Abstract
The damping capacity of 2D C/SiC composites prepared by CVI process was measured, and the damping mechanism of the composites was discussed. Furthermore, the effects of the coating, test frequency and thermal treatment on the damping peak of the composites were analyzed. The results show that the damping peak value of 2D C/SiC composites is about 1.86 × 10-2, and the damping mechanism mainly includes microcrack expansion, reinforcement fiber damping and the interface damping. SiC coating can significantly reduce the damping capacity of 2D C/SiC composites, and eliminate the damping peak on the damping characteristic curve. The damping peak value of 2D C/SiC composites decreases with the increase of the vibration frequency. The high-temperature thermal treatment can make the damping peak value of 2D C/SiC composites decrease.
| Original language | English |
|---|---|
| Pages (from-to) | 455-459 |
| Number of pages | 5 |
| Journal | Guti Huojian Jishu/Journal of Solid Rocket Technology |
| Volume | 29 |
| Issue number | 6 |
| State | Published - Dec 2006 |
Keywords
- 2D C/SiC composites
- CVI process
- Damping capacity