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Broek, D. (author), Schijve, J. (author), Nederveen, A. (author)The effect was studied of artificial aging (up to and beyond maximum hardness, both with and without prior solution heat treatment) on the crack propagation in 2024-T3 alclad sheet. All heat treatments caused a noticeable increase of the rate of crack propagation, which was correlated with a decrease of ductility. The correlation is discussed...report 1963
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Schijve, J. (author)Tests were carried out on center section wing panels of 7075 material. The loading was based on strain gage records obtained by flying in turbulent air. Load sequences applied include random loading and programmed loading, with and without ground-to-air cycles. A testing machine was developed for this purpose. Data are presented on critical...report 1963
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- Broek, D. (author), Schijve, J. (author) report 1963
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- Schijve, J. (author) report 1962
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Schijve, J. (author), Broek, D. (author)This paper deals with crack propagation under programme-fatigue loading; the programme being derived from a gust spectrum. The validity of the Palmgren-Miner rule for crack propagation has been studied and its usefulness for design purposes is discussed.report 1962
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Schijve, J. (author), Broek, D. (author), Jacobs, F.A. (author)Fatigue tests have been carried out on light alloy lugs of 2024 and 7075 material in order to investigate the effects of some geometrical parameters (lug size, geometry of lug) and various means to reduce fretting, viz. lubrication of the pin, flattened pins, slotted holes and expanded holes. Complete S-N curves have been determined at a...report 1962