| タイトル | Architectural Effects on Impact Resistance of Uncoated MI SiC/SiC Composites |
| 本文（外部サイト） | http://hdl.handle.net/2060/20120016775 |
| 著者（英） | Cosgriff, L. M.; Bhatt, R. T.; Fox, D. S. |
| 著者所属（英） | NASA Glenn Research Center |
| 発行日 | 2009-05-31 |
| 言語 | eng |
| 内容記述 | Impact tests were conducted on uncoated 2D and 2.5D MI SiC/SiC composite specimens at room temperature and 1316 C in air. The specimens were analyzed before and after impact using optical microscopy, pulsed thermography (PT) and computed tomography (CT). Preliminary results indicate the following. Both 2-D and 2.5D composites show increase in surface and volumetric damages with increasing impact velocity. However, 2-D composites are prone to delamination cracks. In both 2D and 2.5D composites, the magnitude of impact damage at a fixed impact velocity is slightly greater at room temperature than at 1315 C. At a fixed projectile velocity and test temperature, the depth of penetration of the projectile into the substrate is significantly lower in 2.5D composites than in 2D composites. Fiber architecture plays a significant role controlling impact damage in MI SiC/SiC composites. |
| NASA分類 | Composite Materials |
| 権利 | No Copyright |
| URI | https://repository.exst.jaxa.jp/dspace/handle/a-is/240080 |
