Investigation of Rod Size Effects and Buffer Geometry on Penetration and Interface Defeat of Gold Rods into Silicon Carbide
Abstract
Reverse ballistic experiments were used to investigate rod size effects and buffer geometry on penetration and interface defeat of long, gold rods into silicon carbide (Si-N). Rod diameters were 1.0mm and 0.75 mm, and lengths were 70mm and 50mm, respectively. Within data scatter, penetration velocity was the same for bare or sleeved, pre-damaged, (thermally shocked with noncontiguous cracks), and in-situ comminuted SiC-N. Penetration velocity was independent of rod diameter within data scatter. It was found that the penetration resistance of SiC-N is very high during the first few microseconds after impact, after which, the penetration velocity achieves the steady-state value observed in the other experiments. Investigation of the effects of a copper buffer on the surface of the ceramic showed that the dwell-penetration transition velocity depends upon the non-dimensional ration of buffer thickness to projectile diameter (h/Dp), with h/Dp = 2 being more effective than 4. Additionally, the data show that the transition velocity for the smaller diameter rod increased by 65 m/s at the same h/Dp ratio.
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 15, 2010
- Accession Number
- AD1216197
Entities
People
- Charles E. Jr Anderson
- Dennis L. Orphal
- Nikki L. King
- Thilo Behner
- Timothy J Holmquist
Organizations
- Southwest Research Institute