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Ritsma, Folkert (author)
Performance of set based fault detection is highly dependent on the complexity of the set bounding methods used to bound the healthy residual set. Existing methods achieve robust performance with complex set bounding that narrowly define healthy system behavior, yet at the cost of higher computation times. In this thesis a major improvement is...
master thesis 2019
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Zhao, Dong (author), Lenz, Thomas (author), Gelinck, Gerwin H. (author), Groen, W.A. (author), Damjanovic, Dragan (author), de Leeuw, D.M. (author), Katsouras, Ilias (author)
Depolarization in ferroelectric materials has been studied since the 1970s, albeit quasi-statically. The dynamics are described by the empirical Merz law, which gives the polarization switching time as a function of electric field, normalized to the so-called activation field. The Merz law has been used for decades; its origin as domain-wall...
journal article 2019
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Zhao, Yuan (author), Alderliesten, R.C. (author), Wu, Zengwen (author), Zhou, Zhengong (author), Fang, Guodong (author), Zhang, Jiazhen (author), Benedictus, R. (author)
Finite-width-correction factors (FWCF) are required for GLARE to accurately predict fatigue crack growth using linear elastic fracture mechanics. As demonstrated in earlier work, these factors effectively correct for the change in specimen compliance, which in GLARE relates to intact fibre layers and the formation of delaminations between...
journal article 2019
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Bechtle, Philip (author), Schelbergen, M. (author), Schmehl, R. (author), Zillmann, Udo (author), Watson, S.J. (author)
We compare the available wind resources for conventional wind turbines and for airborne wind energy systems. Accessing higher altitudes and continuously adjusting the harvesting operation to the wind resource substantially increases the potential energy yield. The study is based on the ERA5 reanalysis data which covers a period of 7 years...
journal article 2019
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Viegas Ochôa De Carvalho, Pedro (author), Fernandez Villegas, I. (author), Groves, R.M. (author), Benedictus, R. (author)
This article presents research about the propagation of ultrasonic guided waves in ultrasonically welded thermoplastic composite joints. The goal of the study was to understand the effect of weld manufacturing defects on guided wave transmission across the joint. Triangular energy-directors integrated into the lower composite adherends...
journal article 2019
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Sun, J. (author), Blom, H.A.P. (author), Ellerbroek, J. (author), Hoekstra, J.M. (author)
This article investigates the estimation of aircraft mass and thrust settings of departing aircraft using a recursive Bayesian method called particle filtering. The method is based on a nonlinear state-space system derived from aircraft point-mass performance models. Using only aircraft surveillance data, flight states such as position,...
journal article 2019
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Kraan, Oscar (author), Kramer, Gert Jan (author), Nikolic, I. (author), Chappin, E.J.L. (author), Koning, Vinzenz (author)
Full decarbonisation of the electricity system is one of the key elements to limit global warming. As this transition takes place, the electricity system must maintain system adequacy and remain affordable to consumers. In liberalised electricity markets investors are seen as key actors driving this transition. Due to the intermittent...
journal article 2019
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Ronchini Ximenes, A. (author)
Constant increase in data processing efficiency has enabled, among many other things, the intensive use of depth mapping technologies. Consumer applications, such as gaming, augmented and virtual realities (AR/VR), and other human-machine interfaces, are typically based on intensive image processing, either by triangulation and/or structured...
doctoral thesis 2019
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Giammarino, Vittorio (author)
This thesis provides a theoretical framework for the arise of stop-and-go waves in platoons of Human-driven Vehicles (HVs) on a ring road topology. Possibilities and limitations for traffic control and suppression of such waves via a single Autonomous Vehicle (AV) are considered. Being HVs prone to show string instability, i.e. a type of...
master thesis 2019
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Roy, A. (author)
The analytical expressions for the ultimate load bearing capacity of the RC structures do not provide the generalized notion of ultimate load bearing capacity, which can be obtained through nonlinear finite element analysis (NLFEA). In order to obtain an accurate estimate of failure probability of a RC structure it is necessary to use NLFEA...
doctoral thesis 2019
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Bouquet, G.C. (author)
For the dimensioning of concrete structures it is customary to determine the forces and stresses occurring in construction elements on the basis of the prescribed loads. In an iterative process, the final dimensions of the elements and reinforcement are then determined. This process becomes less simple if not only the external loads, but also...
doctoral thesis 2019
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Kruisdijk, Wies (author)
The goal of this report is to study the way in which female university students (aged 18 to 25) deal with their moods during their menstruation, and to use this information to design a product to help them deal with their negative moods in a healthy way, by using resilience-focused mood-regulation strategies. Literature research and the field...
master thesis 2019
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Khajeh Salehani, M. (author)
The main objective of this thesis is to obtain a better understanding of adhesive contacts and their frictional behaviour. Both natural and man-made surfaces are rough over a wide range of length scales. Tribological studies of rough surfaces need to account for the interactions between these asperities. In this work a sim- ple atomistically...
doctoral thesis 2019
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El Doori, Isa (author)
The ability to locate specific objects within images is an essential step in various computer vision based engineering applications. Image segmentation is the task of dividing an image into "segments" that are uniform as well as homogeneous with respect to some characteristics, for example grey tone or texture as in Haralick et al. This thesis...
master thesis 2019
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Torres Guijarro, Ana Isabel (author)
The current needs of sustainable mobility lead to the electrification of transport industries, which require innovative products. The use of fuel cell electric vehicles (FCEVs) on a commercial basis depends on the development of hydrogen storage devices, which must be reliable and cost-effective. For the design of high safety composite pressure...
master thesis 2019
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Baert, Matthias (author)
A fault-tolerant controller is presented that is able to recover a quadrotor from an upset condition in the case of a single rotor failure. With only 3 rotors the quadrotor is not fully controllable anymore, however by using precession the quadrotor can be made controllable again in roll and pitch. A step-by-step recovery strategy is proposed in...
master thesis 2019
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Cabrall, C.D.D. (author)
This PhD thesis document is a collection of several of my published (and submitted) peer review journal articles from underneath the Human Factors of Automated Driving (HF Auto, PITN-GA-2013-605817) seventh framework program (FP7) of the European Commission. The topics include: human factors, automotive road safety, autonomous/automated driving...
doctoral thesis 2019
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Bouwman, Dennis (author)
Using an idealized width-averaged model, the influence of spring-neap cycles on the transport and trapping of suspended fine sediment in tide-dominated estuaries is investigated. To this end we introduce a multiple time scale expansion. This provides a mathematically sound argument for treating the fast ebb-flood cycle and the slow spring-neap...
master thesis 2019
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van der Sommen, Régis (author)
Using a data-driven approach, a heterogeneous populated agent-based model of an airport security checkpoint is calibrated and validated. It is found that average performance using the model can be replicated to a sufficient degree. The heterogenous population could become useful when different passenger fractions - with different performance per...
master thesis 2019
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YANG, MINGHAO (author)
One-Shot Neural Architecture Search (NAS) is a promising method to significantly reduce search time without any separate training. It can be treated as a Network Compression problem on the architecture parameters from an overparameterized network. However, there are two issues associated with most one-shot NAS methods. First, dependencies...
master thesis 2019
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