Abstract
We have determined all five independent elastic-stiffness coefficients Cij of a silicon carbide fibre with transverse isotropy from room temperature up to 873 K. Firstly, we measured the Cij of a titanium-alloy-matrix composite reinforced unidirectionally with the fibres and the matrix alloy alone. Electromagnetic acoustic resonance detected the free-vibration resonance frequencies of the specimens to determine their C ij. Secondly, we applied a micromechanics calculation to deduce the fibre Cij from the measured composite and matrix Cij. The resulting fibre Cij shows strong anisotropy in the temperature derivatives of the Cij; the temperature derivatives for the fibre-axis-direction Cij are much smaller than the others.
| Original language | English |
|---|---|
| Pages (from-to) | 503-512 |
| Number of pages | 10 |
| Journal | Philosophical Magazine |
| Volume | 83 |
| Issue number | 4 |
| DOIs | |
| Publication status | Published - 2003 Feb 1 |
| Externally published | Yes |
ASJC Scopus subject areas
- Condensed Matter Physics
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Ogi, H., Kai, S., Ichitsubo, T., Hirao, M., & Takashima, K. (2003). Elastic-stiffness coefficients of a silicon carbide fibre at elevated temperatures: Acoustic spectroscopy and micromechanics modelling. Philosophical Magazine, 83(4), 503-512. https://doi.org/10.1080/0141861021000034559