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Experimental evaluation and theoretical prediction of elastic properties and failure of C/C‐SiC composite

Shi, Yuan; Li, Shuguang; Sitnikova, Elena; Cepli, Daniel; Koch, Dietmar

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Authors

Yuan Shi

SHUGUANG LI shuguang.li@nottingham.ac.uk
Professor of Aerospace Composites

Daniel Cepli

Dietmar Koch



Abstract

The paper presents experimental characterization and theoretical predictions of elastic and failure properties of continuous carbon fiber reinforced silicon carbide (C/C-SiC) composite fabricated by Liquid Silicon Infiltration (LSI). Its mechanical properties were determined under uniaxial tensile, compression and pure shear loads in two sets of principal coordinate systems, 0°-90° and ±45°, respectively. The properties measured in the 0°-90° coordinate system were employed as the input data to predict their counterparts in the ±45° coordinate system. Through coordinate transformations of stress and strain tensors, the elastic constants and stress-strain behaviors were predicted and found to be in good agreement with the experimental results. In the same way, three different failure criteria, maximum stress, Tsai-Wu and maximum strain, have been selected for the evaluation of the failure of C/C-SiC as a type of genuinely orthotropic material. Based on the comparisons with experimental results, supported by necessary practical justifications, the Tsai-Wu criterion was found to offer a reasonable prediction of the strengths, which can be assisted by the maximum stress criterion to obtain an indicative prediction of the respective failure modes.

Citation

Shi, Y., Li, S., Sitnikova, E., Cepli, D., & Koch, D. (2022). Experimental evaluation and theoretical prediction of elastic properties and failure of C/C‐SiC composite. International Journal of Applied Ceramic Technology, 19(1), 7-21. https://doi.org/10.1111/ijac.13775

Journal Article Type Article
Acceptance Date Apr 3, 2021
Online Publication Date May 18, 2021
Publication Date 2022-01
Deposit Date Apr 27, 2022
Publicly Available Date Apr 27, 2022
Journal International Journal of Applied Ceramic Technology
Print ISSN 1546-542X
Electronic ISSN 1744-7402
Publisher Wiley
Peer Reviewed Peer Reviewed
Volume 19
Issue 1
Pages 7-21
DOI https://doi.org/10.1111/ijac.13775
Keywords Materials Chemistry; Marketing; Condensed Matter Physics; Ceramics and Composites
Public URL https://nottingham-repository.worktribe.com/output/5434197
Publisher URL https://ceramics.onlinelibrary.wiley.com/doi/10.1111/ijac.13775

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