Experimental evaluation and theoretical prediction of elastic properties and failure of C/C‐SiC composite
| Autor: | Shuguang Li, Elena Sitnikova, Daniel Cepli, Yuan Shi, Dietmar Koch |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2022 |
| Předmět: |
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C/C‐SiC Materials science C/C-SiC Coordinate system Stress–strain curve Pure shear mechanical properties Condensed Matter Physics Orthotropic material Ceramic matrix composite Compression (physics) failure Stress (mechanics) chemistry.chemical_compound chemistry Materials Chemistry Ceramics and Composites Silicon carbide ceramic matrix composites Keramische Verbundstrukturen Composite material modeling/model ddc:620 |
| ISSN: | 1546-542X 1744-7402 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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