.... In recent decades, non-destructive stress measurement methods have been developed as a reliable alternative to traditional methods. These methods are based on rock stress memory and rely on accurate measurements of strain and acoustic data during uniaxial cyclic loading of specimens. In this study, several...

... on the topic of observance and persistence of stress memory have been performed at relatively low stress levels under uniaxial conditions. Meanwhile, it has long been known history-dependent behaviors in cyclic loading of rocks depend heavily on confining stress (Zoback and Byerlee 1975). Therefore, this paper...

... - formation assembly is established to analyze the stress law of cement sheath. The integrity of the cement sheath is analyzed. The results show that the elastic modulus of cement is 6 GPa and the Poisson’s ratio is 0.17. The compressive strength and tensile strength of cement after cyclic loading are 90MPa...

... of full field strain measurement for locating the point of inflection in deformation rate analysis. Cyclic loadings were performed on Brazilian disc specimens of Adelaide black granite and the deformation process was monitored using digital image correlation (DIC) and AE monitoring system. The tests were...

... experiments, this paper introduces a novel cyclic injection procedure to effectively fracture rock at lower-than-normal breakdown pressure without incurring additional equipment or hardware costs. The experiments reveal that • With an optimized cyclic loading design, we can effectively and consistently...

... out true triaxle cyclic loading and unloading tests on granite, marble and sandstone. Duan (Duan et al., 2021)analyzed the influence of true triaxle graded cyclic intermediate principal stress on coal deformation, energy consumption and damage through experiments of coal mechanics and damage...

... ABSTRACT: Gas storage caverns built within rock salt formations experience cyclic loading conditions either when gas is injected into the storage or when the gas is retrieved. The behavior of polycrystalline rock salt under cyclic loading conditions is well documented in the literature...

... loading-unloading. From Hook s law, the elastic strain is given as: elastic E = (5) Then, the plastic strain can be calculated by substituting Eq.(5) in Eq. (4) which gives: plastic E = (6) Alternatively, can be calculated in the nominal space by = . 1.3. Cyclic Loading In order...

... and (2) well-designed adaptable modeling and calculating process. These two aspects are far from being fully studied. In this paper, triaxial compression and alternating loading tests were designed for cement stone. Its mechanical property under cyclic loading was revealed and could provide import...

... pressure, which is like the behavior of rock under uniaxial and tri-axial cyclic loading, cyclic injection can bring about fatigue. (2) For spiral perforation completion wellbore, the hydraulic fracture initiation only starts at the weakest perforation. Once a fracture is open, other perforation holes...

... cement property Upstream Oil & Gas damage mechanics cement chemistry pore pressure Simulation failure criterion cement formulation cyclic loading elasticity modulus cement sheath integrity triaxial compression test Reservoir Characterization casing and cementing criterion...

... by cyclic loading at room temperature and low confining pressure (Pc = 1 MPa). Load cycles are performed within the elastic regime, up to yielding, and after successive increments of steady ductile flow. At the tested conditions, the samples exhibit ductile behavior with slight work hardening...

...1. INTRODUCTION Rock engineering structures, such as underground tunnels, dam foundations and bridge abutments, are likely to be subjected to dynamic cyclic loadings resulting from earthquakes, rock blasting, rock bursts, etc. Widely existing in these rock structures, intermittent jointed rocks...

... as the cyclic loading. To evaluate the possible different impacts of regular and irregular cyclic loading on soil behavior, the irregular (real) urban noises data were converted to regular (modified) data. The result showed that although the total amounts of stress were equal in both regular and irregular data...

... Abstract: Laboratory experiments were conducted on prismatic Indiana limestone specimens with a flaw, to examine the effect of uniaxial cyclic loading on crack growth and, most importantly, the effect of opening/closing of the crack on transmitted and reflected elastic waves. All specimens...

.... The numerical simulation adopted an elasticplastic constitutive model that can take into account the long-term accumulation of soil deformation and excess pore water pressure under a huge number of cyclic loadings. The simulated results, including long-time displacement of soils around the tunnel, ground...

... with pre-existing cracks under static loading has been studied widely. In this study, the fracturing behaviour of Brisbane Tuff, under static and cyclic loading has been analysed applying an ISRM standard Cracked Chevron Notched Brazilian Disc (CCNBD) geometry. Specifically, X-ray Computed Tomography (CT...

... process is examined by the digital image correlation method, and it is shown that the length of the fracture process zone under cyclic loading is about 60% larger than that under monotonic loading. In parallel with the experiments, a theoretical model is developed to explain the observed size effect...

... scaling method reservoir simulation orientation Upstream Oil & Gas cyclic loading strength loading frequency microscopic stress fatigue damage amplitude frequency micro-macro modeling approach monocrystal loading polycrystal mechanism macroscopic stress viscous fatigue...

... Abstract The Solution Mining Research Institute (SMRI) has recently embarked on inquiries into the effect cyclic loading (both mechanical and thermal) might have on salt. Some of this interest stems from the concept of using salt caverns as a storage medium for renewable energy projects (e.g...