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

1
Laboratoire des Composites ThermoStructuraux (LCTS), University of Bordeaux, UMR 5801: CNRS-Safran-CEA-UBx, 3, Allée de La Boétie, 33600 Pessac, France
2
CNRS, Laboratoire des Composites ThermoStructuraux (LCTS), 33600 Pessac, France
3
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; https://doi.org/10.3390/ceramics2020026
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)
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Abstract

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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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
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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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