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Martinez Fornos, Carlos (author)We perform a study on acoustic metasurfaces, aiming to achieve simultaneously low resonance frequencies (below 400 Hz), high attenuation bandwidth (greater than 200 Hz), and high attenuation coefficient magnitudes (above 0.8), while maintaining a surface-like structure.<br/>We propose the implementation of geometrical optimization through...master thesis 2024
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Wassenaar, Maurits (author)Mechanical forces are integral to the functionality and behavior of biological systems, from the cellular to the molecular level. Acoustic force spectroscopy (AFS), an emerging field, seeks to explore these intricate dynamics. Traditional methods in AFS, particularly those using bulk acoustic wave (BAW) devices, still lack sample visibility and...master thesis 2023
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Jaarsma, Ruurd (author)Echosounders are used to monitor suspended sediment concentrations (SSC) in coastal management studies and to monitor dredge plumes. Due to the dependency on sediment properties like particle size, shape and density, performance of single frequency measurements is limited when sediment properties are changing.<br/><br/>Using multi-frequency...master thesis 2023
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Bieling, Thijs (author)Evaporation can induce acoustic emissions in microfluidic devices. The origin of these emissions and their damping remains elusive. This thesis studies acoustic emissions from 3D printed microfluidic tubes mimicking xylem vessels in plants. We show the time and frequency domain signature of these emissions. From these signatures, we identify...master thesis 2022
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de Wildt, Arjan (author)The goal of this study is to develop a measurement setup that can accommodate the water-cooled modules present in the innovative e-beam lithography tool developed by Mapper Lithography and to perform flow verfication measurements on them. The overall objective is to verify the stage-stability requirements set for the Matrix-machine with regards...master thesis 2021
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Dullaart, Bob (author)On land, localization or ranging is typically performed by using electromagnetic waves. In an underwater environment, this becomes difficult, as electromagnetic waves dampen out fast. As a solution often acoustic waves are used to perform localization. Because of the complexity of underwater acoustic propagation, an acoustic propagation model is...master thesis 2020
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Horck, Mats (author)Exposure to excessive community noise has become a large environmental health concern. Noise pollution continues to increase while it is accompanied by direct, as well as cumulative adverse health effects. In addition, prolonged exposure to excessive noise levels also has a negative economic impact. The incorporation of numerical tools in the...master thesis 2020
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Bruinsma, Simme (author)Everybody knows concrete.... the building material that ones meant the future. Imagine it’s most extreme forms. I’m thinking of Sovjet concrete sculptures! Brutalist Architecture! And then think about what it would take to break parts of these adement concrete structures down. That is what this project is all about. <br/>Welcome to ‘A Concrete...master thesis 2018
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van Weeghel, David (author)The Heritage and Architecture graduation studio 2016-2017 explores the possibilities of industrial heritage in the harbour of Rotterdam. This involves dealing with large scale buildings that have been abandoned due to the movement of the industrial activity from the harbour of Rotterdam to the Tweede Maasvlakte. This thesis entails a redesign...master thesis 2018
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van der Werf, Bas (author)This graduation project started as a continuation of an earlier design project. The design team Bdot, a group of students from the TU Delft, made a concept design for the company Merford. After the success of the Bdot concept, Merford was inspired to continue development further to a high fidelity prototype or even production. The open workspace...master thesis 2017
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Lampadiari Matsa, Antigoni (author)The topic of this graduation project is the design of an adaptive fabric façade for a high-rise in Paris. The stimulus for this choice was the turn of nowadays towards lightweight materials and constructions, a trend that is growing tremendously. Glass façades always remain popular and are frequently used in all kinds of buildings. For instance,...master thesis 2017
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Gommer, B. (author)This research aims at improving the performance of Helmholtz resonators by adding resistance using additive manufacturing. Current use of Helmholtz resonators is focused on tonal applications and modal issues, because of the frequency specific behaviour. A normal Helmholtz resonator curve has a decreasing bandwidth when the peak increases. The...master thesis 2016
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Niesten, J. (author)In a research of the World Health Organization (2011) it is shown that environmental noise is number two on the list of health risks. Environmental noise is linked to certain health conditions ranging from annoyance to heart attacks and is caused by the growing number of noise sources in the urban environment. An important aspect influencing the...master thesis 2016
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Huizinga, G.C.A. (author)During this last half year this thesis was executed in order to obtain a clear and scientific underpinned exploration of what interferences in an office environment are and how they can be reduced. As a result of combining the performed literature study, internal analysis, and external analysis a new product proposal is developed: the Bay A...master thesis 2015
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Vlaun, N.J.V. (author)Over the last two decades, there has been an increase in Europe in modern non-territorial offices with large open work environments. Past research has shown that a large number of workers in these offices suffer from lack of privacy and from noise. Noise is identified as a root cause of these problems and often poses the most severe indoor...master thesis 2015
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Channa, V.V. (author)Open rotors are considered to have the potential to improve the fuel economy of aircraft significantly by improving the propulsive efficiency compared to the current generation turbofan engines. One of the possible configurations for the open rotors is the aft fuselage mounted contra-rotating pusher propeller. The aftfuselage mounted contra...master thesis 2015
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De Blok, S. (author)Airports in The Netherlands are subjected to tangent environmental laws to restrain pollution and noise nuisance. Amsterdam Airport Schiphol (AAS) is one airport dealing with this regulatory framework but nevertheless they are resolute to continue growth with respect to aircraft movements. To cope with the law related to aircraft noise, the...master thesis 2015
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De Groot, P.H. (author)The Parallel Seismic (PS) test is a non-destructive test that is used to determine the depth of foundations. This thesis explores the use of the PS method to detect flaws in in-situ constructed foundation piles as an alternative to existing testing methods. An acoustic signal is introduced to the head of the pile with a hammer. An elastic wave...master thesis 2014
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- Louwerens, G.B. (author) master thesis 2014
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Soru, M. (author)Conventional buildings and structures are not designed usually for adapting to contextual aspects and needs: an instant adaptation of building systems by different configurations can result in an instant adaptation to these needs. The research is here applied for the design of an adaptive acoustic ceiling for a multi-purpose theatre. High real...master thesis 2014
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