Abstract
The scale effect on subcritical crack growth in rock is important to extrapolate the laboratory test results to the field scale design. A constant stress-rate test has been performed to estimate the mode I and II subcritical crack growth parameters for Coconino sandstone. The experimental results show that the subcritical crack growth parameters of mode I and mode II loading are similar to each other. The subcritical crack growth parameter A values increase with increasing specimen size, whereas the subcritical crack growth parameter n values are independent of specimen size. The subcritical crack growth parameter n was determined to be 35 to 36, and A was determined to be 1.17×10 -2 to 3.02×10-2 m/s.
| Original language | English (US) |
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| State | Published - 2008 |
| Event | 42nd U.S. Rock Mechanics - 2nd U.S.-Canada Rock Mechanics Symposium 2008 - San Francisco, CA, United States Duration: Jun 29 2008 → Jul 2 2008 |
Other
| Other | 42nd U.S. Rock Mechanics - 2nd U.S.-Canada Rock Mechanics Symposium 2008 |
|---|---|
| Country/Territory | United States |
| City | San Francisco, CA |
| Period | 6/29/08 → 7/2/08 |
ASJC Scopus subject areas
- Geochemistry and Petrology
- Geophysics