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Tjeerdsma, Michiel (author)Reducing greenhouse emissions can be achieved by better insulating buildings. However, wall thickness increases significantly if conventional insulation materials are used. Conventional vacuum insulation panels (VIPs) offer a solution to this problem. VIPs have potential, but can not compete with conventional insulation materials due to their...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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Maas, Wietske (author)In conventional aircrafts, lift control is achieved by using flap systems. It would be beneficial if flap systems could be replaced by a variable-camber morphing wing. It has been shown that variable-camber morphing wings can significantly improve the aerodynamic performance of the aircraft due to the smoothness of the surface, making it...master thesis 2021
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Malik, Naseem (author)Magnets for High Energy Physics applications built to date are generally superconducting magnets, which operate at cryogenic temperatures. The reliability and safety of the applications are entirely dependent on good design which in turn rely heavily on predictable materials performance. Where at these low temperatures the fracture toughness is...master thesis 2021
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Numić, Armin (author)Bistable vibration energy harvesters are an interesting alternative to their linear counterparts. They allow for large amplitude oscillations between their stable equilibria, from which much energy can be generated. However, the stable equilibria are separated by a potential energy barrier that has to be overcome. Therefore, we cannot guarantee...master thesis 2021
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Bakker, Coen (author)Stiffened shells and plates are widely used in engineering, but their performance is highly influenced by the arrangement, or layout, of stiffeners on the base shell or plate and the geometric features, or topology, of these stiffeners. Moreover, structures with modules are beneficial, since it allows for increased quality control and more...master thesis 2020
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Janssens, Yannick (author)In this thesis, a methodology is developed that allows for both reliable and computational efficient robustness analysis of aircraft component distortion. This research applies to dis- tortion caused by reductive manufacturing processes that are used to obtain monolithic components from pre-stressed stock material. With the developed methodology...master thesis 2019
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van Gemert, Sander (author)When drilling for oil or gas, wells are typically constructed using a conventional or telescopic well design. After a section of the well has been drilled, a steel casing (or liner) is inserted into the hole preventing the collapse of the hole. The next well section has a smaller diameter as it’s casing must pass through the previously installed...master thesis 2017
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Smorenberg, P.G.J. (author)Optical systems in high precision equipment become increasingly more complex due to the raising number of optical mounts used for mounting and positioning of optical components. Additional, the installation of electronics and inert gas purging systems to protect the optics against the abrasive optical beam extends the amount of components in the...master thesis 2017
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Stolk, M. (author)Since its introduction, Topology Optimization (TO) has been applied to a broad range of design cases. TO is a material distribution method which finds the optimal material lay-out for a given design space while upholding given constraints and boundary conditions. This has made the method popular in structural mechanics where it is used to find...master thesis 2017
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Wezenbeek, S. (author)During a rocket launch a spacecraft is, among other loads, exposed to a potentially damaging acoustic load. Prior to space flight, ground tests are performed to determinewhether a spacecraft, or a specific part thereof, can withstand the acoustic load. These tests take place in a reverberation chamber. An acoustic feedback control algorithm...master thesis 2016
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Ropia, P. (author)Turbochargers play an important role in increasing the fuel economy of passenger vehicles. With emissions standards getting stricter in Europe over the passing years, turbochargers have soared in popularity in the automotive industry. Due to increasing competition in the market place, manufacturers have had to optimize each of the sub-systems of...master thesis 2016
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Broekens, K.A. (author)Future high-energy physics demands higher magnetic fields to attain higher beam energies and thus needs novel superconductingmaterials in accelerator magnet applications. Current superconductors operate in the temperature range between 1.8 and 4.2 K and attain 8 T in modern operational machines. Meanwhile, prototypes have been built to operate...master thesis 2016
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- van der Schuur, D.Z. (author) master thesis 2016
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Van Leeuwe, K. (author)Much research has been done in the past couple of decades on the vibrations of rotating structures, such as helicopter and wind turbine blades. This is the consequence of ever increasing standards towards dynamic performance of these systems. Previous investigations have primarily dealt with constant rotational velocity, with a focus on the...master thesis 2016
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Theulings, E.C.A.S. (author)Deformable mirrors are widely used in adaptive optics to correct wavefront aberrations. Actuators are used to deform the mirror into the shape that is needed for this correction. The most common type of actuation is with out-of-plane actuators that are placed on the backside of the mirror surface. Actuation with in-plane actuators placed on the...master thesis 2015
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Van den Boom, S.J. (author)Buckling is a failure mode of a structure caused by stiffness loss of compressed material. It arises primarily in slender structures, for which the bending stiffness is much lower than the axial stiffness. Slender, buckling sensitive structures occur especially in optimised designs, where an excellent strength-to-weight ratio is required. For...master thesis 2014
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van de Ven, Emiel (author)Thermal error reduction is of major importance to the performance of any high-tech machine. Topology optimization can be a tool that is able to design geometries that reduce the thermal error, beyond human creativity. In this research, topology optimization is used to reduce the thermal error on a transient-thermal-mechanical problem. The...master thesis 2014
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Pasma, E.A. (author)A robust Transfer Path Analysis (TPA) procedure is presented to predict the transmitted vibrations of a steering gear in BMW vehicles in a multi-kHz range. The internal excitation forces are characterised as a set of equivalent forces on the interface of the active component. These equivalent forces are determined from force and acceleration...master thesis 2014
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Noorman, D.C. (author)Laminated composites is a material that is rapidly being adapted in the aircraft industry and new joining techniques are being researched for new structural designs. One such technique is adhesive bonding, which can result in decreased weight, fuel saving and improved strength of aircraft components. Robust strength and failure analysis methods...master thesis 2014