Measurement of elastic properties and static strength. Final report, 1 July 1983-1 October 1984

Technical Report · Mon Oct 01 04:00:00 EDT 1984

OSTI ID:5745787

Johnson, T L

Prediction of seismic coupling for nuclear monitoring requires theoretical models capable of calculating ground motions. The models must have a sound physical basis and be able to represent dynamic material behavior near the source. This portion of the study of stress-wave propagation in low-porosity rock is aimed at determining quasi-static properties of rock necessary to use in numerical models predicting wave propagation. Further, the failure process of low-porosity rock under simulated shock loading is being studied to establish the failure mechanisms. Initial effort supported by the contract was devoted mainly to obtaining and preparing samples of Westerly granite for experiments. Preliminary experiments to characterize the properties of Westerly granite were performed on small samples obtained from the Bonner Monument Co. Material properties measured agreed well with previous determinations. Deformation of Westerly Granite was measured under standard triaxial loading conditions and under a loading path mimiking shock-wave passage. Unlike high-porosity rocks, the different loading paths did not substantially affect the strength of the low-porosity granite. The failure envelope determined in standard triaxial tests agreed well with that measured under simulated shock loading.

• Research Organization: Columbia Univ., Palisades, NY (USA). Lamont-Doherty Geological Observatory
• OSTI ID: 5745787
• Report Number(s): AD-A-166155/2/XAB
• Country of Publication: United States
• Language: English

Related Subjects

45 MILITARY TECHNOLOGY, WEAPONRY, AND NATIONAL DEFENSE
450300* -- Military Technology
Weaponry
& National Defense-- Nuclear Explosion Detection
58 GEOSCIENCES
580201 -- Geophysics-- Seismology & Tectonics-- (1980-1989)
DEFORMATION
DETECTION
DYNAMICS
EXPLOSIONS
GROUND MOTION
MATERIALS
MATHEMATICAL MODELS
MECHANICS
MONITORING
MOTION
NUCLEAR EXPLOSION DETECTION
NUCLEAR EXPLOSIONS
POROSITY
ROCK MECHANICS
SAMPLING
SEISMIC DETECTION
SEISMIC WAVES
SHOCK WAVES
SIMULATION
WAVE PROPAGATION