BELLEZZA, Giulia; COUÉGNAT, Guillaume; RICCHIUTO, Mario; VIGNOLES, Gérard L.

doi:10.1016/j.jeurceramsoc.2022.07.037

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Licence d’utilisation du document

BELLEZZA, Giulia
Certified Adaptive discRete moDels for robust simulAtions of CoMplex flOws with Moving fronts [CARDAMOM]

COUÉGNAT, Guillaume
Laboratoire des Composites Thermostructuraux [LCTS]

RICCHIUTO, Mario
Certified Adaptive discRete moDels for robust simulAtions of CoMplex flOws with Moving fronts [CARDAMOM]

Langue

Article de revue

Ce document a été publié dans

Journal of the European Ceramic Society. 2022-07

Elsevier

Résumé en anglais

We propose a multi-physics numerical model for a self-healing ceramic matrix mini-composite under tensile load. Crack averaged PDEs are proposed for the transport of oxygen and of all the chemical species involved in the healing process and studied in the dimensionless form to perform the most appropriate discretization choices concerning time integration, and boundary conditions. Concerning the fibres’ degradation, a slow crack growth model explicitly dependent on the environmental parameters is calibrated using a particular exact solution and integrated numerically in the general case. The tow failure results from the statistical distribution of the fibres’ initial strength, the slow crack growth kinetics, and the load transfer following fibres breakage. The lifetime prediction capabilities of the model, as well as the effect of temperature, spatial variation of the statistical distribution of fibres strength, and applied load, are investigated highlighting the influence of the diffusion/reaction processes (healing) on the fibre breakage scenarios.< Réduire

Mots clés en anglais

ceramic-matrix composites

self-healing

slow crack growth

image-based modelling

URI

https://oskar-bordeaux.fr/handle/20.500.12278/191091

DOI

http://dx.doi.org/10.1016/j.jeurceramsoc.2022.07.037

Project ANR

Composites Auto-Cicatrisants Virtuels pour la Propulsion Aéronautique - ANR-17-CE08-0030

Origine

Importé de hal

Unités de recherche

Institut de Mathématiques de Bordeaux (IMB) - UMR 5251