Abstract
The microstructure of a 3D C/SiC composite was characterized and the tensile behaviour was investigated in conjunction with acoustic emission (AE) technique. A computer model of the fibre architecture was generated for visualization and further stress analysis. The results show that the stress-strain curves exhibit mostly nonlinear behaviour with four distinguishable regions, which compare well with the AE characteristics. Microstructural observations reveal the superficial matrix cavities and large inter-bundle pores due to the 3D braiding fibre architecture. The failed specimens show ragged fracture surfaces and extensive fibre pullout, as well as interfacial debonding.
Original language | English |
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Pages (from-to) | 125-130 |
Number of pages | 6 |
Journal | Advanced Composites Letters |
Volume | 17 |
Issue number | 4 |
DOIs | |
State | Published - 2008 |
Keywords
- Ceramic matrix composites
- Fibre architecture
- Microstructure
- Tensile behaviour