Searched for: contributor%3A%22Sluys%2C+Lambertus+J.+%28promotor%29%22
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Xu, F. (author)
In the prevailing context of the 21st century, characterized by a predominant reliance on oil and gas, or in the promising future where green energy shapes a human society committed to net-zero emissions, the role of underground fractured formations in energy production and storage remains pivotal and irreplaceable. Geological faults typically...
doctoral thesis 2024
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Taumaturgo Mororo, L.A. (author)
Developing accurate and robust numerical approaches that are capable of modeling fracture in solids has been a challenging undertaking in the computational mechanics community for decades. Models based on a continuous formulation or on a discontinuous one have been proposed by numerous authors, expanding upon abilities and disadvantages of these...
doctoral thesis 2023
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Amani, J. (author)
It is widely recognized in engineering fracture mechanics that integral and differential forms of nonlocal damage models with a constant internal length scale suffer from an incorrect representation of failure mechanisms either by spurious damage growth or by incorrect damage initiation and propagation. In this regard, in this thesis, a...
doctoral thesis 2023
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Dekker, R. (author)
The world is currently in a severe man-made climate crisis, creating the need for using renewable energy sources such as offshore wind farms. Offshore wind turbines do not take up any valuable space on land and can use the greater wind resource at sea. The downside is, however, that they are exposed to a much harsher environment at sea, which...
doctoral thesis 2021
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Ghavamian, F. (author)
We study the acceleration of the finite element method (FEM) simulations using machine learning (ML) models. Specifically, we replace computationally expensive (parts of) FEM models with efficient ML surrogates. We develop three methods to speed up FEM simulations. The primary difference between these models is their degree of intrusion into the...
doctoral thesis 2021
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Nijgh, M.P. (author)
Traditionally welded headed studs have been used to generate composite interaction between a steel beam and a (cast in-situ) concrete floor. This permanent connection impairs the demountability of the structural components and therefore demolition of the composite floor system is inevitable at the end of the functional service life. The...
doctoral thesis 2021
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Zhuo, M. (author)
Conventional battery models (e.g., Pseudo-2D model) were developed especially for particle-based battery electrodes and have limitations in addressing the newly-emerging fiber-based ones. This thesis proposes numerical tools for efficient property evaluation of fiber-based electrodes and for multiscale simulation of battery electrochemical...
doctoral thesis 2021
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Liu, Y. (author)
Fiber reinforced polymer composites are increasingly used in impactresistant devices, automotives, and aircraft structures due to their high strengthtoweight ratios and their potential for impact energy absorption. Dynamic impact loading causes complex deformation and failure phenomena in composite laminates. Moreover, the high loading rates in...
doctoral thesis 2020
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Mostofizadeh, S. (author)
Increase in computational power during recent years contributed to a significant development in numerical methods in mechanics. There are many methods developed that address various complex problems, yet modelling of initiation and propagation of failure in thin-walled structures requires further development. Among numerous challenges involved,...
doctoral thesis 2020
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Goudarzi, M. (author)
Reinforced composites are used in many industrial and multi-functional applications. The efficiency of the reinforcements depends mainly on the aspect ratio, material properties, and the adhesion between matrix and reinforcement. Particularly, high aspect ratio fillers and inclusions have gained popularity due to their unique material and...
doctoral thesis 2020
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Simons, E.C. (author)
Armour systems for ballistic protection can be made from many materials. One type of material used in armour systems is ceramic. Ceramic materials, such as alumina and silicon carbide, can be beneficial in an armour system because of their high hardness and relatively low weight. The high hardness of the ceramic potentially causes a projectile...
doctoral thesis 2020
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Srinivasan, P. (author)
Shape-memory Alloys (SMAs) exhibit tremendous mechanical properties owing to their reversible phase transformation between the austenitic and the martensitic phase. Out of these, equi-atomic nickel-titanium (NiTi) alloys are the most widely used SMAs for various applications since the transformation occurs close to room temperature. Advances in...
doctoral thesis 2020
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Bni Lam, N.H.N. (author)
The ground source heat pump (GSHP) system is a well-established technology that utilizes a renewable energy source for heating and cooling of buildings. This technology is attractive because it relies on energy gain from shallow depths which are available nearly everywhere. Furthermore, it produces minimal CO2 emissions into the atmosphere....
doctoral thesis 2020
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li Piani, T. (author)
Research in this thesis is aimed at comprehensively characterizing the mechanical performance of adobe components. Adobe is a traditional masonry made of sundried bricks and mortar. Bricks are made of soil mixed with fibres and joined together by mud mortar. Adobe is largely spread in areas of the world prone to seismic risk or involved in...
doctoral thesis 2019
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Rocha, I.B.C.M. (author)
Although being a crucial step in structural design of laminated composites, prediction of their long-term mechanical performance remains a challenging task for which no comprehensive and reliable solution is currently available. Nevertheless, structures such as wind turbine blades, of which laminated composites constitute the main load bearing...
doctoral thesis 2019
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Pereira, Luis (author)
Extraordinary actions such as blast loadings and high velocity impact are rare, but usually have devastating effects. Thus, making critical infrastructures, such as military and governmental facilities, power-plants, dams, bridges, hospitals, etc., more resilient against these hazards is one of the best ways to protect ourselves and our...
doctoral thesis 2017
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Li, K. (author)
To assess durability of cement-based materials, permeability is commonly considered as an important indicator. It is defined as the rate of movement of an agent (liquid or gas) through the porous medium under an applied pressure. Although permeability can be directly measured in laboratories, these experimental tests generally require...
doctoral thesis 2017
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Latifi, M. (author)
doctoral thesis 2017
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Malagu, M. (author)
The development of carbon nanotube(CNT)-polymer composites advocates for a better understanding of their physical and mechanical properties that depend on the diameter of the embedded CNTs. Given that the experimental assessment of size effects is extremely difficult, the use of numerical models can be enormously helpful. However, since size...
doctoral thesis 2017
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Lahuerta Calahorra, F. (author)
Thick Laminates (above 6mm) are increasingly present in large composites structures such as wind turbine blades. Designs are based on static and fatigue coupon tests performed on 1-4mm thin laminates. However, a thickness effect has been observed in limited available experimental data. For this reason standard experimental data cannot...
doctoral thesis 2017
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