Abstract

La vitesse de propagation de fissure de fatigue augmente lorsque la temperature augmente (−30-100°C) et quand la frequence diminue (100, 50, 10, 1 Hz) et elle atteint un maximum pres de 80°C et a 10 Hz. La variation avec la frequence de la vitesse de fissuration predite par le modele de Michel-Manson est correcte jusqu'a environ 80°C. L'energie d'activation de la fissuration augmente avec le facteur d'intensite de contrainte

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