Image-Based Numerical Modeling of Self-Healing in a Ceramic-Matrix Minicomposite
Langue
EN
Article de revue
Ce document a été publié dans
Ceramics. 2019, vol. 2
Résumé en anglais
Self-healing, obtained by the oxidation of a glass-forming phase, is a crucial phenomenon to ensure the lifetime of new-generation refractory ceramic-matrix composites. The dynamics of oxygen diffusion, glass formation and ...Lire la suite >
Self-healing, obtained by the oxidation of a glass-forming phase, is a crucial phenomenon to ensure the lifetime of new-generation refractory ceramic-matrix composites. The dynamics of oxygen diffusion, glass formation and flow are the basic ingredients of a self-healing model that has been developed here in 2D in a transverse crack of a mini-composite. The presented model can work on a realistic image of the material section and is able to simulate the healing process and to quantify the exposure of the material to oxygen: a prerequisite for its lifetime prediction. Crack reopening events are handled satisfactorily, and healing under cyclic loading can be simulated. This paper describes and discusses a typical case in order to show the model capabilities< Réduire
Mots clés en anglais
self-healing
ceramic-matrix composites
image-based modelling
Project ANR
Composites Auto-Cicatrisants Virtuels pour la Propulsion Aéronautique - ANR-17-CE08-0030
Unités de recherche