Development of Optical Stress Gauges for Use in Shock Wave Experiments
Abstract
Experiments and analyses were carried out to demonstrate the successful development and use of the ruby stress gauges under shock wave loading. The predictive capability of our theoretical model, developed earlier, was established by the good agreement obtained between the calculated and measured R-line shifts for shock wave compression of r-cut samples. The feasibility of using stimulated emission to enhance the signal intensity from shocked ruby crystals was demonstrated. The major element of the present work involved the successful development and use of in-situ, miniature ruby sensors in high stress and high strain rate environments. The miniature ruby sensors developed have provided good quality signals in a wide variety of materials (metals, polymers, eramics and geologic solids) shocked to stresses ranging from 0.3 to 8.0 GPa. Additionally, the ability of the miniature ruby sensors to provide quantitative, time-resolved data under 2-D, dynamic loading is expected to be valuable in obtaining stress measurements in a wide variety of applications involving rapid impulsive loading. The use of R2-line shifts to obtain the mean stress will be useful for material property studies under dynamic loading.
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 01, 2000
- Accession Number
- ADA389096
Entities
People
- Yogendra Gupta
Organizations
- Washington State University