Call number:
ZSP-202-257
In:
Research report
Description / Table of Contents:
CONTENTS: PREFACE. - NOMENCLATURE. - SUMMARY. - INTRODUCTION. - TECHNICAL BACKGROUND. - Rankine-Hugoniot Shock Equations. - The Rayleigh Line. - Release Cross Curves. - Impedance Match Technique for Measuring Hugoniots and Release Isentropes. - EXPERIMENTS. - Sample Materials. - Ottawa Sand. - West Lebanon Glacial Till. - Ice . - Sample Preparation. - Experimental Procedures. - EXPERIMENTAL DATA AND RESULTS. - Ottawa Sand. - West Lebanon Glacial Till. - Ice. - Release Cross Curves. - Dry Ottawa Sand. - Saturated Ottawa Sand. - Ice. - SUMMARY AND RECOMMENDATIONS FOR FUTURE WORK. - REFERENCES.
Description / Table of Contents:
To compute shock wave propagation in frozen soil-water mixtures it is necessary to know a constitutive relation or an equation of state of the medium under consideration. Shock wave techniques provide a powerful tool for the investigation of equations of state at very high stress levels. The stress-volume behavior of frozen soil-water mixtures in the range from 60 to 500 kbar was investigated. Hugoniot data were obtained for Ottawa banding sand (pure quartz sand) and West Lebanon (New Hampshire) glacial till of varying degrees of saturation and for polycrystalline and monocrystalline ice (c-axis oriented in the direction of shock propagation). Release cross curve data were obtained for dry and saturated Ottawa banding sand and for polycrystalline ice. All materials were at an initial temperature of -10°C. In all experiments plane one-dimensional shock waves were used. The Hugoniots and release curves for the soil materials show evidence of a quartz-stishovite phase transition at about 300 kbar. The Hugoniots of single and polycrystalline ice do not differ significantly over the stress range studied - 30 kbar to 300 kbar.
Type of Medium:
Series available for loan
Pages:
vii, 50 Seiten
,
Illustrationen
Series Statement:
Research report / Cold Regions Research and Engineering Laboratory, CRREL, US Army Material Command 257
URL:
http://www.worldcat.org/oclc/227500834
Location:
AWI Archive
Branch Library:
AWI Library
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