Description
Digishear is the entry level machine for direct/residual shear testing. It incorporates one high-resolution stepper motor with high precision transmissions.
The user interface is based digital display LCD 4-row by 20 characters permitting to start, pause and stop the test.
The axial transmission of the horizontal force adopts a straight connection through shear box, shaft and load cell. This design avoids the load measurement inaccuracies occurring with the widely used “swan neck” basic design.
A high quality techno-polymeric material has been adopted for the carriage of the shear box, offering excellent resistance to corrosion, wear and tear and to the chemicals often mixed with the soil specimens. Furthermore, this polymeric carriage is lightweight and easy to clean.
Vertical load is applied directly to the specimen via a loading yoke and a weights holding arm which amplifies 10 times the applied value.
The machine can be supplied in two different configurations:
Analogue with load ring and dial gauges
Digital with load cell and displacement transducers that have to be connected to an external data acquisition system.
Technical Specs
- Maximum shear force: 5000 N
- Maximum vertical force: 500 N or 5000 N using 10:1 cantilever loading device supplied with the machine
- Maximum horizontal travel: 23 mm
- Test speed: from 0.00001 to 15.00000 mm/min
- Digital display: LCD 4 row by 20 characters
- Sample type and size: up to 100 mm square or round
- Overall dimensions: 1040 x 350 x 1200 mm (l x d x h)
- Multivoltage: Multifrequency power supply 230 V, 50 Hz or 110 V, 60 Hz
Accessories
Analogue measuring device
Load ring
27-WF1002/ST
Load ring 2 kN capacity, with adapters
27-WF1003/ST
Load ring 5 kN capacity, with adapters
Dial gauge
30-WF6401
Dial gauge for measuring vertical deformation, 12 mm travel and 0.002 resolution
30-WF6402
Dial gauge for measuring horizontal deformation, 30 mm travel and 0.01 resolution
Electronic measuring device
Load cell
27-WF0377/ST
Load cell 5 kn capacity, with adapters
Displacement transducers
30-WF6207
Linear potentiometric transducer, 10 mm travel, for vertical deformation, complete with mounting block
30-WF6208
Linear potentiometric transducer, 25 mm travel, for horizontal deformation, complete with mounting block
Datalogger
30-WF6008
Geodatalog 8
82-P9008/ELT
Set of four cable adapters
Shear box: including loading pad, base plate, 2 plain grind plates, 2 perforated grid plates and 2 sintered bronze porous stone
| Code 27- | WF0215/B | WF0216/B | WF0217/B | WF0218/B | WF0219/B | WF0222/B |
| Shape | Square | Square | Round | Round | Round | Round |
| Sample size [mm] | 60 | 100 | 50 | 60 | 63.5 | 100 |
| Sample cutter 27- | WF0215/B7 | WF0216/B7 | WF0217/B7 | WF0218/B7 | WF0219/B7 | WF0222/B7 |
| Extrusion dolly 27- | WF0215/8 | WF0216/8 | WF0217/8 | WF0218/8 | WF0219/8 | WF0222/8 |
Weight set
27-WF0230/C3
Weight set 37.5 kg comprising 2×0.25, 2×0.5, 2×1, 3×2, 3×4 and 2×8 kg weights
Additional weight set
27-WF0230/C4
Weigtht set 34 kg comprising 2×1, 1×2 and 3×10 kg weights
Data processing template
30-WF6016/T2
Direct and residual shear Geo-Analysis template conforming to BS 1377:7
30-WF6016/T9
Direct and residual shear Geo-Analysis template conforming to ASTM D3080
Note: in case of analogue acquisition template can be filled in manually
