TY - JOUR
T1 - Modeling the two-way coupling of stress, diffusion, and oxidation in heterogeneous CMC microstructures
AU - Schichtel, Jacob J.
AU - Chattopadhyay, Aditi
N1 - Funding Information:
The research is supported by the National Energy Technology Laboratory (NETL) under grant number DE‐FOA‐0001993, with program manager Matthew Adams, and the National Defense Science and Engineering Graduate (NDSEG) Fellowship Program. The authors would also like to acknowledge Dr. Luke Borkowski from United Technologies Research Center (UTRC), Professor Jay Oswald from Arizona State University, and Dr. Roy Sullivan from NASA Glenn Research center for their valuable discussions.
Funding Information:
The research is supported by the National Energy Technology Laboratory (NETL) under grant number DE‐FOA‐0001993 , with program manager Matthew Adams, and the National Defense Science and Engineering Graduate ( NDSEG ) Fellowship Program. The authors would also like to acknowledge Dr. Luke Borkowski from United Technologies Research Center ( UTRC ), Professor Jay Oswald from Arizona State University, and Dr. Roy Sullivan from NASA Glenn Research center for their valuable discussions.
Publisher Copyright:
© 2022 The Authors
PY - 2023/2
Y1 - 2023/2
N2 - A multiphysics methodology and a corresponding numerical scheme are proposed for modeling the complex interactions between oxygen diffusion, matrix cracking, oxidation, and the state of stress in carbon silicon carbide (C/SiC) ceramic matrix composites (CMCs) at the microstructural scale. The model is derived from the governing equations for force equilibrium and conservation of mass for oxygen and carbon, which are coupled through reaction terms, oxygen diffusivities and solubilities, and damage in the matrix. The Galerkin method of weighted residuals is used to derive the finite element method (FEM) equations, and the model is demonstrated on a representative stochastic heterogeneous microstructure to investigate the creep-like strain acceleration of stressed oxidation experiments and analyze the fundamental differences between the reaction-limited and diffusion-limited temperature regimes.
AB - A multiphysics methodology and a corresponding numerical scheme are proposed for modeling the complex interactions between oxygen diffusion, matrix cracking, oxidation, and the state of stress in carbon silicon carbide (C/SiC) ceramic matrix composites (CMCs) at the microstructural scale. The model is derived from the governing equations for force equilibrium and conservation of mass for oxygen and carbon, which are coupled through reaction terms, oxygen diffusivities and solubilities, and damage in the matrix. The Galerkin method of weighted residuals is used to derive the finite element method (FEM) equations, and the model is demonstrated on a representative stochastic heterogeneous microstructure to investigate the creep-like strain acceleration of stressed oxidation experiments and analyze the fundamental differences between the reaction-limited and diffusion-limited temperature regimes.
KW - Ceramic Matrix Composites (CMCs)
KW - Damage
KW - Diffusion
KW - Finite Element Method (FEM)
KW - Oxidation
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U2 - 10.1016/j.jeurceramsoc.2022.09.046
DO - 10.1016/j.jeurceramsoc.2022.09.046
M3 - Article
AN - SCOPUS:85139735744
SN - 0955-2219
VL - 43
SP - 261
EP - 272
JO - Journal of the European Ceramic Society
JF - Journal of the European Ceramic Society
IS - 2
ER -