Abstract
Loading machine stiffness is considered in an attempt to simulate strain accumulation processes prior to failure in earthquakes. We impose the similarity condition that the inelastic deformation in a test specimen relative to the loading machine corresponds with that in a spherical seismic region relative to the surrounding earth. From this constraint the appropriate ratio between the stiffnesses of machine and specimen is determined to be 1.5 ∼ 2.3. Preliminary experiments were carried out for sandstone samples. A qualitative difference between acoustic emission sequences was observed depending on whether the conditions were similar or dissimilar to the earth based on the scaling assumption. In the former case, a subsidence in acoustic emission activity prior to the main fractures was clearly and systematically observed.
Original language | English (US) |
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Pages (from-to) | 321-323 |
Number of pages | 3 |
Journal | Geophysical Research Letters |
Volume | 8 |
Issue number | 4 |
DOIs | |
State | Published - Apr 1981 |
Externally published | Yes |
All Science Journal Classification (ASJC) codes
- Geophysics
- Earth and Planetary Sciences(all)