Loading...
Please wait, while we are loading the content...
Similar Documents
Architectural effects on impact resistance of uncoated mi sic/sic composites
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Fox, D. S. Cosgriff, L. M. Bhatt, R. T. |
| Copyright Year | 2009 |
| Description | 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. |
| File Size | 3697716 |
| Page Count | 20 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_20120016775 |
| Archival Resource Key | ark:/13960/t3dz57c16 |
| Language | English |
| Publisher Date | 2009-05-31 |
| Access Restriction | Open |
| Subject Keyword | Composite Materials Microscopy Tomography Imaging Techniques Impact Velocity Impact Resistance Silicon Carbides Impact Tests Impact Damage Thermography Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |
