Pages
- 1
- 2
- document
-
He, C. (author), Yang, Z. (author), Zhang, P. (author), Li, S. (author), Naeimi, M. (author), Dollevoet, R.P.B.J. (author), Li, Z. (author)Polygonal wear is a type of damage commonly observed on the railway wheel tread. It induces wheel-rail impacts and consequent train/track components failure. This study presents a finite element (FE) thermomechanical wheel-rail contact model, which is able to cope with the three possible generation and development mechanisms of polygonal wear...journal article 2024
- document
-
MOUZAKIDIS, DIMITRIOS (author), Puti Nabila Riyadi, Puti (author), Nestoras, Konstantinos (author), Xu, Leon (author), Liu, Na (author), Köbben, Stein (author)Modern navigation heavily relies on Global Navigation Satellite Systems (GNSS) and digitized road network databases, but faces limitations in GNSS-denied areas and complex 2D road netowrks. This project addresses these challenges by developing a methodology to create and store a comprehensive 3D road and terrain dataset for enhanced navigation....student report 2023
- document
-
Zhang, Fengyan (author)Geometric algorithms are usually designed based on the assumption of using arbitraryprecision representations. However, in modern computer systems floating-point arithmetic and finite-precision approximation are often used as implementing exact computations would require large computational resources and would be rather slow in the applications....master thesis 2023
- document
-
Schumann, Tim (author)One million homes will be needed in the Netherlands by 2030. Prefabrication in the construction industry can contribute to construct affordable houses, but that results often in standardized and not customized designs. These repetitive designs can be overcome through the introduction of mass-customization in architecture. Computational...master thesis 2023
- document
-
Tromp, Bart (author)Confocal microscopy is often used to make three-dimensional high-resolution images of biological samples. It is done by reflecting a laser beam off of a dichroic mirror, and focusing it on a sample with the use of a microscope. This sample is treated with a fluorescent dye. The dye molecules emit light of a higher wavelength with an intensity...master thesis 2022
- document
-
Park, kyu (author)The demand for lower construction costs comes at the price of duplicating architectural designs. As a result, the misperception that modular architecture is repetitive prevails. However, the developments in computational design and MMC (modern methods of construction) can suggest a standardized manufacturing approach to provide mass...master thesis 2022
- document
-
Peng, Q. (author), Vermolen, F.J. (author)We consider a mathematical model for skin contraction, which is based on solving a momentum balance under the assumptions of isotropy, homogeneity, Hooke's Law, infinitesimal strain theory and point forces exerted by cells. However, point forces, described by Dirac Delta distributions lead to a singular solution, which in many cases may cause...journal article 2022
- document
-
He, C. (author), Yang, Z. (author), Zhang, P. (author), Li, S. (author), Naeimi, M. (author), Li, Z. (author)Polygonal wear is a common type of damage on the railway wheel tread, which could induce wheel-rail impacts and further components failure. This study presents a finite element (FE) thermomechanical model to investigate the causes of wheel polygonal wear. The FE model is able to cope with three possible causes of polygonal wear: thermal...conference paper 2022
- document
-
O'Callaghan De Jonghe, Victor (author)The 2020 coronavirus pandemic lead to a virtual standstill of air passenger traffic in the spring of that same year. While some travel restrictions have since been lifted, passenger air travel is not expected to return to pre-coronavirus levels for several years. Then the question arises of how to park the large amounts of grounded aircraft...master thesis 2021
- document
-
van Dijk, Daan (author)In this thesis, the semilinear Cahn-Hilliard-Gurtin equation is studied using the method of Maximal Regularity. In 2012, Wilke developed a linear theory in $L^p$-spaces, and achieved a local and global well-posedness result for large $p$. In 2013, Denk and Kaip developed a linear theory in mixed integrability $L^pL^q$-spaces, using the method of...master thesis 2021
- document
-
Alfieri, Andrea (author)Transformers can generate predictions auto-regressively by conditioning each sequence element on the previous ones, or can produce output sequences in parallel. While research has mostly explored upon this difference on tasks that are sequential in nature, we study this contrast on visual set prediction tasks, to analyze the core behaviour of...master thesis 2021
- document
-
Leeuwis, Toby (author)When transforming PDE problems using Fourier and Laplace transforms, we can find functions that represent the problem, and which can be used to determine properties of the problem. We define such functions as symbols $P(\lambda,z)$. In general, we define the class of symbols $S(L_t\times L_x)$ are all functions which are represented by a...bachelor thesis 2021
- document
-
Chiang, Y.-C. (author), Buskermolen, P.J. (author), Borgart, A. (author)This paper extends polyhedral Airy stress functions to incorporate body forces. Stresses of an equilibrium state of a 2D structure can be represented by the sec- ond derivatives of a smooth Airy stress function and the integrals of body forces. In the absence of body forces, a smooth Airy stress function can be discretised into a polyhedron as...conference paper 2021
- document
-
Toshniwal, D. (author), DiPasquale, Michael (author)In this paper, we study the dimension of bivariate polynomial splines of mixed smoothness on polygonal meshes. Here, “mixed smoothness” refers to the choice of different orders of smoothness across different edges of the mesh. To study the dimension of spaces of such splines, we use tools from homological algebra. These tools were first applied...journal article 2021
- document
-
Lang, Kang (author)Although the pixel-wise labelling approaches have been exploited in depth and achieve good results in segmentation tasks, the grouped pixels are not ideal output for many end-users. In this paper, we propose a vertex-voting-based approach that can directly extract the polygon representations of objects. In order to better solve overlapping...master thesis 2020
- document
-
Liang, Hongqin (author), Liu, Pengfei (author), Wang, Tianlong (author), Wang, Haoyu (author), Zhang, Kailong (author), Cao, Yunqiang (author), An, Dong (author)For a heavy-haul locomotive within a wheel repairing period, wheel polygonal wear with different operating mileages is obtained by field testing. The test results show that the maximum radial runout of the wheel can increase to 0.87 mm and accompany with the typical damage of wheel tread shelling. Taking the wheel polygons as input excitation...journal article 2020
- document
-
Bouzas, V. (author), Ledoux, H. (author), Nan, L. (author)We introduce a novel approach for the polygonization of Multi-view Stereo (MVS) meshes of buildings, which results in compact and topologically valid models. The main characteristic of our method is structure awareness, i.e., the recovery and preservation of the initial mesh primitives and their adjacencies. Our proposed methodology consists...journal article 2020
- document
-
Jonk, Jasper (author), Minderman, Björn (author)Though several sensors are available for underwater scanning and ranging, they all have their limits. SONAR sensors are limited in resolution, and scanning mechanisms using a form of light for carrying the data suffer from high attenuation in turbid waters. <br/> <br/>The goal of this project was to design a LiDAR system that is capable of...bachelor thesis 2019
- document
-
Jovasevic, Slobodanka (author), Correia, José (author), Pavlovic, M. (author), Dantas, Rita (author), Rebelo, Carlos (author), Veljkovic, M. (author), de Jesus, Abilio M.P. (author)Purpose: In the last decades, the demand and use of renewable energies have been increasing. The increase in renewable energies, particularly wind energy, leads to the development and innovation of powerful wind energy converters as well as increased production requirements. Hence, a higher supporting structure is required to achieve higher wind...journal article 2019
- document
-
Nederveen, Ruud (author)Faults can both improve producibility and fluid flow in hydrocarbon reservoirs, and cause leakage and instabilities in sealing layers. For this reason it is of importance to create a multiscale understanding of the drivers behind deformation, and how deformation is accommodated. Carbonates have always been of interest to the oil and gas industry...master thesis 2018
Pages
- 1
- 2