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Keywords: surface energy
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Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-1910
... toughness granite mineral constituent notch interface upstream oil & gas transition size specimen experimental result fracture surface energy fracture propagation variational approach scaling-law relationship ARMA 21 1910 Impact of grain and interface fracture surface energies...
Proceedings Papers

Paper presented at the 51st U.S. Rock Mechanics/Geomechanics Symposium, June 25–28, 2017
Paper Number: ARMA-2017-0585
... specimen dynamic multi-fracturing process initiation pressure thermal stress Symposium expansion propagation fracture propagation fracture surface energy 1. INTRODUCTION It is widely accepted that the traditional hydraulic fracturing has some disadvantages, such as excessive water consumption...
Proceedings Papers

Paper presented at the 49th U.S. Rock Mechanics/Geomechanics Symposium, June 28–July 1, 2015
Paper Number: ARMA-2015-308
... speed camera snapshots. The crushed samples were recycled after the test. Further by counting the newly generated surface from sample fragments, the surface energy was determined for each sample. The indirect tensile strength is consistent with that of reported Brazilian disc test. The determined...
Proceedings Papers

Paper presented at the DC Rocks 2001, The 38th U.S. Symposium on Rock Mechanics (USRMS), July 7–10, 2001
Paper Number: ARMA-01-0027
... in surface energy; ß Stress corrosion; ß Capillary pressure reduction; and ß Chemical effect. Off saturated: Water saturated: c'=13.3MP C'=7.6MPa , 0 25 50 75 100 126 150 175 Mean Effective Stresa (MPa) Figure 9. Peak strength data of oil and water saturated Som- ersby sandstone. 32 Not all the mechanisms...
Proceedings Papers

Paper presented at the The 31st U.S. Symposium on Rock Mechanics (USRMS), June 18–20, 1990
Paper Number: ARMA-90-0897
... distribution size reduction powder factor surface energy Rock Mechanics Contributions and Challenges, Hus rulid &Johnson (eds) ¸ 1990Balkema, Rotterdam. ISBN906191 1230 Optimization of rock fragmentation i bench blasting N. MojtabaJ New Mexico Institute of Mining & Technology, Socorro, N3/lex. I.W...
Proceedings Papers

Paper presented at the The 24th U.S. Symposium on Rock Mechanics (USRMS), June 20–23, 1983
Paper Number: ARMA-83-0239
... reservoir geomechanics strength Case History Wellbore Design machine performance fracture toughness Rock Mech penetration rate penetration University Reservoir Characterization Upstream Oil & Gas correlation Newcastle upon Tyne tunnel surface energy equation 24Ch U.S. Symposium...
Proceedings Papers

Paper presented at the The 24th U.S. Symposium on Rock Mechanics (USRMS), June 20–23, 1983
Paper Number: ARMA-83-0469
... ABSTRACT ABSTRACT Measurement of grain boundary grooves produced by thermal etching in calcite bicrystals yields values for the grain boundary energy - surface energy ratio of O. 25 to O. 06 for high angle twist boundaries. Smaller ratios are observed for low angle twist boundaries...
Proceedings Papers

Paper presented at the The 22nd U.S. Symposium on Rock Mechanics (USRMS), June 29–July 2, 1981
Paper Number: ARMA-81-0021
... fracture mechanics criterion extension Artificial Intelligence compression surface energy crack propagation rock fracture orientation propagate crack tip free surface energy propagation fracture ROCK FRACTURE AND FRAGMENTATION Charles Fairhurst and Francois H. Cornet Professor and Head...
Proceedings Papers

Paper presented at the The 14th U.S. Symposium on Rock Mechanics (USRMS), June 11–14, 1972
Paper Number: ARMA-72-0121
... Characterization activation energy thermoluminescence intensity ultimate strength Upstream Oil & Gas Rock mechanics pressure temperature range unconfined compression test strain energy build-up initiation Fatigue Cycling thermoluminescence reading dislocation specimen surface energy STRAIN...
Proceedings Papers

Paper presented at the The 12th U.S. Symposium on Rock Mechanics (USRMS), November 16–18, 1970
Paper Number: ARMA-70-0241
... ABSTRACT Abstract The results from fracturing plexiglas beams are combined in eight existing equations to determine the surface energy of the material. The reliability of each equation is tested, and the equation in use to determine fracture toughness is found to be the most exact...
Proceedings Papers

Paper presented at the The 3rd U.S. Symposium on Rock Mechanics (USRMS), April 20–22, 1959
Paper Number: ARMA-59-0042
... was obtained: Equation (1) (Available in full paper) The surface energy s 8 is a non-equilibrium value because the surface was formed under non-equilibrium conditions. Due to the imposed conditions of equal initial and final temperatures and external pressures, the deformation energy change, ¿ D 8 , equals...

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