1-20 of 64
Keywords: crack growth
Close
Follow your search
Access your saved searches in your account

Would you like to receive an alert when new items match your search?
Close Modal
Sort by
Proceedings Papers

Paper presented at the 57th U.S. Rock Mechanics/Geomechanics Symposium, June 25–28, 2023
Paper Number: ARMA-2023-0934
... to nearzero. Laboratory testing and analytical studies were conducted by Dyskin et al. (2003) and Wang et al. (2018) to examine the mechanisms of 3D crack growth in biaxial compression and in-situ spalling strength at excavation boundaries. Through their experiments on transparent casting resin samples...
Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-1758
... beyond which SCC may fail, we need to understand SCC's atomic mechanisms. In this study, stress corrosion cracking of the pre-cracked crystalline quartz is considered using a reactive molecular dynamics simulation. The results show that water has a strong influence on subcritical crack growth...
Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-1061
... failure mechanism sandstone complex reservoir granite sample crack growth brittleness index granite tensile cracking sandstone sample compression failure mechanism brittleness uniaxial compressive test comparative study brittle rock crack initiation ARMA 21 1061 Comparative study...
Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-1618
... and the yielded coal seam. In addition to the above, the subcritical crack growth model was adopted in conjunction with the proposed analytical model to estimate the possible location and failure time of the hard roof strata. 1. Introduction The movement, fracturing and caving processes of roof strata...
Proceedings Papers

Paper presented at the 52nd U.S. Rock Mechanics/Geomechanics Symposium, June 17–20, 2018
Paper Number: ARMA-2018-187
... crack length brittleness index Reservoir Characterization hydraulic fracturing injection pressure crack growth enhancement extension principal stress fracture permeability evolution Magnitude deformation in-situ stress propagation 1. BACKGROUND United States has benefited economically...
Proceedings Papers

Paper presented at the 52nd U.S. Rock Mechanics/Geomechanics Symposium, June 17–20, 2018
Paper Number: ARMA-2018-943
... shows that the hydraulic fractures could propagate continuously after the main fracturing stage (pump off)[8-9]. It could be explained by the mechanism of subcritical crack growth[10]. This process may take a period of time, and is beneficial to the following hydraulic fracturing treatment. The main...
Proceedings Papers

Paper presented at the 51st U.S. Rock Mechanics/Geomechanics Symposium, June 25–28, 2017
Paper Number: ARMA-2017-0150
... Characterization surface subsidence mechanism creep response particle compaction breakage Artificial Intelligence dissipation rate function Grain Breakage Corrosion Index subsidence equation creep propagation crack growth fracture mechanics breakage model creep curve deformation 1...
Proceedings Papers

Paper presented at the 51st U.S. Rock Mechanics/Geomechanics Symposium, June 25–28, 2017
Paper Number: ARMA-2017-0747
... ABSTRACT: The problem of thermal crack growth due to cold-water injection has been an important issue as a means of reservoir permeability enhancement in geothermal reservoirs. In this paper, we present numerical investigation of thermal crack growth in the vicinity of a borehole...
Proceedings Papers

Paper presented at the 51st U.S. Rock Mechanics/Geomechanics Symposium, June 25–28, 2017
Paper Number: ARMA-2017-0815
... ABSTRACT: Stress strain behavior of low-porosity crystalline rocks is divided into four characteristic stages: crack closure, elastic region, stable crack growth and unstable crack growth which leads to brittle failure. The beginning of stable crack growth is called the crack initiation...
Proceedings Papers

Paper presented at the 50th U.S. Rock Mechanics/Geomechanics Symposium, June 26–29, 2016
Paper Number: ARMA-2016-498
...). Wellbore Design tertiary creep wellbore integrity Martin fracture strength Reservoir Characterization strength crack growth specimen MPa creep Upstream Oil & Gas experiment radial strain differential stress millistrain partial pressure constant stress tuff strain rate static fatigue...
Proceedings Papers

Paper presented at the 50th U.S. Rock Mechanics/Geomechanics Symposium, June 26–29, 2016
Paper Number: ARMA-2016-581
... Abstract: Assessing long-term rock stability is an important aspect in the analysis of slopes, dam and bridge foundations, and other infrastructure. At such long time scales, rock failure occurs through time-dependent methods such as subcritical crack growth. Natural analogs, such as caves...
Proceedings Papers

