Numéro : 2592 - Year : 2010
Fast strategy for the prevision of the fatigue strength of a cast alloy for high cycles: application to material for marine propellers
Anthony EZANNO, ENSIETA – LBMS (EA 4325)
Cédric DOUDARD, ENSIETA – LBMS (EA 4325)
Sylvain CALLOCH, ENSIETA – LBMS (EA 4325)
Thierry MILLOT, DCNS-CESMAN
Jean-Loup HEUZÉ, DGA – DET/CEP/MC/TCM
It is proposed to develop and to identify a probabilistic two-scale model for High Cycle Fatigue of cast alloys. The proposed approach accounts for the failure of samples but also for the thermal effects during cyclic loadings in a unified framework. A fast method of identification is then proposed. This method uses temperature measurements under cyclic loadings. The validation of the model is obtained by predicting S/N curves and the scatter in High Cycle Fatigue properties.