Aspects expérimentaux et modélisation de la durée de vie en fatigue thermomécanique dans le cas des aciers Cr-Mo-V, 316 L et de l'alliage TZM

Abstract : Material's behaviour under thermomechanical conditions is one of the most important criteria studied for the conception of structures. This work shows an experimental technique drived by computer for thermomechanical fatigue tests. Three different materials were studied, Cr-Mo-V steel for turbine rotors, 316 L steel for nuclear plant, under isothermal and thermomechanical strain controlled conditions, and a TZM alloy for nuclear plant under isothermal and thermomechanical stress controlled conditions. We also tried to apply some models of life prediction such as "Taira", "spanning factor", "frequency separation", "Degallaix", and "Gilgert"
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Christophe Korn. Aspects expérimentaux et modélisation de la durée de vie en fatigue thermomécanique dans le cas des aciers Cr-Mo-V, 316 L et de l'alliage TZM. Mécanique des matériaux [physics.class-ph]. Université Paul Verlaine - Metz, 1988. Français. ⟨NNT : 1988METZ015S⟩. ⟨tel-01775757⟩

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