Measurement of Elastic Properties and Static Strength
Abstract
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 mimicing 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.
Document Details
- Document Type
- Technical Report
- Publication Date
- Oct 01, 1984
- Accession Number
- ADA166155
Entities
People
- Tracy L. Johnson
Organizations
- Lamont–Doherty Earth Observatory