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  • GDS Large Automated Direct Shear System(300mm)

    Model:GDSLADS
    Country of Origin:UK
    Use:GDS Large Automated Direct Shear System (GDSLADS) is an electromechanical direct shear testing device for large samples, up to 300mm square or round

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  • GDS Back Pressured Shear Box

    Model:GDSBPS
    Country of Origin:UK
    Use:The Back Pressure Shearbox (BPS) is our most advanced direct shearbox and has the unique feature of being able to perform direct shear tests with precise back pressure control, for the direct control and measurement of realistic slope failure. The BPS range includes both a saturated version (control of pore pressure) and an unsaturated version (control of both pore water and pore air pressure).

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  • Dynamic Back Pressure Shearbox

    Model:DYNBPS
    Country of Origin:UK
    Use: The Dynamic Back Pressured Shearbox (GDSBPS) is used for static and dynamic direct shear testing on soil specimens with control of sample pore pressures. The control of pore pressure during direct shear testing allows real-world situations to be modelled in the laboratory. This dynamic version of the device allows a landslide to be tracked as it quickly gains velocity after the intial moment of failure. GDS back pressure shearboxes have been used in the past to recreate landslide conditions in soils by accurately recreating rising groundwater conditions, and to test pre-existing failure plains in rock samples.

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  • Variable Direction Cyclic Simple Shear

    Model:VDCSS
    Country of Origin:UK
    Use:The variable direction cyclic simple shear system (VDCSS) allows simple shear to be performed in 2 directions, rather than the standard one. This is achieved by having a secondary shear actuator that acts at 90 degrees to the primary shear actuator. The VDCSS is similar in principle to the EMDCSS machine, except for the additional horizontal axis. All standard simple shear tests can be performed. When used as a variable direction machine, the secondary shear axis can be used independently of the other shear axis or in conjunction with is, therefore simple shear may be performed in any horizontal direction. Used for simulating change in wind direction on a wind turbine without having to remove the sample.

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  • Interface Shear Tester

    Model:GDSIST
    Country of Origin:UK
    Use:The Interface Shear Tester is a CRS consolidation cell with the additional ability that the base pedestal may infinitely rotate. The internal load cell measures both the axial force on the specimen as well as the torque generated. The system is designed to test the shear interface between the sample and the top-cap. Customers may bond specific materials to the top-cap for testing.

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