Microwave Interferometric Measurements of Particle and Wave Velocities in Porous Media.
Abstract
A microwave interferometric technique was developed and integrated with several experimental arrangements for detonation physics studies. The interferometer records the Doppler shift of reflections associated with moving material discontinuities and ionization fronts. The analysis of those Doppler shifts provide quantitative velocities which are useful in the development and verification of physical and theoretical models used to depict the processes. Initial circuit criteria such as impedance matching, dielectric measurements, and waveguide modes are considered. The interferometer has been applied to detonation velocity measurements, detonation transfer tests, gap testing, and piston driven compaction experiments. In addition to the relatively simple analysis used to obtain these results, investigations into higher resolution data reduction aided by computer synthesis and Fourier transforms are also discussed.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 11, 1990
- Accession Number
- ADA235084
Entities
People
- Albert D. Krall
- Brian C. Glancy
Organizations
- Naval Surface Warfare Center