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Bosschaart, C. (author), Jansen, H.W. (author), de Jong, C.A.F. (author), Basten, T. (author)
A concept for underwater machinery noise mitigation of future civil and military ships is the application of a common deck structure, supporting multiple machines, which is installed on resilient mounts on the ship's foundation structure. TNO is addressing the availability and testing of tools to be able to set realistic targets for the radiated...
conference paper 2017
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van der Walle, P. (author), Kramer, E. (author), van der Donck, J.C.J. (author), Mulckhuyse, W.F.W. (author), Nijsten, L. (author), Bernal Arango, F.A. (author), de Jong, A. (author), van Zeijl, E. (author), Spruit, H.E.T. (author), van den Berg, J.H. (author), Nanda, G. (author), van Langen-Suurling, A.K. (author), Alkemade, P.F.A. (author), Pereira, S.F. (author), Maas, D.J. (author)
Particle defects are important contributors to yield loss in semi-conductor manufacturing. Particles need to be detected and characterized in order to determine and eliminate their root cause. We have conceived a process flow for advanced defect classification (ADC) that distinguishes three consecutive steps; detection, review and classification...
conference paper 2017
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van der Schans, M.J. (author), van der Meer, J.A. (author), Olivier, R.C.M. (author), Busker, R.W. (author), Voorsluijs, G.M. (author), de Jong, A.J. (author)
The awareness of the possible presence of toxic chemical compounds at and around military compounds and other critical infra structures is crucial and normally monitored by point detectors. The disadvantage of these type of detectors is that large quantities (organized in a network) are needed when a large area is to be controlled. Secondly...
conference paper 2016
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de Jong, A.J. (author), van Vliet, L.D. (author), Hoegaerts, C.L.G. (author), Roelands, C.P.M. (author), Cuypers, R. (author)
Long-term and compact storage of solar energy is crucial for the eventual transition to a 100% renewable energy economy. For this, thermochemical materials provide a promising solution. The compactness of a long-term storage system is determined by the thermochemical reaction, operating conditions, and system implementation with the necessary...
conference paper 2016
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Ainslie, M.A. (author), de Jong, C.A.F. (author)
Because of the history of sonar and sonar engineering, the concept of “source level” is widely used to characterize anthropogenic sound sources, but is it useful for sources other than sonar transmitters? The concept and applicability of source level are reviewed for sonar, air guns, explosions, ships, and pile drivers. International efforts...
conference paper 2016
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Erbe, C. (author), Ainslie, M.A. (author), de Jong, C.A.F. (author), Racca, R. (author), Stocker, M. (author)
As concern about anthropogenic noise and its impacts on marine fauna is increasing around the globe, data are being compared across populations, species, noise sources, geographic regions, and time. However, much of the raw and processed data are not comparable due to differences in measurement methodology, analysis and reporting, and a lack of...
conference paper 2016
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Thomsen, F. (author), Borsani, F. (author), Clarke, D. (author), de Jong, C. (author), de Wit, P. (author), Goethals, F. (author), Holtkamp, M. (author), Martin, E.S. (author), Spadaro, P. (author), van Raalte, G. (author), Victor, G.Y.V. (author), Jensen, A. (author)
The World Organization of Dredging Associations (WODA) has identified underwater sound as an environmental issue that needs further consideration. A WODA Expert Group on Underwater Sound (WEGUS) prepared a guidance paper in 2013 on dredging sound, including a summary of potential impacts on aquatic biota and advice on underwater sound monitoring...
conference paper 2016
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Bolle, L.J. (author), de Jong, C.A.F. (author), Bierman, S.M. (author), van van Beek, P.J.G. (author), Wessels, P.W. (author), Blom, E. (author), van Damme, C.J.G. (author), Winter, H.V. (author), Dekeling, R.P.A. (author)
Concern exists about the potential effects of pile-driving sounds on fish, but evidence is limited, especially for fish larvae. A device was developed to expose larvae to accurately reproduced pile-driving sounds. Controlled exposure experiments were carried out to examine the lethal effects in common sole larvae. No significant effects were...
conference paper 2016
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Jansen, H.W. (author), de Jong, C.A.F. (author)
The aim of the SONIC project is to develop tools to investigate and mitigate the effects of underwater noise generated by shipping. One way to study the contribution of shipping noise to the background noise in the seas is to produce shipping noise maps. The SONIC project delivers the required technical knowledge for noise mapping, based on a...
conference paper 2015
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Colin, M.E.G.D. (author), Ainslie, M.A. (author), Binnerts, B. (author), de Jong, C.A.F. (author), Karasalo, I. (author), Östberg, M. (author), Sertlek, H.O. (author), Folegot, T. (author), Clorennec, D. (author)
The SONIC (Suppression Of underwater Noise Induced by Cavitation) and AQUO (Achieve QUieter Oceans by shipping noise footprint reduction) projects were awarded within the European Seventh Framework Program to develop tools to investigate and mitigate the effects of underwater sound generated by shipping activities on marine life. Model generated...
