Abstract
Existing experimental data on fatigue crack growth are summarized. A fatigue crack growth model is proposed, based on the different crack tip geometries of a loaded and unloaded crack; the model leads to predictions of the rates of growth of fatigue cracks, in certain materials, comparable to those determined experimentally.
Résumé
Les données expérimentales disponsibles sur la fissuration progressive sous chargement cyclique sont résumées. Un schéma de la fissuration progressive sous chargement cyclique est propesé, qui se base sur les differéntes formes adoptées par l'extrémité d'une fissure selon que celle-ci est sollicitée ou non; ce schéma permet une prédiction des vitesses de fissuration progressive sous chargement cyclique qui se rapproche de celles établies par détermination expérimentale.
Zusammenfassung
Bestehende, experimentelle Angaben über die Ermüdungsrissvergrösserung werden zusammengefasst. Ein auf die verscheidenen mit dem beanspruchten und nicht beanspruchten Riss verbundenen Rissspitzformen gegründetes Modell der Ermüdungsrissvergrösserung wird vorgeschlagen; es ermöglicht Vorhersagen von Ermüdungsrissvergrösserungsgeschwindigkéiten, die sich den aus gewisse Werkstoffe experimentell festgestellten gut zuordnen.
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Frost, N.E., Dixon, J.R. A theory of fatigue crack growth. Int J Fract 3, 301–316 (1967). https://doi.org/10.1007/BF00182895
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DOI: https://doi.org/10.1007/BF00182895