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Koster, Jeroen (author)Aluminium alloy AA2024-T3 is a lightweight and damage tolerant material, and is therefore often used in aerospace applications. However, this alloy is difficult to weld using conventional fusion welding techniques due to defects caused by the meld pool.<br/> <br/>Friction stir welding (FSW) was developed by The Welding Institute (TWI) in 1991 in...master thesis 2023
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Bruggeman, Kevin (author)Friction damping is common in engineering structures for the purpose of energy dissipation and vibration control. Examples of applications are bolted connections and earthquake isolation systems. However, there is a shortage of works that investigate the effects of different contact materials on the energy dissipation performance and friction...master thesis 2023
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Heringa, Louise (author)The first aim of this master thesis is to explore whether the normal force on the castor wheels can be estimated from IMU data using a machine learning approach. The second aim is to evaluate whether incorporating the changing load distribution due to trunk movement could improve the friction power estimation compared with neglecting changes in...master thesis 2023
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Tuijp, Jeroen (author)Endoscopic instruments are integral components of minimally invasive procedures, widely used for diagnoses and treatment of diseases. When navigating the endoscope, it should experience a minimum of friction, while an increase in friction is beneficial for performing the medical procedure. Friction can be reduced by squeeze film levitation,...master thesis 2023
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Li, Chutian (author), Lai, F. (author), Shiau, Jim (author), Keawsawasvong, Suraparb (author), Huang, Hanhui (author)A narrow backfill zone is formed when retaining walls are built near existing stabilized structures (e.g., rock faces). In such circumstances, the classical passive earth pressure coefficient is no longer applicable, and a correction factor is required for the design. This paper aims to develop analytical solutions for estimating the passive...journal article 2023
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Sous, Damien (author), Martins, Kévin (author), Tissier, M.F.S. (author), Bouchette, Frédéric (author), Meulé, Samuel (author)The present paper reports on a field experiment performed over a shallow, roughness-varying barrier reef at Maupiti island, French Polynesia. The spectral wave energy balance is examined, outside the breaking zone and accounting for non-linear transfers and mean current, to estimate the wave friction factor. This latter varies from 0.05 to 4,...journal article 2023
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Wang, Bin (author), Wang, Di (author), Hicks, M.A. (author), Feng, Xia Ting (author)Retrogressive failures occur in slopes consisting of sensitive materials such as snow or quick clay. They can be triggered by a small disturbance at the slope toe, but can cause propagated failure spreading miles away. Understanding the physical mechanism and predicting the retrogressive failure process are particularly important. Previous...journal article 2023
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Monnoyer, Jocelyn (author), Willemet, L. (author), Wiertlewski, M. (author)Shortly after touching an object, humans can tactually gauge the frictional resistance of a surface. The knowledge of surface friction is paramount to tactile perception and the motor control of grasp. While potent correlations between friction and participants' perceptual response have been found, the causal link between the friction of the...journal article 2023
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Barelts, Eric (author)The development towards a circular economy has many hurdles to overcome. For the construction sector an important step in this process is the transition towards reusing structural elements. Prefabrication of elements is a significant step towards achieving this concept. However, a case where both prefabrication and reuse are limited is the...master thesis 2022
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Heinen, Jan (author)Skateboarding involves a human controlling a four wheeled vehicle that is steered by tilting the standing surface. The riding mechanics of skateboarding have been well reported [2, 3]. The sport also includes aerial maneuvers such as jumping of stairs, flying off ramps and flipping and rotating the skateboard. The most basic aerial trick is...master thesis 2022
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Langens, Coco (author)Manipulating soft and fragile objects is a challenging task in robotic grasping. The key challenge for robotic grasping is to exert enough grip force to prevent slipping while being gentle enough to prevent damage to an object. Existing grippers used for processes like automatic harvesting of fruits, either apply excessive grip force leading to...master thesis 2022
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Geschiere, Joran (author)The accuracy of hot press forming process simulations with unidirectional fiber reinforced thermoplastics is not at the desired level. Fundamental knowledge about the interactions between adjacent plies is needed to enhance predictive quality. Several mechanisms can be distinguished during hot press forming of composites. This thesis focuses on...master thesis 2022
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Reurings, C. (author)The current concerns regarding global warming and climate change in Europe and other parts of the world also influence developments in the automotive sector. Not only are alternative energy and power sources making their advent, but greenhouse gas emission reduction has also become a major factor in the development of vehicles with combustion...doctoral thesis 2022
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van Dijk, Didi (author)When we manipulate objects in our day-to-day life, we perceive information on the object via force feedback that we sense with our sensorimotor system. However, in virtual reality, we lack these forces, which makes it more challenging to interact with the digital world. Wearables, such as hand exoskeletons, can provide force feedback in VR....master thesis 2022
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ARGYROULIS, KONSTANTINOS (author)Inefficient installation of pile foundations may lead to high risks of material damage, inadequate pile capacity, and time delays that can have significant financial implications to any kind of project, both onshore and offshore. Therefore, there is high demand for a comprehensive driveability analysis that considers key aspects of the...master thesis 2022
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Pleij, Lodewijk (author)The soil-grout interface friction was measured to be in between 0.0 [kPa] and 14 [kPa]. To measure this friction, a special research method was invented that enabled a tunnel to be recreated. With this setup, any formation could be used. The formation could be created with a hole in the middle which simulated a borehole. Next, by filling and...master thesis 2022
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Mikail, Davey (author)The increasing demand for renewable energy sources, to achieve ‘green goals’ such as the Paris agreement, and their related projects, are becoming increasingly challenging to accomplish. Nowadays, offshore wind farm projects move into deeper waters and require larger individual Offshore Wind Turbines<br/>(OWT’s), which results in larger...master thesis 2022
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Roël, Felix (author)Our remarkable sense of touch provides us the feedback that is crucial for successfully manipulating a wide range of objects.<br/>The unconscious synergy between touch and the precision grip is particularly astonishing.<br/>During precision manipulation, humans constantly control their grip force to maintain a safety margin of approximately 25...master thesis 2022
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Brans, Tammo (author)It is impossible to imagine modern day interaction with technology without the use of touchscreens. It is a go-to interface to use for many applications, because of the high stimuli-response compatibility and adaptability of the graphical user interface. But the haptic feedback one would have with physical buttons and dials, is lost with the use...master thesis 2022
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Boonstra, Dirk-Jan (author)Tactile sensing provides crucial information about the stability of a grasped object by a robotic gripper. Tactile feedback can be used to predict slip, allowing for timely response to perturbations and to avoid dropping objects. Tactile sensors, included in robotic grippers, measure vibrations, strain or shearing forces which are produced by...master thesis 2022