Savaidis, Georgios ; Savaidis, Alexander ; Zerres, Patrick ; Vormwald, Michael (2010)
Mode I fatigue crack growth at notches considering crack closure.
In: International Journal of Fatigue, 32 (10)
Artikel, Bibliographie
Kurzbeschreibung (Abstract)
Fn analytical elastic–plastic model is presented describing the fatigue life of arbitrary engineering components with elliptical notches under constant amplitude loading. A DJeff-based crack growth law is integrated from a starting crack size of micro-structural dimension up to the total fracture of the component. Plasticity-induced crack opening and closure effects are explicitly taken into account. Calculated opening load levels for cracks growing in notch affected areas have been found to be in good agreement with corresponding experimental values determined from notched specimens made of two different metallic materials. Comparison of experimentally determined and calculated crack growth curves for specimens with central notches confirm the satisfactory accuracy of model. The experimental verification of the model’s calculation accuracy covers various ductile materials, notch geometries, load amplitudes and mean load effects.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2010 |
| Autor(en): | Savaidis, Georgios ; Savaidis, Alexander ; Zerres, Patrick ; Vormwald, Michael |
| Art des Eintrags: | Bibliographie |
| Titel: | Mode I fatigue crack growth at notches considering crack closure |
| Sprache: | Englisch |
| Publikationsjahr: | März 2010 |
| Verlag: | Elsevier |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | International Journal of Fatigue |
| Jahrgang/Volume einer Zeitschrift: | 32 |
| (Heft-)Nummer: | 10 |
| Kurzbeschreibung (Abstract): | Fn analytical elastic–plastic model is presented describing the fatigue life of arbitrary engineering components with elliptical notches under constant amplitude loading. A DJeff-based crack growth law is integrated from a starting crack size of micro-structural dimension up to the total fracture of the component. Plasticity-induced crack opening and closure effects are explicitly taken into account. Calculated opening load levels for cracks growing in notch affected areas have been found to be in good agreement with corresponding experimental values determined from notched specimens made of two different metallic materials. Comparison of experimentally determined and calculated crack growth curves for specimens with central notches confirm the satisfactory accuracy of model. The experimental verification of the model’s calculation accuracy covers various ductile materials, notch geometries, load amplitudes and mean load effects. |
| Freie Schlagworte: | Fracture mechanics Crack growth Crack closure Notches Fatigue life prediction |
| Fachbereich(e)/-gebiet(e): | 13 Fachbereich Bau- und Umweltingenieurwissenschaften > Institut für Stahlbau und Werkstoffmechanik > Fachgebiet Werkstoffmechanik 13 Fachbereich Bau- und Umweltingenieurwissenschaften > Institut für Stahlbau und Werkstoffmechanik 13 Fachbereich Bau- und Umweltingenieurwissenschaften |
| Hinterlegungsdatum: | 30 Jan 2015 13:40 |
| Letzte Änderung: | 19 Mär 2015 08:59 |
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