Abstract
Statistical fatigue tests in rotating bending were carried out by using round bar specimens of alumina ceramics, in which fatigue life distributions were examined at five stress levels by assigning 20 specimens to each level. Based on these results, the probabilistic fatigue property of this material was given as the quantitative P-S-N characteristics in wide range of fatigue life 1 < N < 10 8 . Furthermore, SEM observations were made on the fracture surfaces, and the effect of material defects on the fatigue life was also discussed.
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