Searched for: subject%3A%22pressure%255C%2Bdistribution%22
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Cross, James (author)
Bipolar electrosurgical vessel sealing is commonly used in human and veterinary medicine. This method of vessel sealing is often preferred over traditional suturing or clipping of blood vessels because it comes with the advantages of reducing intraoperative blood loss and operation time. Most bipolar vessel sealers are disposable. The high costs...
master thesis 2022
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Glaser, Niels (author)
Dry adhesives can reattach to surfaces due to the reversible bond made by Van der Waals forces. These adhesives can therefore be used as gripping surface that has a high frictional load capacity, independent of the grasping force. In many grippers, the adhesive surface is often pressed into contact with another surface (’substrate’) in an open...
master thesis 2022
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Roozendaal, Tjark (author)
This report concerned the development of a soft robotic module for a seat pan, its optimization and application. The soft robotic module has an LED and photosensors for determining the distance of indentation and the passive force created by compressing the foam spring inside. An air pressure sensor is used to determine the active force created...
master thesis 2021
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Dangal, S. (author), Smulders, M. (author), Vink, P. (author)
This paper investigates whether spring-foam technology in an aircraft seat-pan can reduce weight and at the same time provide equal or better comfort. Firstly, through literature studies and using an iterative design process a prototype seat-pan was designed and developed using spring-foam technology. The (dis)comfort of this seat was...
journal article 2021
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Dassanayake, Darshana T. (author), Antonini, A. (author), Pappas, Athanasios (author), Raby, Alison (author), Brownjohn, James Mark William (author), D’Ayala, Dina (author)
The survivability analysis of offshore rock lighthouses requires several assumptions of the pressure distribution due to the breaking wave loading (Raby et al. (2019), Antonini et al. (2019). Due to the peculiar bathymetries and topographies of rock pinnacles, there is no dedicated formula to properly quantify the loads induced by the breaking...
journal article 2021
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van Gaalen, Melissa (author)
Introduction<br/>Transparent facial pressure masks with silicone sheeting are used as a non-invasive treatment option for hypertrophic scarring following oncological facial reconstruction. These masks are fabricated using conventional plaster moulds, which is labour-intensive and requires an experienced orthotist or prosthetist. 3D scanning and...
master thesis 2020
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Gedikli, Ersegun Deniz (author), Nord, Torodd Skjerve (author), Hendrikse, H. (author), Ziemer, Gesa (author)
Pressures at the ice-structure interface during model-scale ice-structure interaction are often measured with tactile sensors. Resulting datasets usually include large volume of data along with some measurement error and noise; therefore, it is inherently hard to extract the hidden fluctuating pressures in the system. Identifying the...
journal article 2019
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Dangal, Sagar (author)
This paper investigates whether spring-foam technology in an aircraft seatpan can reduce weight and at the same time provides equal or better comfort. Firstly, through literature studies and iterative design process a prototype seatpan was designed and developed using spring-foam technology. This was then tested against standard aircraft seat...
master thesis 2018
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Smulders, M. (author), Berghman, K. (author), Koenraads, M. (author), Kane, J.A. (author), Krishna, K. (author), Carter, T.K. (author), Schultheis, U. (author)
BACKGROUND: The concept of comfort is one way for the growing airline market to differentiate and build customer loyalty. This work follows the idea that increasing the contact area between human and seat can have a positive effect on comfort [5, 6, 7]. OBJECTIVE: To improve comfort, reduce weight and optimise space used, a human contour...
journal article 2016
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Jansen, A.J. (author), Van Abbema, A. (author), Howe, C. (author)
The paper presents the changes in perceived comfort while hiking in a sailing boat (in this case the Laser, a single-handed Olympic dinghy) due to a new design of hiking pads. The project used a ‘research by design method’. The aim was to improve sailing comfort which leads to lower fatigue and therefor improved performance. While hiking, a...
journal article 2012
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Moes, C.C.M. (author)
The pressure distribution and the location of the points of maximum pressure, usually below the ischial tuberosities, was measured for subjects sitting on a flat, hard and horizontal support, and varying angle of the rotation of the pelvis. The pressure data were analyzed for force- and pressure-related quantities. Multiple regression was...
journal article 2007
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Staarink, H.A.M. (author)
doctoral thesis 1995
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Kuiper, H. (author), van der Wees, A.J. (author), Hendriks, C.F.W. (author), Labrujère, T.E. (author)
NLR participates in the ECARF (European Computation Aerodynamics Research Project) "Optimum Design" project, developing an algorithm for multi-point airfoil design. Within the ECARP project a test case has been defined for two-point design with the aid of well-specified target pressure distributions. It appears that optimization of pressure...
report 1995
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Zijlema, M. (author), Segal, A. (author), Wesseling, P. (author)
journal article 1995
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Hounjet, M.H.L. (author)
A method is presented for the generation of 0-type grids about transverse cross-sections of transport type aircraft. The method combines a hyperbolic grid generation scheme with source terms obtained with a boundary element method in such a way that 0-type grids around fairly complex shapes with concavities can be generated easily. The...
report 1990
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den Boer, R.G. (author)
A new postprocessing procedure is applied on the data, acquired in 1981 during the unsteady transonic pressure measurements on a transport-type supercritical wing (LANN-model), oscillating in pitch. The new procedure takes the influence into account of the local boundary layer on the dynamic response of the pressure tubes. This report presents...
report 1989
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Hounjet, M.H.L. (author)
A description is given of the method CAR88 for the calculation of steady and time-linearized unsteady subsonic and supersonic flow about complex 2-D and 3-D configurations. The method belongs to the category of the socalled panel methods. Results of applications in supersonic flow are shown which have been made to a 2-D oscillating flat plate, a...
report 1988
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Schippers, H. (author)
A description is given of TULIPS - a method for Transonic Unsteady Lifting Inviscid Potential-flow Simulation. The Mathematical formulation and the numerical approach are presented for flow about oscillating airfoils. TULIPS is based on the numerical integration of the unsteady full-potential equation in generalized coordinates. The equation is...
report 1988
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Hounjet, M.H.L. (author)
A new method ARSPSC is described for the calculation of steady and time-linearized unsteady subsonic potential flow about complex 2-D and 3-D configurations. The method belongs to the category of the so-called panel methods. Applications have been made to a 2-D oscillating flat plate, a 2-D multi-component airfoil with oscillating flap and a 3-D...
report 1986
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Elsenaar, A. (author)
As part of the joint International Vortex Flow Experiment, force and pressure measurements have been carried out on a 65 deg delta wing configuration in the transonic and supersonic wind tunnels of NLR. Out of these data three test cases were selected by the organizing committee of the GAMM WORKSHOP on the "Numerical Simulation of Compressible...
report 1986
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