Finite element analysis of the damage and healing behavior of self-healing ceramic materials. (1st December 2016)

• Record Type: Journal Article
• Authors: Ozaki, Shingo; Osada, Toshio; Nakao, Wataru
• Is Part Of: International journal of solids and structures. Volume 100/101(2016)
• Page Start: 307
• Page End: 318
• Publication Date: 2016-12-01
• Subjects: Self-healing -- Constitutive model -- FEM -- Oxidation kinetics -- Continuum damage mechanics; Mechanics, Applied -- Periodicals; Structural analysis (Engineering) -- Periodicals; Elastic solids -- Periodicals; Mécanique appliquée -- Périodiques; Constructions, Théorie des -- Périodiques; Solides élastiques -- Périodiques; Elastic solids; Mechanics, Applied; Structural analysis (Engineering); Periodicals; 624.18
• DOI: 10.1016/j.ijsolstr.2016.08.026
• Languages: English
• ISSNs: 0020-7683

Abstract

Abstract: Self-healing of crack-damaged brittle ceramics is a valuable phenomenon that counteracts the reliability decrease caused by undesired cracking during service. In this study, we developed a constitutive model to analyze the behavior of self-healing ceramic materials within the framework of a finite element method (FEM), which can describe not only an isotropic damage process under specific boundary conditions, but also self-healing at high temperatures and O2 partial pressures. The damage process was formulated based on the fracture mechanics, while self-healing was described using oxidation kinetics modeling of self-healing time. In addition, the proposed constitutive model was applied to a FE analysis of alumina/15 vol.% SiC nanocomposite materials.