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- Bergsma, F. (author), Motta, D. (author), Le Pelley, D.J. (author), Richards, P.J. (author), Flay, R.G.J. (author) conference paper
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Reurings, C. (author), Koussios, S. (author), Bergsma, O.K. (author), Vergote, K. (author)In order to compete with steel, a fibre-reinforced composite exhaust wall with a general-purpose resin system requires an effective but lightweight insulation layer. However a lack of experimental methods for heat transfer from turbulent gas flow to pipe walls lined with a porous insulation layer was discovered in literature. Such a test method...conference paper 2015
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Woodington, W. (author), Bergsma, O.K. (author), Schipper, H.R. (author)A composite textile reinforced concrete (TRC) material is developed to overcome the difficulties of constructing double-curved freeform structures. This is possible by shear-deformation of the woven reinforcement. It affects the direction of reinforcement and thickness, resulting in variable orthotropic properties over the surface. The research...conference paper 2015
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- Bergsma, F. (author), Moerke, N. (author), Zaaijer, S. (author), Hoeijmakers, H.W.M. (author) conference paper 2013
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de Zeeuw, C.M. (author), Peeters, D.M.J. (author), Bergsma, O.K. (author), Benedictus, R. (author)For pick-and-place processes to become widely implemented in industry a consistent and acceptable product quality needs to be achieved. One important quality criterion is the fiber angle deviations in the reinforcement. Handling a reinforcement will subject it to forces due to e.g. gravity and accelerations. These forces can result in in-plane...conference paper 2022
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Hofland, Bas (author), Marissen, R. (author), Bergsma, O.K. (author)Proof-of-concept model tests on a novel self-deploying on-shore tsunami barrier were executed. The tsunami barrier consists of a membrane, floater and cables that are stored underground. Due to buoyancy the barrier self-deploys when struck by a tsunami. The membrane and cables consist of the strong, flexible and light-weight material Dyneema...conference paper 2016
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van der Voordt, Theo (author), Jensen, Per Anker (author), Hoendervanger, Jan Gerard (author), Bergsma, Feike (author)This conference paper presents a new Value Adding Management model that aims to support decision makers in identifying appropriate interventions to add value to the organisation, to manage its implementation, and to measure the output and outcomes. The paper builds on value adding management theories and models including the triplet input...conference paper 2016
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Wentzel, C.M. (author), Eijk, A. (author), Groenewegen, G. (author), Bergsma, O.K. (author)What started out as an exercise in exploring the weight reduction potential of those allegedly “heavy recip crossheads”, turned out to be a fast leap towards implementation of a new hybrid material concept for very lightweight pistons. This was enabled by a next phase in the EFRC R&D group research project which has been subject of this...conference paper 2016
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Lavalette, N. (author), Bergsma, O.K. (author), Zarouchas, D. (author), Benedictus, R. (author)In the context of lightweight structure design for the transportation and robotics industries, new types of composite structures are being developed, in the form of trusses made of fiber-reinforced polymer composite members of small diameter. The main objective of this work is to study adhesive joints, bonding pultruded composite tubes inside...conference paper 2018
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Çelik, O. (author), Shroff, S. (author), Teuwen, Julie J.E. (author), Bergsma, O.K. (author), Benedictus, R. (author)Laser assisted automated tape or fiber placement (LATP/LAFP) with in-situ consolidation is a promising technique for manufacturing large structures, eliminating the limitations of autoclave curing. Currently, 2-D models are mostly preferred for the thermal analysis of the process. A 3-D, transient thermal finite element model is developed to...conference paper 2018
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Bruggeman, A.M.R.M. (author), Nikitin, M. (author), la Rocca, G. (author), Bergsma, O.K. (author)During the early design stages of airframe components, many possible design architectures and production methods need to be traded to find the best configuration. Evaluating different production methods can be challenging as different production methods put different requirements on the product to be designed. This paper presents a new...conference paper 2024
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Chmura, L.A. (author), Ghaffarian Niasar, M. (author), Bergsma, D. (author)In recent years, the architecture of the power system has been the subject of a major change. The commonly known structure with centralized generation and one directional power flow, gives gradually the place to the new concept of the power network where both the energy generators and consumers are distributed. Particularly, the continuously...conference paper 2019
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Poorte, V.K. (author), Bergsma, O.K. (author), van Campen, J.M.J.F. (author), Alderliesten, R.C. (author)Hydrogen is being investigated as aviation fuel, with the objective to achieve an energy transition for the aviation sector. Effective storage solutions are crucial to mitigate the aerodynamic penalty caused by its low volumetric energy density. The focus of this study is the integration of a cryo-compressed vacuum-insulated storage vessel...conference paper 2024
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- Bergsma, O.K. (author) doctoral thesis 1995
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Yan, C. (author), Bergsma, O. (author), Koussios, S. (author), Zu, L. (author), Beukers, A. (author)The sandwich composites fuselages appear to be a promising choice for the future aircrafts because of their structural efficiency and functional integration advantages. However, the design of sandwich composites is more complex than other structures because of many involved variables. In this paper, the fuselage is designed as a sandwich...journal article 2010
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Yuan, C. (author), Bergsma, O. (author), Beukers, A. (author)Increase of sound transmission loss(TL) of the fuselage is vital to build a comfortable cabin environment. In this paper, to find a convenient and accurate means for predicting the fuselage TL, the fuselage is modeled as a composite cylinder, and its TL is predicted with the analytical, the statistic energy analysis (SEA) and the hybrid FE&SEA...journal article 2012
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Gawehn, M.A. (author), Almar, Rafael (author), Bergsma, Erwin W. J. (author), de Vries, S. (author), Aarninkhof, S.G.J. (author)Optical satellite images of the nearshore water surface offer the possibility to invert water depths and thereby constitute the underlying bathymetry. Depth inversion techniques based on surface wave patterns can handle clear and turbid waters in a variety of global coastal environments. Common depth inversion algorithms require video from shore...journal article 2022
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Vandenplas, Jérémie (author), Calus, Mario P.L. (author), Eding, Herwin (author), van Pelt, Mathijs (author), Bergsma, Rob (author), Vuik, Cornelis (author)Background<br/>The preconditioned conjugate gradient (PCG) method is the current method of choice for iterative solving of genetic evaluations. The relative difference between two successive iterates and the relative residual of the system of equations are usually chosen as a termination criterion for the PCG method in animal breeding. However,...journal article 2021
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van der Voordt, Theo (author), Jensen, Per Anker (author), Hoendervanger, Jan Gerard (author), Bergsma, Feike (author)This paper presents a new Value Adding Management (VAM) model that aims to support decision makers in identifying appropriate interventions in buildings, other facilities and services that add value to the organisation, to manage its implementation, and to measure the output and outcomes. The paper builds on value adding management theories and...journal article 2016
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Lavalette, N. (author), Bergsma, O.K. (author), Zarouchas, D. (author), Benedictus, R. (author)In the context of lightweight structure design for the transportation and robotics industries, new types of composite structures are being developed, in the form of trusses made of fiber-reinforced polymer composite members of small diameter (a few millimeters thick at most). Some concepts of wound trusses can be found in the literature, but...journal article 2017