VITECOCO

Multiple studies have increased our understanding of the phenomenon of compression fracture in composite materials, for both quasi-static and dynamic velocity regimes. Given the complexity of performing a reproducible static and dynamic compression fracture test, there are few studies available to assess the velocity dependence of the high-temperature phenomenon. In this context, this thesis will develop an experimental methodology for analyzing the effect of speed on the fracture phenomenon in an environment varying from ambient to 150°C. Experimentally, a dynamic test protocol will be developed to measure macroscopic quantities at different speeds and temperatures, and to observe degradation mechanisms at different scales. The experimental data collected at different scales will enrich ONERA's modeling strategy for composite materials, initially developed to predict behavior under quasi-static loads. The aim of this thesis is to extend the models to dynamic loads, and to implement them in one of ONERA's computational codes.