Guoqing Chen, Leijiang Yao, Lijun Zhang, Bin Li, Xiaoyan Tong
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引用次数: 0
Abstract
Stress oxidation, accompanied by a complex coupling process between thermal, stress, and chemical reactions, is one of the primary failure types of C/SiC thermal structures. To predict the rupture life of C/SiC, a finite element analysis (FEA) model was established on a representative volume element (RVE) extracted from the periodic structure of plain weave C/SiC. Considering the diffusion mechanism of the oxidizing atmosphere and the oxidation kinetics of carbon fibers, an oxidation damage variable was defined. The FEA model accounts for both stress failure and oxidation damage of the carbon fiber bundles. Stress rupture lifetimes under the conditions of different stress levels and temperatures were predicted. The comparison between simulation results and experimental results proves the reliability of the proposed model. The competition mechanism between diffusion and oxidation was also discussed.
期刊介绍：
The Journal of the American Ceramic Society contains records of original research that provide insight into or describe the science of ceramic and glass materials and composites based on ceramics and glasses. These papers include reports on discovery, characterization, and analysis of new inorganic, non-metallic materials; synthesis methods; phase relationships; processing approaches; microstructure-property relationships; and functionalities. Of great interest are works that support understanding founded on fundamental principles using experimental, theoretical, or computational methods or combinations of those approaches. All the published papers must be of enduring value and relevant to the science of ceramics and glasses or composites based on those materials.
Papers on fundamental ceramic and glass science are welcome including those in the following areas:
Enabling materials for grand challenges[...]
Materials design, selection, synthesis and processing methods[...]
Characterization of compositions, structures, defects, and properties along with new methods [...]
Mechanisms, Theory, Modeling, and Simulation[...]
JACerS accepts submissions of full-length Articles reporting original research, in-depth Feature Articles, Reviews of the state-of-the-art with compelling analysis, and Rapid Communications which are short papers with sufficient novelty or impact to justify swift publication.
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