Long-Rod Impact on Intact and Pre-Damaged Sleeved SiC Ceramics
Abstract
Penetration experiments with long rods into SiC ceramics are available for two rod materials over a wide range of impact velocities [1-2]. The ceramics used in these experiments were initially intact, without cracks or other induced damage. The penetration response of three types of pre-damaged SiC was also investigated [3-4]. The pre-damaged targets, which were confined in 7075 aluminum sleeves consisted of 1) thermally shocked (many non-contiguous cracks), 2) thermally shocked with mechanical load/unload/cycling (TS/CL or in-situ comminuted), and 3) compacted powder. This report describes additional experiments conducted on intact and thermally shocked (pre-damaged) SiC-N that overlapped the previous test data and extend the data to lower impact velocities. It is found that the penetration velocity-within data scatter-is independent of whether the ceramic is initially intact or pre-damaged, which is a different result than expected.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jul 23, 2010
- Accession Number
- AD1216696
Entities
People
- Arthur E. Nicholls
- Charles E. Jr Anderson
- Dennis L. Orphal
- Thilo Behner
- Timothy J Holmquist
Organizations
- Southwest Research Institute