Up to now, mainly uniaxial accelerometers are described in most publications concerning this subject. However, triaxial accelerometers are needed in the biomedical field. Commercially available triaxial accelerometers consisting of three orthogonally positioned uniaxial devices do not meet all specifications of the biomedical application. Therefore, a new highly symmetrical inherently triaxial ...

This study was aimed at highlighting the effect of loading frequency on sand liquefaction response by performing cyclic triaxial tests in both stress-controlled and strain-controlled modes. For first case, dense (IDmat = 0.70) medium-dense 0.55) specimens were subjected to alternative non-alternative axial stresses; whilst strain over a wide range frequencies second case. It experimentally foun...

Rock engineering is highly susceptible to cyclic loads resulting from shale gas exploitation; it very important study the failure mechanism of underground rock mass under load. To investigate energy dissipation and damage evolution characteristics triaxial loading unloading conditions, a series incrementally tests different confining pressures (10 MPa, 15 20 30 MPa) were carried out. The variat...

A new failure criterion was presented to predict the ultimate strength of shale under the triaxial and polyaxial state of stress. A database containing 93 datasets was obtained from the results of the uniaxial, triaxial, polyaxial compressive tests, an indirect tensile test was collected from reliable references, and this test was carried out on the shale samples taken from the southwestern oil...