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Ranjan, R. (author)With the advent of Additive Manufacturing (AM) techniques, the design principle of `form follows function' no longer remains a utopian proposition. The unprecedented design freedom offered by AM is making it possible to conceptualize highly performant designs by efficiently leveraging geometrical complexity. The increase in design freedom...doctoral thesis 2023
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Ranjan, R. (author), Chen, Z. (author), Ayas, C. (author), Langelaar, M. (author), van Keulen, A. (author)Overheating is a major issue especially in metal Additive Manufacturing (AM) processes, leading to poor surface quality, lack of dimensional precision, inferior performance and/or build failures. A 3D density-based topology optimization (TO) method is presented which addresses the issue of local overheating during metal AM. This is achieved...journal article 2023
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MERA, KRISTIAN (author)The unprecedented increase in mean ambient temperature due to immoderate CO2 emissions has shifted the energy policy towards the replacement of fossil fuels with renewable energy sources. Nevertheless, the intermittency of these technologies renders them unsuitable for reliable energy supply. A prominent solution is the utilization of renewable...master thesis 2022
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Ferrero, Riccardo (author), Androulakis, Ioannis (author), Martino, Luca (author), Nadar, R.A. (author), van Rhoon, G.C. (author), Manzin, Alessandra (author)The evaluation of the biological effects of therapeutic hyperthermia in oncology and the precise quantification of thermal dose, when heating is coupled with radiotherapy or chemotherapy, are active fields of research. The reliable measurement of hyperthermia effects on cells and tissues requires a strong control of the delivered power and of...journal article 2022
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Martin, H.A. (author), Sattari, R. (author), Smits, E.C.P. (author), van Zeijl, H.W. (author), van Driel, W.D. (author), Zhang, Kouchi (author)With an increasing demand for high-power electronics, the need to meet stringent automotive norms and better understand the critical failure mechanisms are crucial in order to improve their reliablity. To that end, we developed an in-situ reliability monitoring setup capable of actively measuring the thermal performance of the package during...conference paper 2022
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Zhong, Yaqian (author)As a type of powder-bed-based Additive Manufacturing (AM), Selective Laser Melting (SLM) is widely used for building metallic lattice structures. However, during SLM process, geometrical imperfections and defects, such as strut over-sizing or under-sizing, typically exist in components due to overheating, which strongly influence their...master thesis 2021
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Janjua, Mahad Nadeem Janjua (author)The recent discovery of the Zama field in offshore Sureste Basin in the southern Gulf of Mexico has piqued interest in the Mexican petroleum industry regarding the hydrocarbon potential within the region. In this study, a deposition-only thermal model was developed in an area of interest (AOI) in this region. Using structural input obtained from...master thesis 2021
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Gartner, Niels (author)Submarines face an ongoing (technical) battle to improve the operational effectiveness by increasing the submerged endurance and range. Installing lithium-ion batteries on new or refitted diesel-electric submarines has become increasingly interesting based on their relatively high energy density and specific energy. The characteristics compared...master thesis 2021
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Schreurs, Rutger (author)Wire Arc Additive Manufacturing (WAAM) is a manufacturing technique with the ability to produce large metal parts with relatively complex geometrical shapes. One obstacle limiting full exploitation of WAAM in the industry is uncertainty on the mechanical properties of manufactured parts. Mechanical properties are strongly influenced by the...master thesis 2021
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He, Yingdong (author), Zhou, Yuekuan (author), Wang, Zhe (author), Liu, Jia (author), Liu, Z. (author), Zhang, Guoqiang (author)Hydrogen-based (H<sub>2</sub>-based) interactive energy networks for buildings and transportations provide novel solutions for carbon-neutrality transition, regional energy flexibility and independence on fossil fuel consumption, where vehicle fuel cells are key components for H<sub>2</sub>-electricity conversion and clean power supply....journal article 2021
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van den Berg, Peter (author)The Dutch/New Zealand based aerospace company Dawn aerospace has developed a 0.5N green bi-propellant propulsion system for use in CubeSat applications called the PM200. This thruster uses gaseous nitrous oxide and propylene as propellants. Currently, the burn time of this thruster is limited to 10 seconds after which cool down of the thruster...master thesis 2020
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de Mooij, Cas (author)As the world is trying to rely less on fossil fuels for electrical energy. To do this, the alternatives should be as efficient and durable as possible. The alternative that has been growing the fastest in recent years is solar energy. Apart from it’s growth in the market share, the efficiency of photovoltaic (PV) cells has also steadily grown....master thesis 2020
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Vattis, Kyriakos (author)The residential and service sectors are responsible for the 39% of the total energy consumption. 80% of this energy is used for heating purposes. Achieving nearly zero energy buildings is a major goal for the near future. The design of an integrated electrical and thermal system can substantially help to reach such objective. The façade is the...master thesis 2020
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Frantzi, Georgia (author)Building energy consumption is one of the highest of any sector. Building integrated Photovoltaics (BIPV) have the potential to eventually contribute to 50%-70% of the total energy demand. However, one of the main barriers that hinder the acceptance of solar energy systems as an integrated part in the buildings’ envelope is the limited...master thesis 2020
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Yang, Y. (author), van Keulen, A. (author), Ayas, C. (author)Selective laser melting (SLM) is a widely used additive manufacturing method for building metal parts in a layer-by-layer manner thereby imposing almost no limitations on the geometrical layout of the part. The SLM process has a crucial impact on the microstructure, strength, surface quality and even the shape of the part, all of which depend on...journal article 2020
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Bilgin, Berker (author), Liang, Jianbin (author), Terzic, Mladen V. (author), Dong, J. (author), Rodriguez, Romina (author), Trickett, Elizabeth (author), Emadi, Ali (author)This paper presents a comprehensive state-of-the-art review of the modeling and analysis methods for the multidisciplinary design of electric motors for various applications including vehicular power and propulsion systems and electrified powertrains. It covers the important aspects of different engineering domains, such as dynamic modeling,...journal article 2019
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Breukelman, Hubert (author)Laser surface treatments offer interesting prospects for the creation of architectured microstructures formed by distinct phases in metastable austenitic steels. In the present study, a laser-based localised heat treatment was developed to locally create an austenitic region in a quenched Fe25Ni0.2C martensitic microstructure. The highly...master thesis 2019
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He, Xuanmin (author)The Nobel Prize in Chemistry in 2017 went to the development of cryo-electron microscopy, which contributed to the discovery of new cells and viruses, the diagnosis of unknown diseases, the mapping of human genomes and the manufacturing of semiconductors. Cryo Correlative light and electron microscopy (Cryo-CLEM), is the combination of using...master thesis 2019
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Lin, Zidong (author)In recent years, Wire and Arc Additive Manufacturing (WAAM), is gaining attractions both from academia and industry, because it has the potential to substitute or complement the traditional manufacturing methods. Traditional materials and methods are reaching their limitation when demanding and special applications are considered.<br/><br/>The...master thesis 2019
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Sun, B. (author), Fan, J. (author), Fan, Xuejun (author), Zhang, Kouchi (author), Zhang, Guohao (author)In this paper, a physics of failure-based prediction method is combined with statistical models to consider the impact of current crowding and current droop effects on the reliability of LED arrays. Electronic-thermal models of LEDs are utilized to obtain the operation conditions under the influences of current crowding and current droop. A...journal article 2019
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