||Benefits to the user
||Test control allows specification of amplitude of shear stress/strain as well as direction.
|Direction of shear and pattern of shear rotation from zero degrees can be defined:
- Constant at zero degrees.
- Rotate from zero degrees at a constant rate.
- Cycles from zero degrees plus or minus x degrees with period in seconds.
- Angles relative to zero e.g. 0, 10, 20, 30 etc. Definition of waveform by datum/common point, amplitude, controlling parameter and frequency.
|Teflon coated rings:
||K-zero conditions ensured by use of 1.1mm high, low-friction, PTFE coated rings.
|6 Axis Loadcell:||Highly accurate internally compensated measurement of all loads.|
|Independent axis control:
||Each axis can be load or displacement controlled.
|Local strain LVDT’s for both shear directions:
||Highly accurate strain measurement.|
|Pressure control:||Confining pressure up to 1MPa is applied by water and controlled using a Pneumatic Controller (GDSPPC) through a direct air/water interface within the cell. A second pressure controller is used to apply back pressure.|
|Pore water pressure transducer:||Highly accurate measurement of pore water pressure in all stages of testing.|