Searched for: subject%3A%22separation%22
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Kawasaki, S. (author)
CMUTs (Capacitive Micromachined Ultrasonic Transducers) are causing a technological revolution. Research over the last decade showed that CMUTs can sufficiently replace traditional ultrasound technology based on the bulk PZT, along with other benefits such as lower assembly cost, broader bandwidth and monolithic integration capability with ASICs...
doctoral thesis 2024
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Malladi, Avyadhish (author)
This thesis project focuses on the evaluation of the Extended Finite Element Model (XFEM) for modelling skin-stringer separation in thermoplastic composite stiffened panels. The study uses test results from a reference study in the literature on a PEKK-FC carbon composite panel with three stringers joined to the skin using a short-fibre...
master thesis 2024
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Hoekwater, William B. (author), Ronaes, E.P. (author), Hassan HosseinNia, S. (author)
Recent studies have shown that tunable magnets (soft permanent magnets) can significantly reduce Joule heating in electromagnetic actuators. To achieve high motion accuracy and repeatability, this article proposes a novel actuator design with a linearized force-flux relation. In prior designs of variable reluctance tunable magnet actuators,...
journal article 2024
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Luan, Liping (author), Shi, Puxin (author), Wang, Zhi (author), Kapteijn, F. (author), Liu, Xinlei (author)
Novel membrane materials for H<sub>2</sub> separation are wanted. How to overcome the “trade-off” between membrane permeability and selectivity is a tough challenge. Here we report new random organic framework membranes with benzimidazole and imine linkages to form hierarchical channels. Both high H<sub>2</sub>-selective and fast H<sub>2</sub...
journal article 2024
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He, P. (author), Moreira Arouche, M. (author), Koetsier, M. (author), Pavlovic, M. (author)
Debonding is characterized as the governing failure mode in the innovative wrapped composite joints made with glass fiber composite material wrapped around steel hollow sections without welding. The prerequisite for predicting debonding failure of wrapped composite joints is to obtain fracture behavior of the composite-steel bonded interface....
journal article 2024
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Stella, F. (author), Della Santina, C. (author), Hughes, Josie (author)
The control possibilities for soft robots have long been hindered by the need for reliable methods to estimate their configuration. Inertial measurement units (IMUs) can solve this challenge, but they are affected by well-known drift issues. This letter proposes a method to eliminate this limitation by leveraging the Piecewise Constant...
journal article 2024
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Mertens, C. (author), Grille Guerra, A. (author), van Oudheusden, B.W. (author), Fehrs, Michael (author), Ritter, Markus R. (author)
The effects of the wing skin distortion on the boundary layer of a highly flexible wing are analyzed in a wind tunnel experiment using infrared thermography measurements. Considerable differences in the boundary layer flow are observed when comparing the sections of the wing near the ribs, where the design shape of the wing is preserved, and...
book chapter 2024
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Jankovic, T.J. (author), Straathof, Adrie J.J. (author), McGregor, Ian R. (author), Kiss, A.A. (author)
Distillation is the most used separation technology at industrial-scale, but using distillation in bio-based processes (e.g. fermentation processes to produce bioethanol) is quite challenging when mild temperatures are needed to keep the microbes alive. Vacuum distillation can be used to perform evaporation at low temperatures, but setting a...
journal article 2024
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González Romero, Andrea (author)
As the space industry continues to grow rapidly, the development of reusable launch vehicles has become crucial in achieving cost-effective and sustainable access to space. Payload capacity optimisation has been at the forefront of this effort, leading to a renewed interest in hammerhead or bulbous payload fairing (PLF) configurations. These...
master thesis 2023
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Artz, Laura (author)
Objective:<br/>This pilot study aims to assess the environmental impact of Positron Emission Tomography/Computed Tomography (PET/CT) imaging, in the context of efforts to mitigate climate change. This is studied by investigating the energy usage, waste generation, and the radiopharmaceutical production.<br/><br/>Methods:<br/>Power measurements...
master thesis 2023
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van der Lingen, Annick (author)
This study aims to explore the impact of employee separation as a result of hybrid working on the organisational commitment of ORGANISATION X’s workforce. The findings of this research aim to offer valuable insights to ORGANISATION X's understanding on how the alternating remote and in-office work setup may influence the commitment levels of...
master thesis 2023
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Parissi, Nicholas (author)
This work deals with the techno-economic assessment of Hydrogen production from waste-derived syngas coming from a large-scale gasifier. This research was developed for the purpose of converting nonrecyclable waste using a patented gasification technology to meet the demand for cleaner fuels, reducing global carbon emissions in line with the...
master thesis 2023
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den Ouden, Nika (author)
This graduation project focuses on the problem of solid waste, specifically passenger waste at Schiphol Airport. The project aimed to enhance passenger separation behaviour to reduce the amount of residual waste that would be incinerated. <br/><br/>The project began by exploring the FF3 bin's context, including its attributes, pilot tests, waste...
master thesis 2023
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de Fuijk, Dirk (author)
Adequate modeling of the unsteady aerodynamics during flow separation is critical for effective pilot training in Flight Simulation Training Devices. Over the years, a stall modeling method rooted in Kirchhoff's theory of flow separation has gained popularity due to its relative simplicity and suitability for parameter identification from flight...
master thesis 2023
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Grevet, Camiel (author)
The utilization of water electrolysis for hydrogen production is expected to increase significantly in the upcoming decades. Modular system design offers great advantages for emerging markets, whilst providing the necessary flexibility in capacity that intermittent renewable energy sources require. Literature research reveals little information...
master thesis 2023
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Kootte, Lucas (author)
A building block pyramid is designed used to evaluate a composite aircraft structure, combining tests and analyses, using stiffened panels, single-stringer specimens and coupons. Failure in these structures can be caused by postbuckling-induced skin-stringer separation, which is complex, involving matrix cracks, fibre bridges, and delamination...
doctoral thesis 2023
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Budanko, Toma (author)
An experimental investigation is presented in which an array of pulsed jet actuators is used to control a turbulent separation bubble formed on a curved backward facing ramp. The array is positioned upstream of detachment and consists of wall-normal high aspect ratio skewed rectangular jets which generate streamwise vortices in the boundary...
master thesis 2023
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KINDYNIS, Chrysanthos (author)
In this paper, we tackle the problem of creating decision trees that are both optimal and individually fair. While decision trees are popular due to their interpretability, achieving optimality can be difficult. Existing approaches either lack scalability or fail to consider individual fairness. To address this, we define individual fairness as...
bachelor thesis 2023
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Formidabile, Martina (author)
TOP contoured nozzles, with large area-ratios, are commonly employed in rocket propulsion systems as they feature an excellent thrust-to-weight ratio. A significant shortcoming to this design is that, during the startup and shutdown transients of a LRE, the internal nozzle flow progresses through a series of overexpanded flow states - Free Shock...
master thesis 2023
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van Kouwen, Mathijs (author)
In existing standards for photovoltaic (PV) plants, little guidance is provided in the spatial allocation of pyranometers. No universal and easily scalable algorithms exist that help designers of monitoring infrastructure in solar parks choose the most representative positions for irradiance sensors. <br/><br/>To fill this gap, a software tool...
master thesis 2023
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