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Eijk, A. (author), Egas, G. (author), Smeulers, J.P.M. (author), Technisch Physische Dienst TNO - TH (author)
In systems with large reciprocating compressors, so-called compressor manifold vibrations can contribute to fatigue failure of the pipe system. These vibrations are excited by pulsation-induced forces and by forces generated by the compressor. This paper describes an advanced and accurate method for predicting vibration levels and cyclic...
article 1996
document
van Straalen, IJ.J. (author)
During tthe 1990's the higher-order theory was developed by Frostig to enable detailed stress analyses of sandwich panel structures. To investigate the potentials of this approach experiments are performed on sandwich panels made of thin steel faces and mineral wool or polystyrene core material. A proposal for a useful prediction model based on...
conference paper 2000
document
den Broeder, F.J.A. (author), Hanzen, R.M.N. (author), Duine, P.A. (author), Jungblut, R.M. (author), Draijer, C. (author), Roozeboom, F. (author), van der Sluis, P. (author)
A description is given of an optical switching device (1) comprising a transparent substrate (3), a switching film (5) of a hydride compound of a trivalent transition or rare earth metal having a thickness of 300 nm, and a palladium capping layer (7) having a thickness of 30 nm. The capping layer is in contact with hydrogen. An electric current...
patent 2000
document
Davies, P. (author), Bigourdan, B. (author), Chaudot, P. (author), Choqueuse, D. (author), Ferreira, A. (author), Karjalainen, J.P. (author), Hildebrand, M. (author), Mustakangas, M. (author), Gaarder, R. (author), Carli, F. (author), van Straalen, IJ.J. (author), Sargent, J.P. (author), Adams, R.D. (author), Broughton, J. (author), Beevers, A. (author)
This paper presents results from analytical and finite elenent modelling of the response of a wide foam core sandwich beam to uniform pressure loading. New tests have been performed using an image analysis system which allows core shear strain mapping. Predicted panel displacenpnts and strains are compared with npasured values for load levels...
conference paper 2000
document
van Straalen, IJ.J. (author)
The design of structures is concemed with the generation of solutions and the verification of the reliability. potential design solutions are a result of a process of problem formulation, definition of objeciive functions, conceptual design and optimization. To control this process, many strategies have been developed over the years. An example...
conference paper 2000
document
van Straalen, IJ.J. (author)
This paper deals with the development of design rules for structural adhesive bonded joints. In daily practice engineers are confronted with the problem to verify the safety of their designs. Setting up an experimental programme can do this. For the marine, transport, building and civil engineering sectors this will not be an option, because it...
conference paper 2000
document
van Straalen, IJ.J. (author)
public lecture 2000
document
Roozeboom, F. (author), Duine, P.A. (author), van der Sluis, P. (author)
A furnace (1) for Rapid Thermal Processing of a wafer (7), characterized in that the wafer (7) is heated by lamps (9), and the heat radiation is reflected by an optical switching device (15,17) which is in the reflecting state during the heating stage. During the cooling stage of the wafer (7), the heat is absorbed by the switching device (15,17...
patent 2000
document
Johnson, M.T. (author), Roozeboom, F. (author), van Delden, M.H.W.M. (author)
Magnetic heads comprising at least one core portion of polycrystalline MnZn-ferroferrite material exhibit a very low so-called "rubbing noise" level if the average grain size of the material ranges between 0.2 and 3.0 micrometers. The rubbing noise level of these heads is even lower than the electronic noise level if the average grain size of...
patent 2000
document
van den Tillaart, E. (author), Mourad, S. (author), Lupker, H. (author), TNO Wegtransportmiddelen (author)
In this paper TNO-Advance is presented. It is built in a modular way, therefore allowing quick assembling of specific vehicle configurations and easy integration of new component models and future evolutions of existing models. Its entensive library is built in Matlab/Simulink, taking advantage of its flexible and open architecture, the...
conference paper 2001
document
Botter, H. (author), van den Berg, A. (author), Soetens, F. (author), van Straalen, IJ.J. (author), Vogelesang, L.B. (author), TNO Bouw (author)
Using two types of adhesively bonded aluminium joints, a TAST specimen and a specifically designed stiff double lap joint, experiments show that the (apparent) yield stress, the amount of plastic flow and the occurence of strain hardening is influenced by the surface pre-treatment used for an Al-Mg-Si aluminium alloy adherend. Grit blasted...
conference paper 2001
document
van Straalen, IJ.J. (author), TNO Bouw (author)
article 2001
document
van Straalen, IJ.J. (author), TNO Bouw (author)
Dit artikel behandelt de ontwikkeling van rekenregels voor het ontwerpen van lijmverbindingen in constructies. In de dagelijkse praktíjk worden constructeurs geconfronteerd met het probleem om de veiligheid van hun ontwerpen te controleren. De opzet van een experimenteel programma kan hierin voorzien. Voor de scheepvaart, de transportsector, de...
article 2001
document
Botter, H. (author), Kool, H.D.M. (author), van Straalen, IJ.J. (author), Soetens, F. (author), TNO Bouw (author)
conference paper 2001
document
Botter, H. (author), Wijen, H.L.M. (author), van den Berg, A. (author), Soetens, F. (author), van Straalen, IJ.J. (author), Vlot, A. (author), TNO Bouw (author)
Recent developments in hardware and software have allowed traditional speckle pattern. interferom.etry using photographic film to be replaced by digital video CCD cameras and sophisticated analysing software. Real-time in-situ displacement measurement of specimens under static or cyclic loads is now possible. In this paper the use of an...
conference paper 2001
document
van Straalen, IJ.J. (author), TNO Bouw (author)
doctoral thesis 2001
document
Maljaars, J. (author), Steenbergen, H.M.G.M. (author), Stark, J.W.B. (author), Abspoel, R. (author), TNO Bouw (author)
The lateral torsional buckling resistance of girders depends on the support conditions. In floor structures for buildings, coped girders are often used. A numerical model was developed to research the influence of copes on lateral buckling resistance. The model is successfully validated with tests. This paper describes the background of the...
conference paper 2002
document
van Straalen, IJ.J. (author), TNO Bouw (author)
public lecture 2002
document
van Straalen, IJ.J. (author), TNO Bouw (author)
conference paper 2002
document
Hooijschuur, E.W.J. (author), Kientz, C.E. (author), Brinkman, U.A.T. (author)
Today, the determination of chemical warfare agents (CWAs) is an important area of application in analytical chemistry. Chromatographic, capillary electrophoretic and mass spectrometric techniques are primarily used for the identification and quantification of a broad field of classical CWAs in environmental samples and neutralization masses,...
article 2002
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