Searched for: subject:"vibration"
(1 - 20 of 141)

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Ochoa, P.A. (author), Groves, R.M. (author), Bernedictus, R. (author)
A reliable damage diagnostic by ultrasonic guided wave (GW) based structural health monitoring (SHM) can only be achieved if the physical interactions between wave propagation, the SHM system and environmental factors are fully understood. The purpose of this research was to gain knowledge about the effects of high-amplitude low-frequency...
article 2020
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Geurts, C.P.W. (author), Bronkhorst, A.J. (author), Moretti, D. (author), Pruiksma, J.P. (author), Snijders, R. (author)
A study was undertaken to define which set of signal characteristics can be used to differentiate between various vibration sources in a built environment. Several datasets of vibration measurements on known sources are obtained and analyzed. A set of 11 signal characteristics were determined for all signals. Based on the correlation between...
conference paper 2020
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Geurts, C.P.W. (author)
public lecture 2019
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Talib, I. (author), Bronkhorst, A.J. (author)
Demping is een belangrijke parameter in de analyse van het trillingsgedrag van hoogbouw. Met een beter begrip van demping kunnen modellen worden ontwikkeld waarmee het trillingsgedrag nauwkeuriger kan worden voorspeld. Met een nieuwe analysetechniek, genaamd Energie Flux Analyse (EFA) of energiestroomanalyse, kan de dempingsbijdrage van zowel de...
article 2019
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Persson Waye, K. (author), Smith, M.G. (author), Hussain-Alkhateeb, L. (author), Koopman, A. (author), Ögren, M. (author), Peris, E. (author), Waddington, D. (author), Woodcock, J. (author), Sharp, C. (author), Janssen, S. (author)
Exposure to nocturnal freight train vibrations may impact sleep, but exposure-response relationships are lacking. The European project CargoVibes evaluated sleep disturbance both in the field and in the laboratory and provides unique data, as measures of response and exposure metrics are comparable. This paper therefore provides data on exposure...
article 2019
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Belfroid, S.P.C. (author), González Díez, N. (author), Korst, H.J.C. (author)
Flow-induced pulsations in flexible risers and flowlines (FLIP) has been the subject of ongoing research roughly over the last two decades. This phenomenon, also called singing, can cause high vibration and cyclic stress levels in the attached up- and downstream pipe systems, thereby imposing serious limitations on the flowrates through the...
conference paper 2019
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Ostendorf, C. (author), Geurts, C.P.W. (author)
Trillingsrichtlijn A wordt sinds 2002 gebruikt voor de beoordeling van de kans op schade. In 2017 heeft de SBRCurnet-commissie de revisie van de richtlijn afgerond met vier belangrijke veranderingen. Maar er is meer veranderd. Een overzicht
article 2018
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Thompson, D. (author), Squicciarini, G. (author), Zhang, J. (author), Lopez Arteaga, I. (author), Zea, E. (author), Dittrich, M.G. (author), Jansen, H.W. (author), Arcas, K. (author), Cierco, E. (author), Magrans, F.X. (author), Malkoun, A. (author), Iturritxa, E. (author), Guiral, A. (author), Stangl, M. (author), Schleinzer, G. (author), Martin Lopez, B. (author), Chaufour, C. (author), Wändell, J. (author)
The noise produced during a train pass-by originates from several different sources such as propulsion noise, noise from auxiliary equipment, aerodynamic noise and rolling noise. The rolling noise is radiated by the wheels and the track and is excited by the wheel and rail unevenness, usually referred to as roughness. The current TSI Noise...
article 2018
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Geurts, C.P.W. (author)
Langzaam maar zeker komt in Nederland hoogbouw van 200 m in beeld. Bij die hoogte horen trillingsfrequenties rond 0,2 Hz, die als hinderlijk kunnen worden ervaren. Op het onlangs gehouden symposium ‘Beleven van hoogbouw’ werd het belang onderschreven om samen beter grip te krijgen op de voorspelling en beoordeling van het dynamisch gedrag van...
article 2018
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D'Amour, S. (author), Bos, J.E. (author), Keshavarz, B. (author)
Visually induced motion sickness (VIMS) is a well-known sensation in virtual environments and simulators, typically characterized by a variety of symptoms such as pallor, sweating, dizziness, fatigue, and/or nausea. Numerous methods to reduce VIMS have been previously introduced; however, a reliable countermeasure is still missing. In the...
