Kinetics of Shock-Induced Phase Transitions.
Abstract
A method is developed for performing and interpreting shock wave experiments in two-dimensional strain using a light gas gun. The experimental configuration consists of the impact of a projectile on a wedge whose impact face makes an angle alpha with the projectile impact face. The instrumentation consists of resistance wires stretched parallel to and offset from the wedge rear surface in order to detect free surface motion. The system has the capability of making measurements over a continuous range of shock propagation distances in a single experiment. The repeatability of the technique is good to within three to four percent. The analytical technique consists of a Lagrangian finite-difference code written specifically to handle wedge impact problems. It includes material strength, stress relaxation, and phase transitions. Experiments were done on aluminum wedges and on iron and KC1 wedges shocked past their transition points. Comparisons with computer calculations of the problems show excellent agreement.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 01, 1976
- Accession Number
- ADA031643
Entities
People
- G. E. Duvall
- J. J. Dick
- J. W. Swegle
Organizations
- Washington State University