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Photoelastic Stress Analysis of Mode I Fracture Toughness Tests Using PMMA Samples
(IOP Publishing Ltd, 2021)
[Abstract] Rocks are usually inhomogeneous and anisotropic materials. The presence of foliation planes, grain boundaries or even microcracks may alter the stress distribution. In order to identify whether unusual behaviours ...
Hydrofracturing tests on granite samples using a true triaxial device equipped with acoustic emission sensors
(IOP Publishing Ltd, 2021)
[Abstract:] We present a series of tests performed on granite samples using a true triaxial device designed and built at the Rock Mechanics Laboratory (University of A Coruña). The experiments were performed using cubic ...
Anisotropic deformability and strength of slate from NW-Spain
(Elsevier, 2021)
[Abstract:] Slates are metamorphic rocks characterized by the pervasive occurrence of cleavage or foliation producing a highly anisotropic mechanical behavior characterized by fissility. Deformability and strength of these ...
Size effects on the tensile strength and fracture toughness of granitic rock in different tests
(Elsevier, 2023)
[Abstract:] This study investigates the tensile failure mechanisms in granitic rock samples at different scales by means of different types of tests. To do that, we have selected a granitic rock type and obtained samples ...
Size Effect and Other Effects on Mode I Fracture Toughness Using Two Testing Methods
(Elsevier, 2021)
[Abstract] Mode I fracture toughness (KIC) is an intrinsic material property that quantifies its resistance to tensile fracture propagation. The International Society for Rock Mechanics has endorsed four methods to determine ...
Hydrostatic, strike-slip and normal stress true triaxial hydrofracturing testing of Blanco Mera Granite: breakdown pressure and tensile strength assessment
(Springer, 2023)
[Abstract:] We have designed and built a versatile testing device to perform hydraulic fracturing experiments under true triaxial conditions. The device, based on a stiff biaxial frame that can be installed in a servocontrolled ...
CO2-Brine Substitution Effects on Ultrasonic Wave Propagation Through Sandstone With Oblique Fractures
(American Geophysical Union AGU, 2020)
[Abstract:] Seismic monitoring of injected CO2 plumes in fractured storage reservoirs relies on accurate knowledge of the physical mechanisms governing elastic wave propagation, as described by appropriate, validated rock ...
Analysis of the reduction processes at the bottom of Lake Meirama: a singular case of lake formation
(Springer, 2023)
[Abstract:] The formation of natural lakes is a process that takes place over thousands of years, although the volumetric formation depends on hydrological and climatological phenomena, reaching a stationary hydraulic ...
Experimental Device for the Determination of Fracture Toughness at High Pressure
(IOP Publishing, 2023)
[Abstract:] Mode I fracture toughness (KIC) is a relevant property in many applications involving rock mechanics. However, the conventional methods for its determination only consider ambient pressure conditions. Although ...
Experimental analysis of the pseudo-compact tension (pCT) testing configuration using two alternative sample geometries
(IOP Publishing, 2021)
[Abstract:] The pseudo-compact tension (pCT) method recently proposed by Muñoz-Ibáñez et al. (2020) is a satisfactory approach to measure mode I fracture toughness (KIC) in rocks and other materials using disc-shaped samples ...