Abstract The metavolcanics of Chitradurga region host numerous shallow crustal veins and fractures faults multiple orientations. Several high low P f cycles have been recorded in the region, leading to reactivation most pre-existing for selective some well-oriented under conditions. anisotropy (magnetic fabric) acted as prominent planar fabric fracture propagation vein emplacement both conditio...

Low, intermediate and high strain rate tensile experiments are carried out on flat smooth, notched and central-hole tensile specimens extracted from advanced high strength steel sheets. A split Hopkinson pressure bar testing system is used in conjunction with a load inversion device to perform the high strain rate tension experiments. Selected surface strains, as well as local displacements, ar...

As a result of negligible connected porosity—and thus, minimal matrix permeability—the fluid-transport characteristics crystalline rocks are strongly influenced by the fractures at all scales. Understanding flow behaviour fractured rock under extreme stress and temperature conditions is essential for safe effective deep geo-engineering applications, such as geothermal recovery, geological nucle...

Introduction: Extensional fault scarps on Mars bear a striking resemblance to fault scarps on Earth, including geometric features such as horsts, grabens, relay ramps and breached relay ramps, en echelon arrangement of faults and grabens, and scaling characteristics [1], [2], [3]. Other surface features associated with extensional faulting on Mars are lines (" chains ") of circular topo-graphic...

This study conducts stress-controlled cyclic tension-tension tests from room temperature (RT) to 200 °C, at 50 °C intervals, on high-purity Cu films comprehensively understand the temperature-dependent fatigue life and related microstructural fracture characteristics. As evidenced by electron backscattering diffraction analysis, Ʃ3 boundary fraction decreases low-angle grain increases as increa...

To investigate the effects of abutment taper angles on the fracture strength of dental implants with TIS (taper integrated screwed-in) connection. Thirty prototype cylindrical titanium alloy 5.0mm-diameter dental implants with different TIS-connection designs were divided into six groups and tested for their fracture strength, using a universal testing machine. These groups consisted of combina...

The spatial distribution of rock fractures during water injection in hot dry (HDR) geothermal is essential information for evaluating well fracturing. produce anisotropic electrical characteristics, which may facilitate geophysical methods monitoring fracture distribution. This paper studies the magnetotelluric (MT) response fracturing based on finite difference method (FEM). It uses residual p...

The fracture initiation in ductile materials is governed by the damaging process along the plastic loading path. A new damage plasticity model for ductile fracture is proposed. Experimental results show that fracture initiation in uncracked ductile solids is sensitive to the hydrostatic pressure and is dependent on the Lode angle. The damage plasticity model is established on a "cylindrical dec...

42 Abstract:In this study, a test methodology for measuring load-dependent (mechanical) power losses of helical gear pairs is developed. A high-speed four-square type test machine is adapted for this purpose. Several sets of helical gears having 3 different pressure angles are manufactured, and their power losses under dip lubricated conditions are measured at various speed and torque levels. A...

In this work, we present numerical studies of fixed-stress iterative coupling for solving flow and geomechanics with propagating fractures in a porous medium. Specifically, fracture propagations are described by employing a phasefield approach. The extension to fixed-stress splitting to propagating phase-field fractures and systematic investigation of its properties are important enhancements t...