... method tensile stress stress value Rock Mechanics and Rock Engineering: From the Past to the Future Ulusay et al. (Eds) © 2016 Taylor & Francis Group, London, ISBN 978-1-138-03265-1 A new design test apparatus for determining direct tensile strength of rocks K. Tufekci Mechanical Engineering...

... of the samples from the strain gages was transferred to a dynamic strain amplifier (with six channels) which was connected with load cell. Amplified signal was then sent to PC through A/D Converter that changes analogue signal to digital data. Table 1. Stress values determined from Kaiser effect. Sample Stress...

... than those on compression. Test results from quite a few authors have shown that for some rocks, Young's modulus in tension, ET, is much smaller than that in compression, Ee- As a consequence, large errors may arise in the stress values obtained from traditional methods for such rocks. Test results...

... at the inclination direction and different sections would be excavated separately. Artificial Intelligence direct roof Reservoir Characterization strength oxidized ore metals & mining stability analysis contour ore pillar excavation oxidized ore stope stress value stope Simulation tensile...

... structure Changeability mechanical parameter spatial changeability Artificial Intelligence elasticity periodical character peculiarity stress value deposit massif Eurock '93, Ribeiro e Sousa & Grossmann (eds) © 1995Balkema, Rotterdam, ISBN 90 5410 339 6 Peculiarities of the stressed condition...