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Krupp, U.; Floer, W.; Hu, Y.M.; Christ, H.J.; Schick, A.; Fritzen, C.P.
Mechanism-orientated life prediction for metal components under cyclic stress. DFG interim colloquium2000
Mechanism-orientated life prediction for metal components under cyclic stress. DFG interim colloquium2000
AbstractAbstract
[en] Up to 90% of the life time of cyclically loaded components is determined by short crack initiation and propagation. This stage of the fatigue damage process is strongly influenced by microstructural features, e.g. grain boundaries and crystallographic grain orientation. Therefore LEFM can not be applied in a reasonable manner explaining the demand for a mechanism-related modelling method. The present study deals with mechanical testing and microstructural examinations applied to the relatively new β-titanium alloy LCB. The results are used as data base to develop a new short crack model that is based on the model of Navarro and de los Rios. By using various techniques such as electron back-scattered diffraction and finite-element calculations the origin of crack initiation is revealed and the characteristics of crack propagation is determined. (orig.)
Original Title
Experimentelle Erfassung und modellmaessige Beschreibung der Rissbildung und des Kurzrisswachstums zur Vorhersage der Ermuedungslebensdauer einer β-Titanlegierung
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Deutscher Verband fuer Materialforschung und -pruefung e.V., Berlin (Germany); 186 p; 2000; p. 165-186; DFG interim colloquium: Mechanism-orientated life prediction for metal components under cyclic stress; DFG-Zwischenkolloquium: Mechanismenorientierte Lebensdauervorhersage fuer zyklisch beanspruchte metallische Bauteile; Bremen (Germany); 24-25 Feb 2000; Available from TIB Hannover
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