conference paper 2015
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Vos, H.J. (author), van Neer, P.L.M.J. (author), Verweij, M.D. (author), de Jong, N. (author), Volker, A.W.F. (author)
Three-dimensional (3D) high resolution beamforming is made more difficult by high data rates. This can be overcome by two-step imaging approaches such as the synthetic aperture beamforming technique. In this technique the first step significantly reduces the data rate by line-based delay and sum, whereas the second stage recombines the data to a...
conference paper 2015
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Basten, T.G.H. (author), de Jong, C.A.F. (author), Graafland, F. (author), van 't Hof, J. (author)
Acoustic signatures make naval platforms susceptible to detection by threat sensors. The variable operational conditions and lifespan of a platform cause variations in the acoustic signature. To deal with these variations, a real time signature monitoring capability is being developed, with advisory tools for signature management. Such a...
conference paper 2015
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van Erp, J.B. (author), Toet, A. (author), Meijer, K. (author), Janssen, J. (author), de Jong, A. (author)
We developed active tangibles (Sensators) that can be used in combination with multitouch tabletops and that can provide multisensory (visual, auditory, and vibrotactile) feedback. For spatial alignment and rotation tasks we measured subjective user experience and objective performance with these Sensators. We found that active feedback...
conference paper 2015
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Roelands, C.P.M. (author), Cuypers, R. (author), Kruit, K.D. (author), Oversloot, H.P. (author), de Jong, A.J. (author), Duvalois, W. (author), van Vliet, L. (author), Hoegaerts, C.L.G. (author)
Bottlenecks for realizing a commercial system for thermochemical heat storage (TCS) with hygroscopic salts are the chemical, physical and mechanical stability of the salt under operation conditions. Hence, improved knowledge of thermochemical materials (TCMs) is critical to spur progress in TCS system development. Sodium sulfide hydrates (Na2S...
conference paper 2015
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Fillinger, L. (author), Nijhof, M.J.J. (author), de Jong, C.A.F. (author)
A decade ago, TNO developed RASP (Rapid Acoustic Signature Prediction), a numerical model for the prediction of the target strength of immersed underwater objects. The model is based on Kirchhoff diffraction theory. It is currently being improved to model refraction, angle dependent reflection and transmission (possibly through anisotropic...
conference paper 2014
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Ainslie, M.A. (author), Dahl, P.H. (author), de Jong, C.A.F. (author), Laws, R.M. (author)
Geometrical spreading laws are widely used in underwater acoustics because they provide - if chosen carefully - an accuracy that is sufficient for many applications (source characterisation, impact assessment, sound mapping, regulation) for negligible computation time. The simplest and most widely used form is that corresponding to spherical...
conference paper 2014
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Majchrzykiewicz-Koehorst, J.A. (author), Heikens, E. (author), Trip, H. (author), Hulst, A.G. (author), de Jong, A.L. (author), Viveen, M.C. (author), Sedee, N.J.A. (author), van der Plas, J. (author), Coenjaerts, F.E.J. (author), Paauw, A. (author)
Tested respiratory viruses: influenza A virus, respiratory syncytial virus (RSV) and human metapneumovirus (hMPV), were successfully identified directly from crude cell cultures using liquid chromatography-tandem MS (LC-MS/MS). The identification was preceded with the simple, generic and fast sample preparation method. The determined...
conference paper 2014
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Fillinger, L. (author), Mantouka, A. (author), de Jong, C.A.F. (author), Gloza, I. (author), Sanchez, A. (author), Moya, E. (author), Schael, S. (author), Lennartsson, T. (author), Petit, G. (author), Fardal, R. (author), Hasenpflug, H. (author), Beckers, A.L.D. (author)
SIRAMIS is a project coordinated by the European Defence Agency standing for Signature Response Analysis on Multi Influence Sensors. As most of the international trade is carried out through marine routes, it is important to evaluate the vulnerability of the merchant vessel fleet to sea mines in order to be able to limit the potential exposure...
conference paper 2014
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Violato, D. (author), de Jong, A.T. (author), Golliard, J. (author)
This paper focuses on the scalability of broadband turbulent noise in internal pipe flows. It discusses a universal scaling approach for broadband turbulent noise that is based on surface acoustic power modeled by ANSYS Fluent. This investigation proposes a strategy for amplitude scaling at frequencies above the onset frequency for non-planar...
conference paper 2014
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Leinders, S.M. (author), van Dongen, K.W.A. (author), de Jong, N. (author), Verweij, M.D. (author), Westerveld, W.J. (author), Urbach, H.P. (author), van Neer, P.L.M.J. (author), Pozo Torres, J.M. (author)
Several types of ultrasound sensors have been developed and are used in the field of medical imaging. Conventional transducers are made of piezo-electric material and show good practical performance. However, when the piezo-electric elements need to be small (below 100 μm × 100 μm), these transducers face challenges in fabrication as well as the...
conference paper 2014
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