Take ownership of the digital approach and the simulation tools already in place. Propose and implement a behavioral law making it possible to study the mechanical response of the materials studied, so as to parameterize the quantities of interest. Implement a probabilistic brittle fracture model to evaluate the effect of variation in tensile properties (yield strength and work hardening rate) on the probability of fracture of the geometries studied (CT12.5 and mini-CT). Determine, from modeling, the transition temperature shifts and compare them to those from experimental data.