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- van Leeuwen, H.J. (author) master thesis 1992
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- van Leeuwen, H.J. (author) report 1992
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- Nijmeijer, M.J.P. (author), Bruin, C. (author), Bakker, A.F. (author), van Leeuwen, J.M.J. (author) journal article 1991
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- Jankipersad, K.J. (author), van Leeuwen, W.A. (author) master thesis 1990
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van Leeuwen, H.P. (author), Groep, F.F. (author), Schra, L. (author), Dam, N. (author)Test results reported in the literature show that in creep cracking tests at elevated temperature under steady load, the crack growth rate correlates best with the contour integral C*, also called J*, in comparison to other possible parameters. In the case of fatigue at elevated temperature, the crack growth rate correlates best with C* if...report 1987
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Groothuizen, R.J.P. (author), van den Berg, J.I. (author), van Leeuwen, W. (author)Design of robots is an iterative process. Therefore software tools for analysis of different concepts without the need to build hardware models are required. The software tool ROBDYN can be used for analysis of the dynamics properties of a robot. Main constituents are a dynamics algorithm and a facility for the preand postprocessing of data. The...report 1986
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- van Leeuwen, J.P.H. (author) master thesis 1986
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- van Leeuwen, J.P.H. (author) master thesis 1986
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- van Leeuwen, J.P.H. (author) master thesis 1986
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- van Leeuwen, J.P.H. (author) master thesis 1986
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- van Leeuwen, J.P.H. (author) master thesis 1986
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van Leeuwen, H.P. (author)The concept of fugacity is explained. Application of compressibility and fugacity data in hydrogen embrittlement calculations is discussed. Equations of state are reviewed. Compressibility factors and fugacity coefficients are calculated. A best estimate is proposed.report 1983
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van Leeuwen, H.P. (author)The literature concerning the application of fracture mechanics to the growth of creep cracks is discussed. As an introduction it is shown that linear elastic fracture mechanics have been applied successfully to the residual strength of brittle materials crack growth due to stress corrosion and crack growth due to fatigue. Next the methods are...report 1983
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ten Have, A.A. (author), Nederveen, A. (author), de Jonge, J.B. (author), van Leeuwen, H.P. (author)This memorandum presents results of crack propagation tests on notched Alclad 2024-T351 sheet specimens. Two thicknesses were investigated (2 mm and 8 mm), as well as various spectrum modifications and the effect of clustering of severe flights within the test load sequence.report 1982
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- van Leeuwen, P. (author) public lecture 1982
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- van Leeuwen, J.L. (author), Wardenier, J. (author) report 1982
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van Leeuwen, H.P. (author), de Rijk, P. (author), Boogers, J.A.M. (author), Huisman, H.N. (author), Wanhill, R.J.H. (author)Circumferentially notched round specimens of 4340 type steel have been plated in a galvanic bath known to be embrittling. The specimens were reclaimed by stripping and baking. Half the specimens were replated in a non-embrittling bath. Reclamation did not remove all traces of hydrogen embrittlement, but raised the threshold stress to such a...report 1979
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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
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Schra, L. (author), van Leeuwen, H.P. (author)The tip of a growing stress corrosion crack was photographed at a magnification of 72 x and at 30 sec. intervals. The crack appeared to grow in a discontinuous manner. Crack reinitiation was preceded or accompanied by gas evolution.report 1977
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- Scholte, H.G. (author), van Leeuwen, R.T. (author) report 1977