Size effect on subcritical crack growth in Coconino sandstone

T. Y. Koo, J. Kemeny

Research output: Contribution to conferencePaper

2 Scopus citations

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 languageEnglish (US)
StatePublished - Dec 1 2008
Event42nd U.S. Rock Mechanics - 2nd U.S.-Canada Rock Mechanics Symposium 2008 - San Francisco, CA, United States
Duration: Jun 29 2008Jul 2 2008

Other

Other42nd U.S. Rock Mechanics - 2nd U.S.-Canada Rock Mechanics Symposium 2008
CountryUnited States
CitySan Francisco, CA
Period6/29/087/2/08

ASJC Scopus subject areas

  • Geochemistry and Petrology
  • Geophysics

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    Koo, T. Y., & Kemeny, J. (2008). Size effect on subcritical crack growth in Coconino sandstone. Paper presented at 42nd U.S. Rock Mechanics - 2nd U.S.-Canada Rock Mechanics Symposium 2008, San Francisco, CA, United States.