Paper presented at the 49th U.S. Rock Mechanics/Geomechanics Symposium, June 28–July 1, 2015
Paper Number: ARMA-2015-597
... system was used to observe the fracture behavior at the tip of the notch of SNDB samples during dynamic impact loads. The fracture planes around the notch tip of the tested samples were observed by microfocus X-ray CT scanner. crack growth loading rate dependency rock sang-ho cho toughness...
Proceedings Papers

Paper presented at the 49th U.S. Rock Mechanics/Geomechanics Symposium, June 28–July 1, 2015
Paper Number: ARMA-2015-713
... increase. Even aside from considering fractures, we find it also has well behaved numerical properties, and does not generally require special stabilization approaches like some other gridless methods, such as Smoothed Particle Hydrodynamics (SPH). Therefore, a desire tomodel dynamic crack growth...
Proceedings Papers

Paper presented at the 48th U.S. Rock Mechanics/Geomechanics Symposium, June 1–4, 2014
Paper Number: ARMA-2014-6995
...], is likely affected substantially by coupled thermo-hydro- mechanical deformation. Instead of investigating the thermally activated multiple interacting crack growth and patterns [9,13,14], we consider the growth of one single fracture subject to a constant pressure, which is less than the far-field...
Proceedings Papers

Paper presented at the 48th U.S. Rock Mechanics/Geomechanics Symposium, June 1–4, 2014
Paper Number: ARMA-2014-7398
... geomechanics creep axial strain dependency fjær stress level Upstream Oil & Gas crack growth dynamic moduli Symposium FORMEL model hold period deformation Rock mechanics geomechanics Symposium 1. INTRODUCTION Time-delayed deformation is a phenomenon that can be observed both in laboratory...
Proceedings Papers

Paper presented at the 48th U.S. Rock Mechanics/Geomechanics Symposium, June 1–4, 2014
Paper Number: ARMA-2014-7622
... also indicate that there is a small-crack growth regime at the beginning stage, where the growth rate decreases as the crack propagates. The fracture kinetics for both the small-crack growth and the Paris regimes is subjected to a strong size effect. During the strength and fatigue tests, the damage...
Proceedings Papers

Paper presented at the 46th U.S. Rock Mechanics/Geomechanics Symposium, June 24–27, 2012
Paper Number: ARMA-2012-444
... mechanics Upstream Oil & Gas reservoir geomechanics hydraulic fracturing modeling crack length specimen fracture trajectory porosity configuration specimen size strength scale effect criterion crack arrest crack growth probability facture toughness aggregate size 1. INTRODUCTION...
Proceedings Papers

Paper presented at the 46th U.S. Rock Mechanics/Geomechanics Symposium, June 24–27, 2012
Paper Number: ARMA-2012-615
... extended to the back surface of the specimen and the petal cracks formed a type of crack arrays (Fig. 1b). Cannon et al. [10] tested PMMA material containing an Fig.1. Crack growth from a 3-D pre-existing surface crack: in (a) glass [8]; (b) marble (back surface) [8]; and (c) PMMA [11]. open pre-existing...
Proceedings Papers

Paper presented at the 46th U.S. Rock Mechanics/Geomechanics Symposium, June 24–27, 2012
Paper Number: ARMA-2012-274
... propagation path. Numerical experiments are carried out to study fracture propagation trajectories compared with elasticity solutions. The numerical results indicate that the fracture growth under undrained condition does not show distinctive differences because the crack growth is so fast that the pore...
Proceedings Papers

Paper presented at the 46th U.S. Rock Mechanics/Geomechanics Symposium, June 24–27, 2012
Paper Number: ARMA-2012-425
... borehole were numerically simulated in [13-15]. In [14], propagation of some crack was described qualitatively. reservoir geomechanics Artificial Intelligence thermally hydraulic fracturing fracture toughness crack growth Reservoir Characterization Upstream Oil & Gas crack length radial...

Product(s) added to cart

Close Modal