| ETAS – Environmental Triaxial Automated System The environmental triaxial automated system (ETAS) is based on the standard GDSTAS, with a high pressure triaxial cell and heating/cooling system included. The temperature system is automatically controlled alongside the regular triaxial system components via software, with the full range of triaxial test software modules available for use with the HPETAS. Upgrade options can also be specified, including the addition of bender elements, hardware for unsaturated soil testing, and local strain transducers. |
| ETTS – Environmental Triaxial Testing System The high pressure environmental triaxial testing system (ETTS) is based on the standard GDSTTS, with a high pressure Bishop and Wesley style cell and heating/cooling system included. The temperature system is automatically controlled alongside the regular triaxial system components via software, with the full range of triaxial test software modules available for use with the ETTS. Upgrade options can also be specified, including the addition of bender elements, hardware for unsaturated soil testing, and local strain transducers. |
| GDSVIS – The GDS Virtual Infinite Stiffness loading system Is the premier load frame in the GDS range with load capacities of 250kN or 400kN. The GDSVIS load frames are designed to be stiffer than classical loading frames. This is to allow more accurate testing of stiffer specimens with less equipment compliance. Furthermore each GDSVIS is internally calibrated to allow automatic self-compensation for any remaining compliance. This type of frame is exclusive to GDS. When combined with a triaxial cell, pressure/volume controllers, data acquisition, and temperature control system, the GDSVIS enables the response of soil and rock under frozen conditions to be observed and quantified. |
| DYNTTS – The Advanced Dynamic Triaxial Testing System Is a high-end, no compromise testing apparatus combining a triaxial cell with a dynamic actuator capable of applying load, deformation and stresses up to 10Hz. The cell itself is screw-driven from an integral base unit housing the motor drive. Axial force and axial deformation are applied through the base of the cell. The system can be combined with a dynamic cell pressure actuator such that cell pressures may also be applied dynamically up to fundamental frequency of the machine (i.e. 2Hz, 5Hz or 10Hz). Additionally the DYNTTS may be upgraded to include a temperature control system, enabling the dynamic cyclic response of soil to be observed and quantified when placed under frozen conditions. |