The GDS Combined Advanced Dynamic Cyclic Simple Shear (ADVDCSS) testing system is a new innovation by GDS in that it combines Simple shear and Triaxial testing without the use of a separate loadframe. The ADVDCSS uses our established technology of Electro-Mechanical actuators which are designed for long life and highly accurate position control. Unlike pneumatic actuators this type of actuator is even suitable for carrying out small strain testing, long term creep tests and dynamic tests up to 5Hz. The system converts from a simple shear test to triaxial test in about 15 minutes by replacing the cell wall with a shorter one and raising the position of the lower platen using the built in lift system to allow for the shorter sample length of simple shear tests.

Unit 32 Murrell Green Business Park, London Road, Hook, Hampshire, RG27 9GR, UK. Tel.:+44 (0) 1256 382450, FAX:+44 (0) 1256 382451, e-mail:sales@gdsinstruments.com