Results 191 to 200 of about 1,909,198 (259)

True Triaxial Stresses and the Brittle Fracture of Rock

Pure and Applied Geophysics, 2006
This paper reviews the efforts made in the last 100 years to characterize the effect of the intermediate principal stress σ2 on brittle fracture of rocks, and on their strength criteria. The most common theories of failure in geomechanics, such as those of Coulomb, and Mohr, disregard σ2 and are typically based on triaxial testing of cylindrical rock ...
openaire   +1 more source

Behavior of EPS geofoam in true triaxial compression tests

Geotextiles and Geomembranes, 2008
Abstract This paper investigates the behavior of EPS geofoam in a true triaxial apparatus using 70 mm×70 mm×140 mm prismatic brick-shaped specimens. The specimens are subjected to different stress paths in the deviator ( π ) plane by means of stress-controlled loading, in which the axial stress is imposed at a rate of 75 kPa/min in the major ...
Leo, Chin Jian (R8045), Kumruzzaman, Md., Wong, Henry, Yin, Jin H.   +3 more
openaire   +2 more sources

A True Triaxial Cell for Soil and Rock

1988
The design and performance of a membrane-piston, high-pressure (σ2 − σ3 ≦ 300 MN/m2) cell are presented. This device is similar to the one used for standard triaxial tests differing only in the stresses, σ2 and σ3, which are independently applied through flexible polyvinyl chloride (PVC) fluid cushions on prismatic specimens.
openaire   +1 more source

Development of a True Triaxial Testing Facility for Composite Materials

2000
An electromechanical testing facility capable of applying any combination of tensile and/or compressive forces to three mutually orthogonal axes of a thickness-tapered composite cruciform specimen was designed, fabricated, assembled, and evaluated. Any stress ratio in biaxial (σ1 - σ2) or triaxial (σ1 - σ2 - σ3) stress space can be explored using this ...
JS Welsh, DF Adams
openaire   +1 more source

Behaviour of carbonated rocks under true triaxial compression

2011
A true triaxial testing device has been developed in the nineties in the mining department of the Faculty of Engineering, Mons-Belgium. Since then data have been gathered from several rocks, among which various carbonated rocks exhibiting different mechanical behaviours.
Descamps, Fanny, Ramos da Silva, Mikael, Schroeder, Christian, Verbrugge, Jean-Claude, Tshibangu, Katshidikaya   +4 more
openaire   +3 more sources

Failure of Castlegate Sandstone Under True Triaxial Loading

2011
A test series designed to investigate and quantify the effect of the intermediate principal stress on the failure of Castlegate sandstone was completed. Using parallelepiped specimens and a true triaxial testing system, constant mean stress tests were conducted. Stress states ranged from axisymmetric compression to axisymmetric extension.
Mathew D. Ingraham, Kathleen A. Issen, David J. Holcomb   +2 more
openaire   +1 more source

Experimental study on mechanical and damage characteristics of coal under true triaxial cyclic disturbance

Engineering Geology, 2021
Minke Duan, Xu Jiang, Jiazhuo Li
exaly  

True Triaxial Shear Strength and Failure Mechanism of Sandstone Under Real-Time High-Temperature Conditions

Rock Mechanics and Rock Engineering
Jun Zhao, Yue Guo, Peisi Chen, Liang Hu, Jiarong Wang   +4 more
semanticscholar   +1 more source

Effect of lateral stress and loading paths on direct shear strength and fracture of granite under true triaxial stress state by a self-developed device

Engineering Fracture Mechanics
Zaobao Liu, Binhui Liu, Liang Chen, Feng Tian, Jianyu Xu, Jian Liu, Qiang Yang, B. Zhu   +7 more
semanticscholar   +1 more source

Damage evolution and acoustic emission characteristics of sandstone under different true triaxial cyclic loading and unloading modes

Engineering Failure Analysis
Qihang Zhang, Xiang-rui Meng, Guangming Zhao, Ying-ming Li, Wensong Xu, Chongyan Liu, Zhixi Liu, Xukun Wu, Z. Qin, Kun Wang   +9 more
semanticscholar   +1 more source