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Afzal, Naqash (author), du Bois de Dunilac, Sophie (author), Loutit, Alastair J. (author), Shea, Helen O. (author), Ulloa, Pablo Martinez (author), Khamis, Heba (author), Vickery, Richard M. (author), Wiertlewski, M. (author), Redmond, Stephen J. (author), Birznieks, Ingvars (author)
Abstract: When manipulating objects, humans begin adjusting their grip force to friction within 100 ms of contact. During motor adaptation, subjects become aware of the slipperiness of touched surfaces. Previously, we have demonstrated that humans cannot perceive frictional differences when surfaces are brought in contact with an immobilised...
journal article 2024
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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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Mirhosseini, 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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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
document
Marino, Luca (author), Cicirello, A. (author)
This paper aims at assessing the effect of dry friction on the dynamic behaviour of a damped mechanical system subject to harmonic forcing. Previous work on friction damped systems highlighted that not including other forms of damping in the dynamic analysis can lead to unrealistic results such as the presence of infinite resonances. In this...
journal article 2022
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Chen, Shibiao (author), Cheng, Gang (author), Pang, Y. (author)
To overcome the bearing capacity deficiencies of traditional serial hip joint simulators, complex trajectory simulation, among others, as well as a parallel manipulator with two pairs of artificial hip joints and two moving platforms are proposed. The movements and driving forces of the parallel manipulator under the required motion and loading...
journal article 2022
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Sous, D. (author), Dodet, G. (author), Bouchette, Frédéric (author), Tissier, M.F.S. (author)
This paper reports on a combined experimental and numerical study dedicated to barrier reefs hydrodynamics. A network of pressure sensors and velocity profilers has been deployed for more than 2 months over the Ouano reef barrier, New Caledonia. The primary aim of the study is to assess the relevance of the classical depth-averaged momentum...
journal article 2020
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Zhang, Gangqiang (author), Zheng, Ganlin (author), Ren, Tianhui (author), Zeng, Xiangqiong (author), van der Heide, E. (author)
In order to reduce the damage to tissue and fill the interstices between fibers, multifilament sutures are frequently treated with certain coating materials. The objective of this study was to create and characterize dopamine hydrochloride (DA) and carboxymethyl chitosan (CMCS) coatings on surgical sutures and investigate their effects on the...
journal article 2020
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Zhang, Gangqiang (author), Ren, Tianhui (author), Zeng, Xiangqiong (author), van der Heide, E. (author)
Tribological interactions between surgical suture and human tissue play an important role in the stitching process. The purpose of the paper is to understanding the tribological behavior of surgical suture interacting with artificial skin, with respect to surgical suture material and structure, by means of a capstan experiment approach and a...
journal article 2017
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van de Grift, E.M.H.R. (author), Vervoort, J. (author), Cuppen, E.H.W.J. (author)
The Transition Network is a global grassroots network that supports community-led resilience in the face of global change. This paper reports on an ethnographic study of one of its longest-running projects, Transition Town Lewes (TTL) in the United Kingdom. The aim of the study is to analyse TTL as a community. More specifically, we ask two...
journal article 2017
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Ng Wei Siang, K. (author), Nicola, L. (author)
Discrete dislocation plasticity simulations are carried out to investigate the static frictional response of sinusoidal asperities with (sub)-microscale wavelength. The surfaces are first flattened and then sheared by a perfectly adhesive platen. Both bodies are explicitly modelled, and the external loading is applied on the top surface of...
journal article 2017
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Kokorian, J. (author), van Spengen, W.M. (author)
In this paper we demonstrate a new method for analyzing and visualizing friction force measurements of meso-scale stick–slip motion, and introduce a method for extracting two separate dissipative energy components. Using a microelectromechanical system tribometer, we execute 2 million reciprocating sliding cycles, during which we measure the...
journal article 2017
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Li, Z. (author), Zhao, X. (author), Dollevoet, R.P.B.J. (author)
A methodology for the determination of a critical size of surface defects, above which RCF can initiate, has been developed and demonstrated with its application to the passive type of squats under typical Dutch railway loading conditions. Such a methodology is based on stress evaluation of transient rolling contact at the defects, for which...
journal article 2016
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Koopman, J. (author), Jeltsema, D. (author), Verhaegen, M.H.G. (author)
A port-Hamiltonian formulation of the LuGre friction model is presented that can be used as a building block in the physical modelling of systems with friction. Based on the dissipation structure matrix of this port-Hamiltonian LuGre model, an alternative proof can be given for the passivity conditions that are known in the literature. As a...
journal article 2010
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Gillissen, J.J.J. (author)
Polymer-induced drag reduction is the phenomenon by which the friction factor of a turbulent flow is reduced by the addition of small amounts of high-molecular-weight linear polymers, which conformation in solution at rest can vary between randomly coiled and rodlike. It is well known that drag reduction is positively correlated to viscous...
journal article 2008
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Dodou, D. (author), Van den Berg, M. (author), Van Gennip, J. (author), Breedveld, P. (author), Wieringa, P.A. (author)
A self-propelling colonoscopic device moving inside the colonic tube should be able to periodically grip safely to the colonic wall as well as to manipulate the generated friction. The feasibility of achieving high grip and friction manipulation by covering the device with mucoadhesive films is experimentally tested. More precisely, the...
journal article 2008
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Dodou, D. (author), Breedveld, P. (author), Wieringa, P.A. (author)
One of the main challenges in designing diagnostic devices able to move along the colon is their locomotion method. Generating friction without applying high normal forces is a key requirement in order to eliminate the risk of tissue damage. One possible solution is to generate friction by means of adhesive forces. For this reason, the device...
journal article 2006
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Bagchi, B. (author), Srinivas, G. (author), Miyazaki, K. (author)
The recently developed Enskog theory for binary friction for fluids with continuous potentials, such as the Lennard-Jones, has been extended to calculate the frequency dependence of this friction, ?E(?). This ?E(?) is then applied to study vibrational energy relaxation of low-frequency modes via the Landau–Teller expression. The agreement with...
journal article 2001
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