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Tsetas, A. (author)The ambitious goals towards the decarbonization of the global energy sector have amplified the demand for renewable energy resources. Amongst the renewables, offshore wind possesses a pivotal role in this endeavour, showcasing remarkable growth in recent years. However, this rapid expansion has been accompanied by a series of technical...doctoral thesis 2023
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ul-Haq, Ehshan (author)This master’s thesis focuses on the design and assembly of an innovative tow spreading line for investigating carbon fiber tow spreading through the utilization of spreader bars. The primary objective was to examine the friction behavior during the spreading process by employing multiple tension sensors. Additionally, novel monitoring concepts...master thesis 2023
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van Delft, Youri (author)Background: Through technological development, a variety of mechanical finger joints have been produced. No current design takes inspiration from nature enough to develop a synovial inspired single finger joint. Due to this the potential performance is unknown, while natural joints out perform mechanical finger joints with respects to the...master thesis 2023
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de Ruiter, Jop (author)In recent years the global energy demand has rapidly increased and will continue to grow in the next decades. With the growing demand for energy and the international agreement to use more renewable energy, the offshore wind industry is developing rapidly. This causes offshore wind farms to be installed at locations with larger water depths and...master thesis 2023
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Schuijt, Rinus (author)In this thesis, the friction performance of polyurethane tensioner pads used in offshore pipe-laying was investigated. Tensioner pads are used in pipe-lay to create tension in a pipe. The need to understand the pads better is because of the increased use of pipe coatings and pipe lay in deeper waters. Deep water leads to more pipe tension, and...master thesis 2023
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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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Li, H. (author), Pourquie, M.J.B.M. (author), Ooms, G. (author), Henkes, R.A.W.M. (author)The Reynolds-Averaged Navier Stokes (RANS) with the Launder & Sharma low-Reynolds number k−ε model was used to simulate core-annular flow in the same configuration with vertical upflow as considered by Kim & Choi (2018), who carried out Direct Numerical Simulations (DNS), and by Vanegas Prada (1999), who performed experiments. The DNS...journal article 2023
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Feng, W. (author), Pavlovic, M. (author), Koetsier, M. (author), Veljkovic, M. (author)Debonding crack propagation at the composite-to-steel interface has been found to be an important failure mechanism for wrapped composite joints under static and fatigue loads. Friction at the interface behind the crack tip may deviate fatigue debonding of the joints from the linear-fracture-mechanics behaviour. This paper presents static and...journal article 2023
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Plasma-sprayed Al2O3-TiB2-SiC ternary composite coatings and its wear behaviour based on SiC contentMirhosseini, Seyed Hossein (author), Mosallaee, Masoud (author), Razavi, Mansour (author), Fotouhi, M. (author)This paper aims to study the effect of adding different SiC content on the wear performance of Al<sub>2</sub>O<sub>3</sub>-TiB<sub>2</sub>-SiC ternary composite coatings produced by the air plasma spraying process. The study used SHS powders as primary materials, consisting of H<sub>3</sub>BO<sub>3</sub>, Al, and TiO<sub>2</sub>, and 5, 10,...journal article 2023
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Tsetas, A. (author), Tsouvalas, A. (author), Metrikine, A. (author)Gentle Driving of Piles (GDP) is a new vibratory installation technology for tubular (mono)piles. It is characterized by the simultaneous application of low-frequency axial and high-frequency torsional vibrations, envisaged to achieve both high installation performance and reduced underwater noise emissions. The concept of GDP has been...journal article 2023
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Toa, X. (author), Shen, Yunwei (author), Wang, Bo (author), Infante Ferreira, C.A. (author)High concentration NH<sub>3</sub>/H<sub>2</sub>O is suitable for Kalina cycles used for the recovery of low grade heat. Plate heat exchangers (PHEs) are compact and reduce the charge of working fluid. This paper investigates the condensation of NH<sub>3</sub>/H<sub>2</sub>O with NH<sub>3</sub> mass concentrations of 80%-96%. The vapor and...journal article 2023
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Cai, Z. (author), Wiertlewski, M. (author)The sensation of touching virtual texture and shape can be provided to a touchscreen user by varying the friction force. Despite the saliency of the sensation, this modulated frictional force is purely passive and strictly opposes finger movement. Therefore, it is only possible to create forces along the direction of movement and this...journal article 2023
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Amoroso, Pedro (author), Vrcek, Aleks (author), de Rooij, Matthijn B. (author)This study introduces a method based on fine torque control to evaluate traction in rolling—liding line contacts under small slide-to-roll ratios (SRRs). To accomplish this, we engineered an innovative testing machine—a two-roller tribometer capable of precisely applying resisting torques to one of the rollers. Two types of tests were designed...journal article 2023
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Marino, Luca (author), Cicirello, A. (author)An approach for the identification of discontinuous and nonsmooth nonlinear forces, as those generated by frictional contacts, in mechanical systems that can be approximated by a single-degree-of-freedom model is presented. To handle the sharp variations and multiple motion regimes introduced by these nonlinearities in the dynamic response, the...journal article 2023
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Sulollari, E. (author), van Dalen, K.N. (author), Cabboi, A. (author)Applying an oscillatory load is one of the most efficient ways to alter friction forces. Several theoretical and experimental studies on the influence of oscillatory loads on friction have been conducted, investigating the effect of both in-plane and out-of-plane oscillations for different tribological pairings. However, in the literature, the...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