Abstract
The morphology of a C/PyC/SiC ceramic composite is studied and its microdamage mechanisms are revealed. Some models based on the micromechanical fracture mechanics are proposed to describe the possible damage processes. The influence of the observed microdamage on the stiffness reduction is studied. It is shown that the delamination between the layers and the cracks in the coating alone cannot explain the stiffness reduction observed in tests. Debonding between the SiC coating and pyrocarbon is suggested as another mechanism of the stiffness reduction.
| Original language | English |
|---|---|
| Pages (from-to) | 289-298 |
| Number of pages | 10 |
| Journal | Mechanics of Composite Materials |
| Volume | 37 |
| Issue number | 4 |
| DOIs | |
| Publication status | Published - Jul 2001 |
| Externally published | Yes |
Keywords
- Ceramic composite
- Damage
- Microdamage
- Micromechanics
- SiC
- Tensile test
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