Searched for: subject%3A%22heating%22
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van der Vet, W.J. (author)
Military aircraft flying low level missions in Western Europe encounter a very different environment from that in most of the United States. Industrial pullution causes atmospheric moisture to be highly acid, and the corrosion rate of jet engine components is greatly increased, with consequent high maintenance costs. To help combat this problem...
report 1977
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Schra, L. (author), van Leeuwen, H.P. (author)
The influence of previous corrosion on the fatigue life was investigated. It was foimd that a slight corrosive attack could drastically reduce the fatigue life. The damaging effect of corrosion was greater for the alloy AA 7050 than for AZ 74.61. It could be established that fatigue cracks initiated from various corrosion pits. A second series...
report 1977
document
Schra, L. (author), van Leeuwen, H.P. (author), Meulman, A.E. (author)
The fatigue crack propagation performance of the alloy AZ 74.61 under manoeuvre spectrum loading was studied. The crack propagation behaviour was also compared with that of the American forging alloy AA 7050, not only for simulated manoeuvre loading but also for simulated gust loading and programme loading. It was found that, at comparable...
report 1976
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Delil, A.A.M. (author)
The scope of this report is: - to give a short description of the possible operation principles and applications of heat pipes - to derive the governing equations for a model of a conventional heat pipe (including the limits to the heat transfer capability) - to describe the theoretical derivation of the formulae for the various thermal...
report 1976
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Delil, A.A.M. (author), Heemskerk, J.F. (author)
The thermal performance of multilayer insulation hlankets depends on three (interacting) modes of energy transfer: radiation between the radiation shields, gas conduction in the residual interstitial gas and solid conduction via the contacting interfaces. The contribution of the gas conduction depends on the interstitial gas and its pressure,...
report 1976
document
Schra, L. (author), van Leeuwen, H.P. (author)
The effect of variety of heat treatments on various engineering properties was studied with the aim to derive an optimum heat treatment. The engineering properties comprised Vickers hardness, short-time tensile strength, fatigue crack propagation resistance, fracture toughness and stress corrosion resistance. The test results were compared with...
report 1976
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Wanhill, R.J.H. (author)
The requirements and problems of high temperature materials in gas turbines are reviewed, with specific reference to turbine discs, blades, vanes and combustion cans. The mechanical and environmental property requirements of these components are discussed, followed by an overview of the types of materials used. Lastly, there is a summary of the...
report 1975
document
Delil, A.A.M. (author), Heemskerk, J.F. (author)
The thermal performance of evacuated multilayer insulation blankets depends on three modes of energy transfer: radiation between the radiation shields, gas conduction m the residual interstitial gas and solid conduction via the contacting interfaces. The importance of the contributions of the three heat transfer modes depends on many parameters...
report 1975
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Wesseling, P. (author)
journal article 1975
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van Leeuwen, H.P. (author), Schra, L. (author)
Material from forgings rejected after cracking in service was given a variety of heat treatments. Material aged to peak hardness was susceptible to SCC at all ageing temperatures. Overageing at temperatures around 160° C imparted a significant increase in SCC resistance while useful strength was retained. An additional one week ageing at 160° C...
report 1973
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Verhagen, J.H.G. (author)
report 1972
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García, Á. (author), Schlangen, E. (author), Van de Ven, M. (author), Van Vliet, D. (author)
The objective of this research is to examine the induction heating of mastic through the addition of electrically conductive fillers and fibers (graphite and steel wool), and to prove that this material can be healed with induction energy. The effect of fibers content, sand–bitumen ratio and the combination of fillers and fibers on the induction...
journal article
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García, A. (author), Schlangen, E. (author), Van de Ven, M. (author), Van Vliet, D. (author)
It is well known that the healing rates of asphalt courses increase with the temperature. A new method, induction heating, is used in this paper to increase the lifetime of asphalt concrete pavements. Mastic will be first made electrically conductive by the addition of conductive fibers. Then it will be heated via induction energy. This will...
journal article
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Van Dijk, T. (author)
Geothermal energy is rapidly gaining in popularity, thanks in part to ambitious climate goals and steep gas prices. TU Delft plans to pump up hot geothermal water from deep in the ground to heat the university’s buildings.
journal article
Searched for: subject%3A%22heating%22
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