ESD10.5 - Universal Shear Device
Direct Shear Testing, Cyclic Shear Testing, Simple-Shear-Tests acc. ASTM D6528-07
This universal and modular laboratory device is equipped with electromechanical spindle drives (in the vertical and horizontal spindle) for force, displacement and speed-controlled tests.
The device consists of a shear box type SSD5 shear box and a test press (equivalent to ELS25) for generating normal stress. The control electronics of the shear box are integrated in the housing of the test press. The shear box is placed in the center of the load frame in the same way as an oedometer or triaxial cell. If the shear box is electrically connected to the test press, the test device automatically recognizes the new functionality, adjusts the application on the touch screen accordingly and limits the maximum load to the value permitted for the shear box. If the electrical connections between the shear box and the load frame are separated, the universal test machine is available for odometer tests, uniaxial tests or triaxial tests with its full load range.
Characteristics:
- intuitive operation and easy handling with 4,3” touch screen with separate function keys and haptics
- high speed multi-core-system with bus coupling, each drive unit (e.g. horizontal and vertical gear) using it's own high resolution closed-loop controller with 1 ms sampling time
- precision electromechanical drive for controlled normal stress and shear stress generation
- testing with load independent shear rates
- rugged and functional construction, all surfaces in contact with the sample and all
water-swept parts of the shear device are made of stainless steel, incl. porous discs - very compact design with separate guide bars in the shear box; high stiffness frame (free of tilting)
- horizontal parallel guided lower shear box and a vertical parallel guided upper shear box designed as "floating" guidance; both with low-friction bearings
- vertical parallel guided load piston (free of tilting) using low-friction bearings
- testing with constant volume conditions / dilatancy-free testing
- continuously adjustment of the shear gap after consolidation, tilt-free, possibility to fix the shear gap (reducing of the gap during testing is blocked)
- measurement of a external analog signal (e.g. pore pressure sensor)
- serial interface for PC-controlled testing with data logging using a standard-PC with the software GeoDESC
availabe Accessories:
- accessories for sample preparation
- standard shear box dimensions:
5,0 cm² (circular, Ø = 25,4 mm)
36 cm² (60 x 60 mm)
40 cm² (circular, Ø = 71,4 mm)
50 cm² (circular, Ø = 79,8 mm)
70 cm² (circular, Ø = 94,4 mm)
100 cm² (100 x 100 mm)
special sizes on request - Simple-Shear-Box with accessories for sample preparation, circular Ø = 94,4 mm (70 cm²)
Specification:
maximum normal force:
25 kN (10 kN with shear box)
maximum shear force:
5 kN
maximum shear distance:
30 mm
shear rate:
0,001 .. 10 mm/min
setup speed:
50 mm/min (vertical movement)
25 mm/min (horizontal movement)
settlement measurement:
max. 60 mm, resolution 1 µm (depending on dial gauge)
shear path measurement:
25 mm (with dial gauge)
power supply:
230 V AC, 50/60 Hz
dimensions (WxDxH):
400 x 400 x 1500 mm
weight:
approx. 110 kg