Spatial daily rainfall descriptors to reproduce sub-daily dynamics in the analog method for temporal disaggregation

International audienc

Micromechanical modelling of monotonic loading of CP α-Ti: Correlation between macroscopic and microscopic behaviour

International audienc

Hardening in relation with microstructure evolution of high purity α-titanium deformed under monotonic and cyclic simple shear loadings at room temperature

International audienceThe aim of this paper is to gain understanding of the quasi-static, large strain deformation behavior at room-temperature of high-purity α-Ti with an initial split-basal texture. Simple shear tests were conducted along different directions in order to quantify the material's anisotropy and hardening evolution for different strain paths such as monotonic, Bauschinger, and cyclic loadings. The stress–strain curves indicate that the material displays strong anisotropy in the flow behavior. In order to capture the link between microstructure evolution (occurrence of twinning, grain size evolution, etc.) and the macroscopic response, a thoroughly detailed multi-scale characterization using scanning electron microscope (SEM) observations and electron backscattered diffraction (EBSD) analysis was also conducted. Specifically, EBSD analyses indicate that the twin activity and grain fragmentation are responsible for the observed difference between the macroscopic hardening rates corresponding to different directions and loading paths

Projet OPTIMIST : Modélisation et OPTImisation de la MISe en Forme des Alliages de Titane

National audienc