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Boersma, G. (author), Sonnenschein, F.J. (author)
The potentials of a double glmballed mcwientum wheel as an actuator for the attitude oontrol of a geostationary communication satellite are discussed with respect to the related systems. A justification of the IXaW is given and the characteristics defining the wheel system are determined. They can serve to be the input to a detailed design of an...
report 1975
document
Hameetman, G.J. (author)
The infra Red Astronomical Satellite IRAS will be laimched in February I98I for a mission of one year duration. The purpose of the mission is to produce a full sky catalogue in the infrared waveband. The IRAS satellite will be equipped with an on-board computer system to control the satellite and to execute the measurements necessary to fulfil...
report 1977
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de Graaf, E.A.B. (author), de Rijk, P. (author)
The present report describes how fatigue cracks were produced in 102 specimens. After cracking these specimens were inspected non-destructively by means of eddy currents, ultrasonics. X-rays and penetrants, and the indications were recorded. Successively the specimens were exposed to corrosion whereafter the inspections were repeated. Upon...
report 1978
document
Dekker, G.J. (author)
Modern commercial transport aircraft contain digital avionics systems for more and more safety critical functions. The reliability and safety of those new systems depend on the hardware reliability and on the reliability of the embedded software. In this report, an overview is given of available methods and techniques to develop reliable...
report 1982
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Nicolai, R.J. (author)
The infrared Astronomical Satellite IRAS is equipped with an on-board computer system that takes care of vital satellite functions as attitude control, ground dialogue and execution of the observation programs. Therefore an important purpose of the IRAS system tests was the Verification and Validation of the on-board software. The test...
report 1983
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Heida, J.H. (author)
This report describes the concept of reliability of nondestructive inspection (NDI) and reviews the different aspects involved. First, the probability of detection (POD) of flaws in flawed specimens is discussed. To provide a measure of confidence in an estimated POD, lower botind values of this probability at a given confidence level are...
report 1984
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van der Laan, F.B. (author), Meijer, P.G. (author)
This paper examines the possibilities of using Landsat Thematic Mapper images for updating land-use information on topographic maps. Information obtained from satellite images can be kept up-todate and a large number of classes can be distinguished. However, the quality of the information still leaves much to be desired, with a reliability of no...
report 1988
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Uittenbogaard, R.E. (author)
report 1992
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Burcharth, H.F. (author)
In general a safety factor or a conventional partial coefficient is used for the design of structures at sea. These methods are classified as Level I (deterministic) methods. However, such approaches do not allow the determination of the reliability (or the failure probability) of the design, and consequently it is neither possible to optimize,...
report 1992
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Lamberti, A. (author)
During the last few decades the believe that absolute security could be provided has been recognized to be mistaken in many branches of engineering. This happens as a consequence of the imperfect predictability of load intensity, structural characteristics and structural behavior, as well as a consequence of human gross errors during the design...
report 1992
document
Colamussi, A. (author)
The project to protect Venice against periodic flooding appears to be a complex problem due to the city and surrounding environment that are extremely fragile, the presence of the port activity and the hazard of perturbation of the physical, chemical, biological equilibrium of the Venice lagoon. The mobile barriers are one of the components of a...
report 1992
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Casciati, F. (author), Natale, L. (author)
The safety analysis of marine systems is studied. One assumes that the required results of the hazard analysis are available. The identification of the appropriate performance function and the relevant reliability calculation are discussed in detail. The procedure is exemplified for some basic categories of marine systems.
report 1992
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Kaminski, M.L. (author)
doctoral thesis 1992
document
van Gestel, H.C.J.M. (author)
doctoral thesis 1994
document
Le Huy Thang, T. (author)
In designing marine and coastal structures there always exists a considerable uncertainty, especially regarding the reliability of the data to be used. This is primarily due to the stochastic nature of sea waves - one of the most complex, volatile, pertinacious and uncomprehensible of nature's forces. Indeed, even if using all the available...
report 1995
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Waarts, P. (author), Vrouwenvelder, A. (author)
In most text books on Plasticity Theory a reference is made to the famous tests performed by Stiissi and Kollbrunner in 1935. The test object was a continuous beam on four supports, loaded by a concentrated point load halfway the central span. According to a straight forward application of the theory of plasticity the load carrying capacity of...
journal article 1997
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Visser, M. (author), Wieringa, P.A. (author)
conference paper 1998
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Kooiman, A.G. (author), Walraven, C. (author)
With the increasing number of applications in practice, the demand for standardised test methods and design rules for Steel Fibre Reinforced Concrete (SFRC) arises. Test methods need to be practical, which means that they have to be relatively cheap and simple to carry out. Design models should be easy to use and reliable. This paper presents a...
journal article 2000
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Vrijling, J.K. (author), Van Gelder, P.H.A.J.M. (author)
lecture notes 2002
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Vledder, G.P. van (author), Hurdle, D.P. (author), Groeneweg, J. (author)
report 2002
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