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Seismic dispersion and attenuation in saturated porous rocks with aligned fractures of finite thickness: Theory and numerical simulations - part 1: P-wave perpendicular to the fracture plane
(Society of Exploration Geophysicists, 2018-01)
When a seismic wave travels through a fluid-saturated porous reservoir containing aligned fractures, it induces oscillatory fluid flow between the fractures and the embedding background medium. Although there are numerous ...
Discrete fracture network model of the vapor zone leakages at the Copahue geothermal field
(Pergamon-Elsevier Science Ltd, 2020-08)
The volcano-hosted geothermal system of Copahue is one of the most promising resources of renewable energy in Argentina. It is driven by a layered reservoir composed of a steam cap above a deep liquid-dominated reservoir. ...
Essential work of fracture of photo-oxidized LDPE/EVA films
(Wiley, 2007-12)
The Essential Work of Fracture approach (EWF) was used to determine how UV-C irradiation alters the fracture behaviour of LDPE/EVA films. Complementary characterization was performed by FTIR, DSC, TOM, and uniaxial tensile ...
Boundary Element Method Analysis of Three-Dimensional Thermoelastic Fracture Problems Using the Energy Domain Integral
(American Society of Mechanical Engineers, 2006-11)
A boundary element method (BEM) implementation of the energy domain integral (EDI) methodology for the numerical analysis of three-dimensional fracture problems considering thermal effects is presented in this paper. The ...
Mechanical and fracture behavior of gelatin gels
(Chapman & Hall, 2013-06-21)
Hydrogels were prepared from bovine and porcine gelatin powders of different Bloom values. Gelatin concentration and pH were selected to obtain self-supporting gels with stiffness in the range of those employed in structural ...
Analysis of the stress intensity factor dependence with the crack velocity using a lattice model
(Wiley Blackwell Publishing, Inc, 2019-01)
In this work, the influence of crack propagation velocity in the stress intensity factor has been studied. The analysis is performed with a lattice method and a linear elastic constitutive model. Numerous researchers ...
Understanding informal carers experiences of caring for older people with a hip fracture: a systematic review of qualitative studies
(Taylor & Francis Ltd, 2018-03)
This systematic review aimed to reconceptualize experiences from a variety of papers to provide direction for research, policy and practice. Method: Meta-ethnography was used to inform the review, and 21 studies were ...
Improved technique for toughness testing of shale rocks
(Elsevier Science, 2020-08)
Mode I fracture mechanics tests of mostly calcareous Vaca Muerta shale rocks were performed in a new experimental device. A hydraulic system allows the injection of pressurized fluids inside of cracks to generate applied ...
Propagation regimes, transition times, and approximate universality in 2D hydraulic fracture propagation with fluid lag
(Elsevier Science, 2021-09)
During its lifetime, a hydraulic fracture is known to traverse a trajectory in a region of a parametric space of non-dimensional evolutionary parameters. The topology of this diagram depends upon the phenomena considered. ...
Boundary element method for J-integral and stress intensity factor computations in three-dimensional interface cracks
(Springer, 2005-06)
A general numerical tool for the analysis of three–dimensional bimaterial interface cracks is presented in this paper. The proposed tool is based on a multidomain formulation of the Boundary Element Method (BEM), with the ...