Searched for: subject%3A%22trench%22
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Schenau, Tom (author)
Jet trenching operations in sandy seabeds have been extensively studied and are well understood, offering a preferred method for offshore cable installation due to its relatively low environmental impact. However, the transition to clay seabeds presents significant challenges, demanding a deeper comprehension of jet trenching dynamics in...
master thesis 2024
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Li, J. (author)
Around 10% of the population will have to go through a catheterization procedure for the treatment of a cardiovascular disease at a certain stage of their lives. During such a procedure, smart catheters will be the "eyes and ears" of the surgeons, significantly improving the diagnosis and treatment. However, there have been very limited...
doctoral thesis 2024
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Wang, S. (author), Tan, Yanlong (author), Liu, Xu (author), Li, Shizhen (author), Liu, Ke (author), Yuan, Wucheng (author), Li, Tao (author), Zhang, Kouchi (author), French, P.J. (author), Ye, Huaiyu (author), Tan, Chunjian (author)
In this article, the avalanche withstand capability and transient failure model of commercial 1200 V asymmetric trench gate SiC MOSFETs are investigated by experiment and simulation under single-pulse unclamped inductive switching (UIS) conditions. The limiting avalanche current and limiting avalanche energy of the device are determined by...
conference paper 2023
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Ordeman, Sam (author)
Digital Soil Mapping (DSM) of soil types in geotechnical project areas is a top priority. These maps are often used in decision making and can have significant consequences related to costs and risks. Usually, these maps are generated by digital soil models that interpolate soil types at known locations. In practice, conventional spatial...
master thesis 2022
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Kluba, M.M. (author)
The progress in the field of neurostimulation is impressive, both from a technical as well as from a therapeutic point of view. Nowadays, the electrical stimulation of the nervous system can be used to induce or suppress muscle responses. Additionally, it can also influence hearing, vision, immune system response, pain perception, and even...
doctoral thesis 2022
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Pramana, K.E.R. (author), Ertsen, M.W. (author)
In the first decade of the 21st century, a water harvesting approach based on contour trenches—ditches to catch runoff—from Kenya was proposed as groundwater recharge technology in a semi-arid area in Ninh Phuoc district, Vietnam. In order to modify this solutions to tackle water scarcity, hydrological conditions at the site needed to be known....
journal article 2022
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van Heijningen, Boudewijn (author)
For the transportation of the produced energy at offshore windfarms to the onshore grid, export cables have to be installed in the sea bed. Usually, at first trenches are dredged, in which approximately one month later the cables are installed. During this period the trench should remain sufficiently open to install the cables, fulfilling the...
master thesis 2021
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Bakker, Floor (author)
To exploit its socio-economic functions, engineering measures are regularly applied in estuaries. Estuaries are, however, known to be very complex systems. Stemming from this complexity is the generation of a so-called estuarine turbidity maximum (ETM), which poses great siltation problems to the engineering measures. An engineering measure,...
master thesis 2020
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Li, J. (author), Naaborg, Jeroen (author), Louwerse, Marcus (author), Henneken, Vincent (author), Eugeni, Carlo (author), Dekker, R. (author)
Our work presents embedded high-density oxide-nitride-oxide (ONO) trench capacitors for power supply decoupling in the next generation of smart catheters. These millimeter-scale smart catheters are using a novel integration platform, Flex-to-Rigid (F2R). In the F2R platform, various functional modules are fabricated or assembled on thin silicon...
conference paper 2020
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Grazioli, D. (author), Zadin, Vahur (author), Brandell, Daniel (author), Simone, A. (author)
We study the effect of mechanical stresses arising in solid polymer electrolytes (SPEs) on the electrochemical performance of lithium-ion (Li-ion) solid-state batteries. Time-dependent finite element analyses of interdigitated plate cells during a discharge process are performed with a constitutive model that couples ionic conduction within the...
journal article 2019
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Warringa, Sjoerd (author)
Numerous offshore wind farms have been constructed recently in the southern part of the North Sea. Their infield and export cables are buried for protection against dropped or dragged objects. In sandy soils, it is common to use tracked remotely operated vehicles, equipped with two water jetting swords. These swords fluidise the seabed and...
master thesis 2018
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Wang, Tianxiang (author)
The emergence of new kinds of micro-technologies, e.g., MEMS (microelectromechanical systems) devices, biomedical microma- chines, remote sensors, etc., has given rise to new approaches in battery development. The additional thesis contributes part of Finite Element Analysis of microbatteries, to be specific, the trenched mirobatteries...
student report 2018
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Groenewegen, Mathijs (author)
The purpose of this thesis is to aid in the development of vertical cutting mining as a mining method. In order to do so, the technical feasibility and viability, and environmental benefit of vertical cutting as a complementary mining method were investigated. The investigation was performed for the case of the Victor Diamond mine in northern...
master thesis 2017
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Dirven, S.K.A. (author)
The significant growth in offshore wind activities in boulder clay areas requires suitable cable protection solutions. It is desirable to create a trench prior installation of the cable in order to guarantee the target depth of burial. Modern equipment of available on the market can be refined in order to create a reduced footprint, both...
master thesis 2016
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Motzheim, R.T. (author)
To protect pipelines in Arctic regions they are often buried in trenches, effectively preventing damage by ice gouging. When trenching is performed in Arctic soil, subsea permafrost may be encountered at water depths up to 100 m, mainlywhile excavating clay soil. Frozen clay is an anisotropic inhomogeneous material with a tensile strength and...
master thesis 2016
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Brouwers, R.J.P. (author)
This version of the thesis only covers the non-confidential part of the report. Tideway, as an offshore contractor, is often involved during the construction of an offshore wind farm to carry out cable burial and/or rock placement operations. The process of burying a cable, by means of a trencher, is until now executed by subcontractors. Tideway...
master thesis 2013
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Liefferink, D.M. (author)
This version of the thesis only covers the literature study. The results analysis and conclusion of the thesis are confidential. Pipelines in arctic waters are at risk of being damaged by gouging ice masses. To protect these pipelines, they can be buried in trenches. When trenching in arctic clayey soil, sub sea permafrost can be encountered....
master thesis 2013
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Siteur, W.J. (author)
Embedding of subsea pipelines for protection purposes is usually done in a ‘Trench – Install – Backfill’ operation. The pipeline can also be embedded after it is installed on the seabed. This method is called post-trenching. When using a trailer suction hopper dredger for post-trenching, a large water jet erodes the soil underneath the pipe...
master thesis 2012
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Van de Leur, K. (author)
It is common practice to protect subsea pipelines by embedding them into the soil. Trenches can be made before or after the pipelines have been laid. In the latter case, the excavation process is called post-trenching. The essence of post-trenching, as handled in this thesis, is erosion of sand by a water-jet. The literature study focused on the...
master thesis 2010
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Van Rijn, L.C. (author), Walstra, D.J. (author), Van Helvert, M.A.G. (author), De Boer, G. (author)
For several years the large-scale mining of sand from the Dutch Sector of the North sea is in discussion related to the need of sand for shoreface, beach and dune nourishment and large-scale engineering works at sea (Maasvlakte extension, airport at sea). The mining methods considered, basically fall into two categories: wide, shallow or small,...
report 2001
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