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Letteratura scientifica selezionata sul tema "Titane – Fissuration"
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Articoli di riviste sul tema "Titane – Fissuration"
Chabanne, Y., C. Sarrazin-Baudoux e J. Petit. "Influence du niveau moyen de contrainte sur la fissuration par fatigue dans l'alliage de titane Ti6246". Le Journal de Physique IV 10, PR4 (marzo 2000): Pr4–271—Pr4–276. http://dx.doi.org/10.1051/jp4:2000438.
Testo completoMignot, F., V. Doquet, C. Sarrazin-Baudoux e J. Petit. "Étude micromécanique de la disparition du seuil de fissuration par fatigue d'un alliage de titane biphasé à fort Kmax". Journal de Physique IV (Proceedings) 106 (marzo 2003): 33–42. http://dx.doi.org/10.1051/jp4:20030213.
Testo completoTesi sul tema "Titane – Fissuration"
Chabanne, Yvan. "Interactions fatigue - fluage - corrosion sur la résistance à la fissuration des alliages de titane". Poitiers, 2000. http://www.theses.fr/2000POIT2272.
Testo completoChabaud, Reytier Magali. "Étude de la fissuration différée par relaxation d'un acier inoxydable austénitique stabilisé au titane". ENSMP, 1999. http://www.theses.fr/1999ENMP0914.
Testo completoHamon, François. "Modélisation du comportement mécanique en fissuration d'alliages aéronautiques". Phd thesis, Chasseneuil-du-Poitou, Ecole nationale supérieure de mécanique et d'aéronautique, 2010. http://tel.archives-ouvertes.fr/tel-00495858.
Testo completoMignot, Frédéric. "Contributions de l'hydrogène interne et du fluage à froid à l'anomalie de fissuration sous chargement cyclique du Ti6246 à fort Kmax". Palaiseau, Ecole polytechnique, 2003. http://www.theses.fr/2003EPXX0038.
Testo completoLesterlin, Sandrine. "Influence de l'environnement et de la température sur la fissuration par fatigue des alliages de titane". Poitiers, 1996. http://www.theses.fr/1996POIT2267.
Testo completoDemulsant, Xavier. "Facteurs microstructuraux gouvernant l'amorçage et la croissance des fissures de fatigue dans les alliages de titane". Poitiers, 1994. http://www.theses.fr/1994POIT2367.
Testo completoMathieu, Florent. "Analyse de la tenue mécanique d'un liner en titane : apport des mesures de champs cinématiques". Phd thesis, École normale supérieure de Cachan - ENS Cachan, 2013. http://tel.archives-ouvertes.fr/tel-00846252.
Testo completoGloanec, Anne-Lise. "Mécanismes gouvernant le comportement cyclique et la résistance à la fissuration des alliages TiAl". Poitiers, 2003. http://www.theses.fr/2003POIT2300.
Testo completoThe present study investigates the deformation mechanisms controlling the cyclic-stress-strain (CSS) behaviour and the fatigue-crack-growth (FCG) behaviour of a Ti-Al48-Cr2-Nb2 produced by casting and by powder metallurgy. The resulting microstructure is a lamellar microstructure for the casting route, while a fine equiaxed g grain microstructure is achieved by the powder metallurgy route. A detailed investigation of the CSS and the associated deformation mechanisms shows that, at room temperature, the CSS behaviour is controlled by glide of dislocations, vein-like structure or extensive twinning. Moreover the deformation microstructure is related to total-strain-amplitude. A relation is established between a pronounced cyclic strain hardening and deformation twinning. At 750ʿC, dislocation climb is shown to control the cyclic deformation. Besides, the FCG behaviour reveals that the fine equiaxed g grain microstructure exhibits the lowest resistance. This disparity of behaviour is analyzed in term of intrinsic FCG resistance and extrinsic effects such as shielding by crack closure and environmental-crack tip embrittlement
Awade, Evalo. "Rôle des facteurs microstructuraux sur l'endommagement par fatigue de l'alliage de titane bêtacez : effet de la température et de l'environnement". Poitiers, 1995. http://www.theses.fr/1995POIT2348.
Testo completoSasaki, Layla. "Influence du vieillissement sur la résistance à la fissuration par fatigue à haute température d'alliages de titane pour mâts-réacteurs". Thesis, Chasseneuil-du-Poitou, Ecole nationale supérieure de mécanique et d'aérotechnique, 2018. http://www.theses.fr/2018ESMA0006/document.
Testo completoThe conception of more efficient aircraft engines induces increased stress and temperature levels on the titanium alloys constitutive of the engine pylon. On the one hand, these materials have to be qualified in terms of damage tolerance. On the other hand, the long term high temperature exposure of these titanium alloys gives also rise to the question of thermal aging and metallurgical stability. Hence, the dimensioning as well as the maintenance of such aerostructures need to be considered in the light of both these critical issues.In the present work, the cyclic behavior as well as the fatigue crack resistance of different titanium alloys (TA6V, Ti 6242 et Ti 17), with various microstructures were studied after different aging conditions. Aging induces mainly an increase in crack growth rates at high values of the stress intensity factor, at room temperature. Subsequently, a thorough characterization procedure of this phenomenon was undertaken,including various types of loadings, at different scales and associated with fractographic analyses. The results allowed to suggest a damage scenario before and after aging, in the case of the alloy most affected by aging: theTi 17 alloy. This scenario shows the occurrence of a « static » mode of failure, which is linked to a damage process associated with intralamellar fracture and decohesion, without noticeable changes in the cyclic behavior. Finally, a time-temperature equivalency approach was developed to describe the kinetics of degradation of the mechanical properties induced by aging