonard (author)
Carbon fibre reinforced plastics offer various options to improve structures made from conventional materials such as metal. Carbon fibre reinforced plastics are used increasingly in various sectors such as the aerospace, automotive or sports industry. As carbon fibre reinforced plastics are less damage tolerant as metals due to the brittle...
master thesis 2021
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Alonso Diaz, Miguel (author)
Rain erosion of leading edges in wind turbines caused by high-velocity droplet impacts is one of the current problems in wind energy that affects their energy production and maintenance costs. The most widespread solution for this problem is the application of viscoelastic coatings (generally, polyurethane) along the leading edge of the wind...
master thesis 2021
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Bussink, Tom (author)
L-AFP is able to place composite tapes in very precise directions, thereby allowing tailored stiffness designs. The laser is used to heat the thermoplastic matrix material to temperatures above its melting point. CF/PEEK is a popular choice for aerospace grade structures due to the high structural performance and high glass transition and...
master thesis 2021
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Pernitsky, Cole (author)
master thesis 2021
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van Loon, Tom (author)
The aim of this study is to analyse the influence of ply drop-off regions and related parameters on the VARTM cure-induced residual stress generation and related distortions within thick thermoset composites. These parameters include the resin pocket material properties and geometry, ply orientations and cure cycle parameters. By means of a...
master thesis 2021
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van 't Laar, Vincent (author)
In the past decades extreme weather events have become more common as a result of climate change, which is brought on by the increasing concentrations of greenhouse gasses in the atmosphere. Climate change and sustainable development are motivators for the research topic of this thesis, since the prevention of a climate crisis is favourable to...
master thesis 2020
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Baust, Sebastian (author)
In this thesis the influence of the geometrical and structural rotor blade properties on the pitch bearing loads and deformations is investigated by developing a scalable finite element rotor blade model in Ansys Classic and analyzing the impact of different blade designs. The research aim of this thesis is to determine blade properties which...
master thesis 2019
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Verheul, Harm (author)
To achieve the goals set in the Paris agreement, it is required to replace fossil energy by renewable energy. One source of renewable energy, also used extensively at the start of the industrial revolution, is the wind. The cost of wind energy might be reduced by building split wind turbine blades. In this thesis, three main subjects related to...
master thesis 2018
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Baharvand, Amir (author)
Delamination is one of the common failure types in the fiber composites. The trailing edge in the wind turbine blades, for example, is one of the structural components where the delamination is driven by mode III under predominantly flapwise loading. There has been an extensive effort in developing test procedures and test specimens for...
master thesis 2018
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Alleman, Guyonne (author)
A composite wind turbine blade is partially thick-walled to comply with high strength criteria. When the manufacturer’s recommended cure cycle (MRCC), which is designed for thin-walled components, is used for thick-walled components it can lead to high levels of residual stress. This experimental research investigates different cure cycles for...
master thesis 2018
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