Rock Direct Shear Apparatus( Electromechanical)

The Electromechanical Rock direct shear test apparatus is designed to determine the shear strength of intact or jointed rock or concrete specimens. Various samples in the form of cylindrical, prismatic, cubical or irregularly shaped segments of different sizes can be tested by this system. The closed loop servo control shear apparatus includes a special frame construction consisting of two stiff frames for vertical force and shear force, combined in a special configuration to avoid friction and torque.

The complete system is fully automated and controlled by our flexible and programmable GEOsys Software. Various sensors, transducers, testing and experiment options are available.

Inquiry

Get general catalogues

Features
Specifications
Upgrade Options
Software
Standards
Applications

Highly stiff and robust frame
Highly precise force transducers
Horizontal and vertical displacement transducers to measure shear strain and axial deformation
The shear boxes consist of a tilting free lower and upper shear frame, which is guided by linear bearings, a fixed upper shear frame and a guided load piston
High-speed, closed-loop control of load, displacement and position
Digital setting of P/I/D control parameters for optimization and test parameter tuning

Type of load frame	Electromechanical
Axial Force/Shear Force	100/100 kN
Specimen size	up to 200×200×200 mm
Stroke	100 mm
Accuracy	0.1%

Temperature control Upgrading for low and high temperatures
Different sample sizes
Measuring p- and s-wave in combination with acoustic emission

GEOsys Software for user defined freely programmable test standard procedures and complex test sequences via structured Windows operations on a graphic user interface.

Through a series of menus, this provides quick access to all the controls needed for test set ups and follows standard test sequences.

The software is able to create an unlimited number of test stages with interactive and calculated parameters for closed-loop, real-time control. An unlimited number of control and measuring channels can be simultaneously controlled.

ASTM D-5607

Standard Test Method for Performing Laboratory Direct Shear Strength Tests of Rock Specimens Under Constant Normal Force