... Einstein mechanism tensile crack Upstream Oil & Gas criterion crack growth Reservoir Characterization fracture loading condition crack initiation element method cohesive zone model specimen compression propagation crack tip single flaw Rock Engineering and Rock Mechanics: Structures...

.... 2008). Numerical model- ing of crack propagation has been an active research field since 1960s (Su, Yong & Liu 2010). Today, there are many software packages for crack- ing process modeling. These software packages evalu- ate crack growth and fracture parameters by numerical methods for complicate...

... Upstream Oil & Gas cutter crack growth boundary fracture stress intensity factor chip formation propagation mechanics eurock 2012 harcourt granite side boundary Modeling Rock chipping process in linear drag cutting mode S. Karekal CSIRO-CESRE(QCAT), Brisbane, Queensland, Australia...

..., Faculty of Eng. and Architecture, Isparta-Türkiye Abstract: This study aims at identifying the failure tendencies of rocks in relation with crack growth. Therefore, several disc shaped specimens with (H/D) ratio of 0.5 were prepared from various rocks. First, notches of four different lengths were sawn...

... Abstract Subcritical crack growth (SCG) is one of the main causes of time-dependent fracturing in rock. Therefore, it is important to study SCG in rock. Additionally, the information of the fracture toughness is also essential to know the fracturing in rock. In this study, the fracture...

... crack growth loading axis granite stress level Eurock 2005 -Impact of Human Activity on the Geological Environment - Konecny (ed) © 2005 Taylor& Francis Group, London, ISBN 04 1538 042 1 Influence of a 90° -rotation of the loading axis on acoustic emission behavior of parallelepiped specimens...

...Eurock 2005 - Impact of Human Activity on the Geological Environment - Konecny (ed) © 2005 Taylor & Francis Group, London, ISBN 04 1538042 1 Analysis of crack path for subcritical crack growth in rocks Y. Nara, T. Yoneda & K. Kaneko Graduate school of Engineering, Hokkaido University, Sapporo...

..., 1986). wellbore integrity approximation reservoir geomechanics Upstream Oil & Gas Rotterdam mechanism shear failure hydraulic fracturing concentration Dyskin crack growth Reservoir Characterization Wellbore Design borehole breakout borehole compression Rock Mech stability...

... the compacted bentonite used in backfilling. Upstream Oil & Gas Helsinki horizontal stress solid waste management rock mechanical analysis deposition tunnel reservoir geomechanics Thickness crack growth investigation site Reservoir Characterization strength deposition hole tunnel axis...

... ABSTRACT: Measurement of the fracture toughness K1C of rock was carried out through the evaluation of crack growth using calibration equations. Any point within the calibration range in the post-peak stage can be used to measure K1C. The AE monitoring revealed that large fracture processes...