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Open AccessArticle

Image-Based Numerical Modeling of Self-Healing in a Ceramic-Matrix Minicomposite

Laboratoire des Composites ThermoStructuraux (LCTS), University of Bordeaux, UMR 5801: CNRS-Safran-CEA-UBx, 3, Allée de La Boétie, 33600 Pessac, France
CNRS, Laboratoire des Composites ThermoStructuraux (LCTS), 33600 Pessac, France
Team CARDAMOM, Inria Bordeaux Sud-Ouest, 200 Avenue de la Vieille Tour, 33405 Talence CEDEX, France
Author to whom correspondence should be addressed.
These authors contributed equally to this work.
Ceramics 2019, 2(2), 308-326;
Received: 27 February 2019 / Revised: 19 April 2019 / Accepted: 29 April 2019 / Published: 2 May 2019
(This article belongs to the Special Issue Damage and Lifetime of Ceramic Matrix Composites)
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. View Full-Text
Keywords: self-healing; ceramic-matrix composites; image-based modelling self-healing; ceramic-matrix composites; image-based modelling
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Perrot, G.; Couégnat, G.; Ricchiuto, M.; Vignoles, G.L. Image-Based Numerical Modeling of Self-Healing in a Ceramic-Matrix Minicomposite. Ceramics 2019, 2, 308-326.

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