Searched for: subject%3A%22Force%255C%2Bmeasurements%22
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Hartog, Friso (author)
Turbulent drag is the largest source of fuel consumption in aviation and forms a significant contribution to climate warming. Recent numerical studies have suggested the ability of surfaces with streamwise-preferential permeability to reduce turbulent friction, and a theoretical framework behind the working mechanism has been proposed. This work...
master thesis 2021
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Zhang, P. (author), Moraal, J. (author), Li, Z. (author)
An innovative downscale test rig called V-Track has been constructed for wheel-rail contact experiments under impact loading conditions. In this paper, a force measurement system termed a dynamometer was developed in V-Track to measure the wheel-rail contact forces. The dynamometer consists of four 3-component piezoelectric force sensors and...
journal article 2021
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Jansen, Wiljan (author)
Mangrove forests, which serve as a natural sea defence, have been degraded by human action during the last decades. To protect and recover these areas, different types of permeable structures consisting of bamboo have been proposed and applied. However, these structures are currently based on engineering judgement, as design rules are not...
master thesis 2019
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Chu, L. (author)
Atomic Force Microscopy (AFM) can not only image the topography of surfaces at atomic resolution, but can also measure accurately the different interaction forces, like repulsive, adhesive and lateral existing between an AFM tip and the sample surface. Based on AFM, various extended techniques have been developed such as colloidal probe AFM,...
doctoral thesis 2018
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Smisek, J. (author), Mugge, W. (author), Smeets, Jeroen B J (author), van Paassen, M.M. (author), Schiele, A. (author)
In haptic shared control systems (HSC), a fixed strength of guidance force equates to a fixed level of control authority, which can be insufficient for complex tasks. An adaptable control authority based on operator input can allow the HSC system to better assist the operator under varied conditions. In this paper, we experimentally...
journal article 2018
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van der Kruk, E. (author), Reijne, M.M. (author), de Laat, Bjorn (author), Veeger, H.E.J. (author)
This study performed an analysis of the push-off forces of elite-short-track speed skaters using a new designed instrumented short-track speed skate with the aim to improve short-track skating performance. Four different skating strokes were distinguished for short-track speed skaters at speed. The strokes differed in stroke time, force level...
journal article 2018
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Hardon, S.F. (author), Horeman, T. (author), Bonjer, H. Jaap (author), Meijerink, W. J H Jeroen (author)
Background: Within minimally invasive surgery (MIS), structural implementation of courses and structured assessment of skills are challenged by availability of trainers, time, and money. We aimed to establish and validate an objective measurement tool for preclinical skills acquisition in a basic laparoscopic at-home training program. Methods...
journal article 2018
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Kornelsen, Cam (author)
In the sport of long track speed skating, in recent years there has been an increasing desire for training tools which provide deeper technical insight of the skating movement to the athlete and coaches. In previous literature a variety of measurement systems have been presented; one such system included the instrumented klapskate developed at...
master thesis 2017
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van Loon, Orin (author)
This study treats the calculation of longitudinal forces on a ship in a lock chamber due to the levelling procedure. The focus will be on the force resulting from the filling jet through the levelling door in the lock, with the main point of interest being the interaction between the ship and the flow resulting from the jet. To understand more...
master thesis 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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van der Kruk, E. (author), Den Braver (student), O. (author), Schwab, A.L. (author), van der Helm, F.C.T. (author), Veeger, H.E.J. (author)
In the current project, we aim to provide speed skaters with real-time feedback on how to improve their skating performance within an individual stroke. The elite skaters and their coaches wish for a system that determines the mechanical power per stroke. The push-off force of the skater is a crucial variable in this power determination. In...
journal article 2016
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Sun, S. (author)
The goal of this thesis is to design a hybrid trainer that can quantitatively measure the LESS performance while investigating the difference between LESS and CLS, finally propose a novel objective assessment tools for future research. A force platform is developed, which measures tissue manipulation force in the range of 0-20N with an accuracy...
master thesis 2013
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Rodrigues, S.P. (author), Horeman, T. (author), Dankelman, J. (author), Van den Dobbelsteen, J.J. (author), Jansen, F.W. (author)
It is generally assumed that safety of tissue manipulations during (laparoscopic) surgery is related to the magnitude of force that is exerted on the tissue. To provide trainees with performance feedback about tissuehandling skills, it is essential to define objective criteria for judging the safety of applied forces. To be of clinical relevance...
journal article 2011
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Maassen, R. (author), Lee, R. (author), Van Zundert, A. (author), Cooper, R. (author)
This report describes the anesthetic management of an obese patient with a difficult airway and the merits of videolaryngoscopy, specifically in terms of the reduced risk of dental damage during intubation. A 49-year-old woman (body mass index; BMI, 36 kg·m?2), was scheduled to undergo an elective laparoscopic cholecystectomy because of...
journal article 2009
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