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Title: Damage mechanics modeling of the non-linear behavior of SiC/SiC ceramic matrix composite fuel cladding

Abstract

A damage model is developed and validated with experimental data for the non-linear mechanical behavior of SiC/SiC composite materials in nuclear applications. The model extends a continuum damage mechanics formalism, where explicit property degradation and volumetric swelling as a result of neutron irradiation are additionally included. The model is shown to be validated with out-of-pile experiments, and then applied to off-normal and high-burnup operating conditions associated with loss of cooling and extended radiation exposure, respectively. Optimized operating conditions aimed at reducing the fuel temperature included variation of the thermal conductivity and initial fuel-cladding gap thermal resistance. The nonlinear response along with continuum micro-cracking damage predictions are obtained and compared to the behavior during normal operating conditions. Numerical implementation of the model is based on 3-D Finite Element solutions.

Authors:
 [1];  [1]
  1. Univ. of California, Los Angeles, CA (United States)
Publication Date:
Research Org.:
Univ. of California, Los Angeles, CA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Fusion Energy Sciences (FES)
OSTI Identifier:
1803409
Alternate Identifier(s):
OSTI ID: 1544594
Grant/Contract Number:  
SC0018410
Resource Type:
Accepted Manuscript
Journal Name:
Journal of Nuclear Materials
Additional Journal Information:
Journal Volume: 524; Journal ID: ISSN 0022-3115
Publisher:
Elsevier
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; SiC/SiC composites; radiation damage; non-linear; fuel cladding; high-temperature

Citation Formats

Alabdullah, Mohammad, and Ghoniem, Nasr M. Damage mechanics modeling of the non-linear behavior of SiC/SiC ceramic matrix composite fuel cladding. United States: N. p., 2019. Web. doi:10.1016/j.jnucmat.2019.07.017.
Alabdullah, Mohammad, & Ghoniem, Nasr M. Damage mechanics modeling of the non-linear behavior of SiC/SiC ceramic matrix composite fuel cladding. United States. https://doi.org/10.1016/j.jnucmat.2019.07.017
Alabdullah, Mohammad, and Ghoniem, Nasr M. Fri . "Damage mechanics modeling of the non-linear behavior of SiC/SiC ceramic matrix composite fuel cladding". United States. https://doi.org/10.1016/j.jnucmat.2019.07.017. https://www.osti.gov/servlets/purl/1803409.
@article{osti_1803409,
title = {Damage mechanics modeling of the non-linear behavior of SiC/SiC ceramic matrix composite fuel cladding},
author = {Alabdullah, Mohammad and Ghoniem, Nasr M.},
abstractNote = {A damage model is developed and validated with experimental data for the non-linear mechanical behavior of SiC/SiC composite materials in nuclear applications. The model extends a continuum damage mechanics formalism, where explicit property degradation and volumetric swelling as a result of neutron irradiation are additionally included. The model is shown to be validated with out-of-pile experiments, and then applied to off-normal and high-burnup operating conditions associated with loss of cooling and extended radiation exposure, respectively. Optimized operating conditions aimed at reducing the fuel temperature included variation of the thermal conductivity and initial fuel-cladding gap thermal resistance. The nonlinear response along with continuum micro-cracking damage predictions are obtained and compared to the behavior during normal operating conditions. Numerical implementation of the model is based on 3-D Finite Element solutions.},
doi = {10.1016/j.jnucmat.2019.07.017},
journal = {Journal of Nuclear Materials},
number = ,
volume = 524,
place = {United States},
year = {Fri Jul 19 00:00:00 EDT 2019},
month = {Fri Jul 19 00:00:00 EDT 2019}
}

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Cited by: 6 works
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Works referenced in this record:

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