Searched for: collection%3Air
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Lahuerta Calahorra, F. (author)
Thick Laminates (above 6mm) are increasingly present in large composites structures such as wind turbine blades. Designs are based on static and fatigue coupon tests performed on 1-4mm thin laminates. However, a thickness effect has been observed in limited available experimental data. For this reason standard experimental data cannot...
doctoral thesis 2017
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Yao, L. (author)
Advanced composite materials have been commonly used in aerospace engineering, because of their good mechanical properties and attractive potential for creating lightweight structures. Susceptibility to delamination is one of the most important issues in the applications of these materials. This disadvantage can prohibit the application of...
doctoral thesis 2015
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Den Besten, J.H. (author)
Crew transfers, surveillance duties and {security, rescue, interception} operations at sea typically require high-speed craft. Aluminium is quite often selected as hull structure material because of its weight save potential in comparison to steel. The fatigue strength, however, may become a point of concern because of the decreased Young’s...
doctoral thesis 2015
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Bürger, D.B. (author)
Aerospace structures have been long dealing with the safety versus weight issue. Lighter airplanes are cheaper to operate, however, they may face a safety issue because of the reduced fatigue life. Consequently, a heavier/safer structure is designed. Adhesive bonding is a joining technique that offers potential for improvement in the fatigue...
doctoral thesis 2015
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Mohajeri, M. (author)
Hot mix asphalt recycling has become common practice all over the world since the 1970s because of the crisis in oil prices. In the Netherlands, hot recycling has advanced to such an extent that in most of the mixtures more than 50% of reclaimed asphalt (RA) is allowed. These mixtures with such a high RA content are produced in a batch plant to...
doctoral thesis 2015
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Chougrani, K. (author)
Detection and sizing of closed cracks is challenging as these cracks exhibt a transparent behavior when interacting with ultrasonic waves. To face this challenge, high amplitude ultrasonic waves are used by which harmonics are generated at the crack interface. Exploting this non-linear response, the probability of detection and sizing of such...
doctoral thesis 2014
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Van den Bergh, W. (author)
Nowadays, reclaimed asphalt aggregate is often used in new asphalt mixtures. In Flanders, up to 50 % of the binder content is allowed to be originating from reclaimed asphalt. However, the effect of this aged binder on the fatigue and healing properties of the asphalt mixture is questioned. A procedure for the ageing of asphalt mixtures, mortars...
doctoral thesis 2011
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Van der Cammen, J.J. (author)
The fatigue life of structural members is an important aspect in the hull design of a Floating Production Storage and Offloading unit (FPSO). In contrast to the design for ultimate conditions, a fatigue assessment requires a thorough knowledge of the long-term environment to which the unit is exposed and how the unit is operated to estimate an...
doctoral thesis 2008
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Lappa, E.S. (author)
Recently, a number of high strength and ultra high strength steel fibre concretes have been developed. Since these materials seem very suitable for structures that might be prone to fatigue failure, such as bridge decks, the understanding of the static and fatigue bending behaviour is vital. In order to evaluate the bending behaviour of high and...
doctoral thesis 2007
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de Jong, F.B.P. (author)
This dissertation presents the research into renovation techniques for orthotropic steel bridge decks. These techniques are needed to solve fatigue problems in the decks of these bridges, as several fatigue cracks have been detected in the deck structure of these bridges the last decade. A well-known example of fatigue cracks are those observed...
doctoral thesis 2007
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Nijssen, R.P.L. (author)
Wind turbine rotor blades are subjected to a large number of highly variable loads, but life predictions are typically based on constant amplitude fatigue behaviour. Therefore, it is important to determine how service life under variable amplitude fatigue can be estimated from constant amplitude fatigue behaviour. A life prediction contains...
doctoral thesis 2006
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van der Tempel, J. (author)
To meet growing energy demands, the Kyoto protocol and the much desired diversification of supply, wind energy has become a mainstream source of energy in the EU. Cost wise it is already competing with gas fired electricity. In the last decade wind moved offshore to accommodate even more wind power. The offshore wind resource is more abundant...
doctoral thesis 2006
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Randell, C.E. (author)
The investigation of the present thesis is concerned with the fatigue crack growth behaviour of part through the thickness cracks in Glare™ fibre metal laminate (FML) subjected to combined tension and bending. An experimental program was executed which required the development of a novel fatigue specimen, the Milled Open Hole Tension Bending ...
doctoral thesis 2005
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De Rijck, J.J.M. (author)
The two historical fuselage failures, Comet in 1954 and Aloha in 1988, illustrate that similar accidents must be avoided which requires a profound understanding of the fatigue mechanisms involved, including analytical models to predict the fatigue behavior of riveted joints of a fuselage structure. The scope of the research project covers a...
doctoral thesis 2005
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Alderliesten, R.C. (author)
Fibre Metal Laminate Glare consists of thin aluminium layers bonded together with pre-impregnated glass fibre layers and shows an excellent fatigue crack growth behaviour compared to monolithic aluminium. The fibres are insensitive to the occurring fatigue loads and remain intact while the fatigue cracks occur in the aluminium layers. As a...
doctoral thesis 2005
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Shabakhty, N. (author)
A variety of factors is governing the operational conditions of jack-up platforms. The platforms are moved to different locations, which are causing changes in water depth, environmental and seabed conditions, drilling depths, payload etc. Insight should be gained in how the different factors affect the lifetime in order to be able to make a...
doctoral thesis 2004
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Kühn, M.J. (author)
doctoral thesis 2001
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Riemslag, A.C. (author)
doctoral thesis 1997
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Müller, R.P.G. (author)
doctoral thesis 1995
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Romeijn, A. (author)
doctoral thesis 1994
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