article 2017
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Berkhoff, A. (author), Tajdari, F. (author)
This paper presents a method to realize an acoustic source for low frequencies with relatively small thickness. A honeycomb plate structure which is open on one side combines the radiating surface and the major part of the air cavity. The vibration of the plate is controlled with a decentralized feedback controller. The fundamental resonance...
conference paper 2017
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Eijk, A. (author)
At the GORO Nickel plant, located in New Caledonia, MH Wirth GmbH has designed and constructed a slurry pump system. However, integrity issues with the compensator (bellows) have been observed, which may have been caused by pulsation-induced fatigue. An alternative layout of the compensator has been designed by MHWirth to improve the reliability...
report 2016
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van Beek, P.J.G. (author), Pereboom, H.P. (author), Slot, H.J. (author)
Prior to subsea installation, a subsea system has to be tested to verify whether it performs in accordance with specifications and component specific performance evaluation criteria. It is important to verify that the assembled components work in accordance with the assumptions and design criteria used in the detailed engineering. These criteria...
conference paper 2016
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Kachko, A. (author), van der Ham, L.V. (author), Bardow, A. (author), Vlugt, T.J.H. (author), Goetheer, E.L.V. (author)
Chemical absorption of CO2 using aqueous amine-based solvents is one of the common approaches to control acidic gases emissions to the atmosphere. Improvement in the efficiency of industrial processes requires precise monitoring tools that fit with the specific application. Process monitoring using in-line multivariate measurement methods...
article 2016
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Janssen, S.A. (author), Zuada Coelho, B. (author), Koopman, A. (author), Peris, E. (author), Groll, W. (author), Wisniewska, K. (author)
An important aim of the EU-project CargoVibes was to derive exposure-response relationships for the expected annoyance due to vibration among residents living near freight railway lines. This was done based on existing survey data, as well as on some new survey data gathered within the project. To this end, a questionnaire was sent by mail to...
conference paper 2015
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Sanna, F. (author), Golliard, J. (author), Belfroid, S.P.C. (author)
Previous studies demonstrate that the presence of liquid strongly influences the pressure pulsation amplitudes of flow induced pulsations. In particular, in case of annular flow (thin liquid film on the walls) the pulsations can be eliminated. The present study aims at evaluating the contribution of the liquid film to the pulsation reduction....
conference paper 2015
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Claassen, W. (author), Snijder, H.H. (author), Koot, C.J.G. (author), Maljaars, J. (author)
De Hovenring is een schoolvoorbeeld van moeilijk voorspelbare trillingen. Ook wanneer wel direct voorzieningen waren opgenomen in het ontwerp, dan nog zou de problematiek zich hebben aangediend. In de praktijk bleken trillingen op te treden met hoge spanningsranges in grote aantallen, die volgens de analyses op basis van de norm vooraf niet...
article 2015
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Bos, J.E. (author)
BACKGROUND: Motion sickness may reduce passenger comfort and crew performance. Countermeasures are dominated by medication with specific and often undesirable side effects. OBJECTIVE: To shown that sickness due to motion can be reduced by adding an inherent non-sickening vibration and by mental distraction. METHODS: Eighteen blindfolded subjects...
article 2015
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Dittrich, M.G. (author), Létourneaux, F. (author), Dupuis, H. (author)
A measurement method for combined roughness, track decay rates and transfer functions derived from rail vibration during a train pass-by was initially developed in the late nineties [1]. This method was later implemented in software tools [2] and applied in several countries for various purposes [3, 4, 5]. Due to the broad application potential...
bookPart 2015
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Waddington, D. (author), Woodcock, J. (author), Smith, M.G. (author), Janssen, S.A. (author), Persson Waye, K. (author)
The aim of this paper is to present an overview of the research concerning human response to vibration conducted in the EU FP7 CargoVibes project. The European Union-funded project CargoVibes involved 10 partners from 8 nations and ran from April 2011 to April 2014. The project was concerned with railway-induced ground-borne vibration affecting...
article 2015
Searched for: subject:"vibration"
(1 - 20 of 141)

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