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Schagen, Roland (author)
The adoption of optimization algorithms has been slower in conceptual design compared to the later design phases. The choices made during the conceptual design phase have a large impact on the performance of the result. This research aims to find out why it is so hard to use optimization in conceptual design. Then a method is proposed to solve...
master thesis 2018
document
Zarifis, George (author)
The last decades Fiber Reinforced Polymer (FRP) structures start to find their own place in the field of civil engineering applications and quite lately in bridge engineering. Composites are considered highly versatile materials that offer great tailoring on their design. Synthetic fibers and resins are already quite popular especially in...
master thesis 2018
document
Hollebrandse, Julian (author)
The Netherlands policy on electricity steers towards a carbon neutral power generation in 2050. Among<br/>the studies that focus on long term power system research, none use the starting point of a 100%<br/>renewable power system in 2050. It is unknown if such a system is technically feasible given the<br/>variability of wind and solar. The...
master thesis 2018
document
Buist, Jan Willem (author)
In open-pit mining on a bench level, the dig-limit optimization problem is deciding whether to classify a Selective Mining Unit(SMU) as waste or whether to classify it as ore. SMU’s with high ore grades are profitable for the mining operation, but due to equipment size a whole frame of SMU’s has to be classified as either ore or waste. In this...
bachelor thesis 2018
document
van der Waal, Kaj (author)
An efficient production is essential for an economic continuation of most gold mining companies, due to a moderate gold price and a competitive market. Recently, the Ahafo South Mining operations owned by the Newmont Mining Corporation and located on a Proterozoic gold belt in the south west of Ghana, indicated that the cost of production must...
master thesis 2017
document
RODRIGUEZ LUNA, Rogelio (author)
Solar cells are showing significant promise to become the solution for the growing energy needs of our world. However for this to happen, new disruptive technologies with high efficiency and low cost are needed in the market. One possibility comes from multijunction thin film solar cells based on a-Si alloys and nc-Si. For this purpose a–SiO<sub...
master thesis 2017
document
Carzana, Livio (author)
When sunlight illuminates a body, a tiny pressure is exerted upon its surface due to the photons impacting on it. Such a principle forms the basis of solar sailing, in which the solar radiation pressure is used to accelerate highly reflective lightweight structures called solar sails. Similarly, a laser-enhanced solar sail is a solar sail in...
master thesis 2017
document
de Vries, Daniël (author)
Multidisciplinary Design Analysis and Optimization (MDAO) promises major advances in aircraft design. However, judging from todays aircraft, MDAO is clearly not fully embraced by the industry yet. This is due to technical difficulties (coupling incompatible tools) and non-technical barriers (intellectual property).<br/><br/>Recent research, such...
master thesis 2017
document
Inan, Alp (author)
In traditional networks, the network functions are implemented as physical appliances which are called middleboxes and these middleboxes need to be deployed in predetermined locations throughout the network. Therefore one of the most important disadvantages of using middleboxes is that each network function deployment requires a great deal of...
master thesis 2017
document
Luesutthiviboon, Salil (author)
This work aims to determine the optimal microphone placement on an acoustic array of TU Delft’s ‘V-tunnel’ which is used for beamforming in aero-acoustic studies. The beamforming performance is driven by two parameters; the Maximum Side lobe Level (MSL) and the Main Lobe Width (MLW). The array design should give a good trade-off between these...
master thesis 2017
document
Chawla, Hemang (author)
The development of domestic mobile manipulators for unconstrained environments has driven significant research recently. Robot Care Systems has been pioneering in developing a prototype of a mobile manipulator for elderly care. It has a 6 degrees of freedom robotic arm mounted on their flagship robot LEA, a non-holonomic differential drive...
master thesis 2017
document
Deckers, Rob (author)
Ammonia in aqueous environments leads to eutrophication and toxicity of the receiving water body (Metcalf &amp; Eddy, 2003). In order to prevent environmental pollution, ammonia needs to be removed from residual water streams, before the water can be discharged to the aqueous environment (Song et al., 2012). Waste water treatment plants (WWTPs)...
master thesis 2017
document
Qian, Weijun (author)
High frequency high voltage power supply has been widely applied in many industrial applications such as the medical X-ray machine and eletrostatic precipitators. As a part of the high frequency high voltage power supply, the electrical performances of the voltage multiplier circuit will influence the behaviors of applications like the X-ray...
master thesis 2017
document
Spronck, Tano (author)
the aim of this thesis is to regard all aspects concerning mass optimization with respect to small satellite structures and deployers, specifically aimed at the DelfiPQ PocketQube mission.
master thesis 2017
document
Arumugam, Senthil Kumar (author)
Low-grade heat sources are abundant on earth but are majorly untapped due to lower thermodynamic efficiency at low temperatures and cost considerations. A cost-effective technology is needed to convert this energy resource into useful forms of energy. This work aims at optimizing Organic Rankine Cycle (ORC) based heat engine and a cogeneration...
master thesis 2017
document
Menduiña Fernández, Alvaro (author)
Nowadays space missions rely heavily on optical payloads to carry out a wide range of tasks including earth observation, weather monitoring, astrophysics research and communications. Until recently, the design of such systems was done according to design principles such as rotational symmetry as it simplifies the theory, reduces technological...
master thesis 2017
document
Greco, Cristian (author)
Electric low-thrust propulsion has nowadays found wide application in space dynamics as it entails considerable savings in spacecraft propellant mass, thanks to the very high specific impulse that this kind of engine is able to generate. However, continuous thrust opens new extensive sets of feasible trajectories, and optimization algorithms are...
master thesis 2017
document
Di Campli Bayard de Volo, Giuseppe (author)
Given the current technological limitations, launch missions are extremely costly: rockets are huge, being about 100 times more massive than the payload, and most of the times expendable. The specific cost required to place a spacecraft in LEO is between 10 and 25 k€/kg. Consequently, trajectory optimization plays a major role in the design of a...
master thesis 2017
document
Galletti, Elena (author)
The increasing interest in solar electric propulsion techniques, that enable significant propellant mass savings for a wide class of transfers, has brought about a revolution in the approach to trajectory design and optimization, as a result of the complexity and diversity of the problem. To date, solutions of different nature exist, but...
master thesis 2017
document
Zhang, Jie (author)
Eddy currents are loops of electrical currents induced within conductors by varying magnetic field in the conductor. Eddy currents flow in the closed loops in the conductor, in planes perpendicular to the magnetic field. The eddy current effect plays an important role in the transformer or an actuator system. <br/>If there is a coil wound around...
master thesis 2017
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