Numerical simulation of oxidation-assisted failure of CMC-SiC at intermediate temperature

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Abstract

A numerical model is presented to predict the oxidation-assisted failure behaviors of continuous fiber-reinforced silicon carbide ceramic matrix composite (CMC-SiC) at intermediate temperature. This model is based upon the analysis of the representative volume cell (RVC) of CMC-SiC. The geometric morphology of oxidized microstructure influenced by time and environment parameters is modeled in the RVC. The detailed stress distributions within the oxidized RVC microstructure are computed by finite element method, which are then used to predict the failure behaviors of composite. Micro (one single filament) CMC-SiC is concerned in the present study. Analysis results of such a composite can provide a guideline for the oxidation-assisted failure behaviors of real CMC-SiC. The failure behaviors of micro CMC-SiC in air oxidizing environment are evaluated and validated in comparison to experimental data.

Original languageEnglish
Title of host publicationHigh Temperature Ceramic Matrix Composites 8 - A Collection of Papers Presented at the HTCMC 2013 Conference
PublisherAmerican Ceramic Society
Pages65-76
Number of pages12
ISBN (Print)9781118932988
DOIs
StatePublished - 2014
Event8th High Temperature Ceramic Matrix Composites Conference, HTCMC 2013 - Xi'an, Shaanxi, China
Duration: 22 Sep 201326 Sep 2013

Publication series

NameCeramic Transactions
Volume248
ISSN (Print)1042-1122

Conference

Conference8th High Temperature Ceramic Matrix Composites Conference, HTCMC 2013
Country/TerritoryChina
CityXi'an, Shaanxi
Period22/09/1326/09/13

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