Crack growth in aluminium alloy sheet material under flight-simulation loading |
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| Authors: | J Schijve AM Vlutters JC ProvóKluit |
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| Affiliation: | 1. Dr. Schijve is with the Department of Aerospace Engineering, Delft University of Technology, PO Box 5058, 2600 GB Delft, The Netherlands |
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| Abstract: | Crack propagation tests were carried out on 2024-T3 sheet specimens to study the effects of omitting low-amplitude cycles from the gust-dominated TWIST load sequence (MiniTWIST) and the removal of small load ranges from the manoeuvre-dominated FALSTAFF load sequence (short FALSTAFF). In other tests high-amplitude loads of TWIST and MiniTWIST were truncated at different levels. The results are compared with data from similar test programmes, including crack initiation. Attention is paid to unstationary crack growth retardation and a transient retardation during initial crack growth started by an artificial crack. |
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| Keywords: | fatigue fatigue crack growth spectrum loading aluminum alloys |
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