Description
The Autoshear by Wykeham Farrance is an automatic machine for direct/residual shear testing.
It incorporates a high-resolution stepper motor fitted with a high precision load transfer mechanism.
Via the large 6″ touch screen colour display the user can start, pause and stop the test, select the data-recording mode, view the readings and the diagrams during the test execution and carry out the transducers calibration (load cell and two displacement transducers).
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.
Load cell and displacement transducers, weight and shear box assembly shall be ordered separately (see accessories and related products)
Load ring and dial gauge are also suitable for manual recording.
Standard complete configuration is composed by:
- Autoshear
- Shear box (see accessories and related products)
- Vertical displacement transducer (see accessories and related products)
- Horizontal displacement transducer (see accessories and related products)
- Load cell (see accessories and related products)
- Set of Weight (see accessories and related products)
- SoilMaster P&R Processing and Reporting (see accessories)
Main Features
- User interface 6″ touch screen colour display for numerical and graphical plotting of the readings
- Maximum horizontal force: 5 kN
- Maximum vertical force: 5 kN, using the 10:1 cantilever device
- Three analogue channels. one for load cell and two for displacement transducers
- Effective channel resolution: 131,000 points
- Infinitely variable speed from 0.00001 to 15.0000 mm/min
- High stiffness load chain shear box – driving head – load cell
- Compatible with shear boxes up to 100 mm diameter or square
- USB pen drive for unlimited storage capacity and TXT format data output
- Optional PC control via LAN port and dedicated software
- Sturdy shear box techno-polymeric carriage untouchable by corrosion
- Adjustable speed and travel (forward and reverse) for residual shear test
- Number of cycles adjustable from 1 to 50
- Specific and independent data recording for consolidation and failure stages
Specifications
Maximum shear force: 5000 N
Maximum vertical load: 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
Maximum number of a shear cycles: 50
Sample type and size: up to 100 mm square or round
Overall dimensions (l x d x h): 1040 x 530 x 1200 mm
Weight: 60 kg approx.
Multivoltage: Multifrequency power supply 230 V, 50 Hz or 110 V, 60 Hz
Ordering Information
| 27-WF21A60 | AUTOSHEAR – Direct and residual shear testing machine with automatic built-in data acquisition. 220-100 V / 50-60 Hz / 1 PH. |
Accessories
Shear Boxes
| 27-WF0215/B | Shear box for square specimen 60x60mm |
| 27-WF0216/B | Shear box for square specimen 100x100mm |
| 27-WF0218/B | Shear box for 60mm dia samples |
| 27-WF0219/B | Shear box for 63.5mm dia samples |
| 27-WF0222/B | Shear box assembly for 100mm diameter sample |
Sample Cutter
| 27-WF0215/B7 | Sample cutter for 60mm square samples |
| 27-WF0216/B7 | Sample cutter for 100mm square samples |
| 27-WF0217/B7 | Sample cutter for 50mm dia samples |
| 27-WF0218/B7 | Sample cutter for 60mm dia samples |
| 27-WF0219/B7 | Sample cutter for 63.5mm dia samples |
| 27-WF0222/B7 | Sample cutter for 100mm |
Extrusion Dollies
| 27-WF0215/8 | Extrusion dolly for 60mm square samples |
| 27-WF0216/8 | Extrusion dolly for 100mm square samples |
| 27-WF0217/8 | Extrusion dolly for 50mm dia samples |
| 27-WF0218/8 | Extrusion dolly for 60mm dia samples |
| 27-WF0219/8 | Extrusion dolly for 63.5mm dia samples |
| 27-WF0222/8 | Extrusion dolly for 100mm |
Slotted Weight Sets
| 27-WF0230/C3 | Set of slotted steelweights tot.37.5kg: 2×0.250kg;2×0.500kg; 2x1kg; 3x2kg; 3x4kg; 2x8kg. |
| 27-WF0230/C4 | Additional set of slotted steel weights: 2x1kg; 1x2kg; 3x10kg. |
Sensors
| 30-WF6207 | Linear potentiometric transducer, 10mm travel, with 6 pin Lumberg connector complete with mounting block |
| 30-WF6208 | Linear potentiometric transducer, 25mm travel, with 6 pin Lumberg connector complete with mounting block |
| 27-WF0377/ST | 5 kN load cell, complete with adaptors for shear machine 27-WF20D60 and WF21A60 |
Template for data processing
| 30-WF9000/PR | SOILMASTER P&R Processing and Reporting. All-in-one modular software for data processing and reporting for the following test and Standard: – Consolidation: EN 17892-5; ASTM D2435 ; AS 1289.6.6.1 – Direct/ResidualShear: EN 17892:10; ASTM D3080; AS 1289.6.2.2 – Triaxial Total Stress: EN 17892:8; ASTM D2850; AS 1289.6.4.1 – Triaxial Effective Stress: EN 17892:8; ASTM D4767 and ASTM D7181; AS 1289.6.4.1 – Permeability: EN 17892:12; ASTM D5058 and D5856 – Unconfined Test: EN 17892:7; ASTM D2166. Software can received data from WF Standard or Automatic as well as third party machines. All of these tempaltes have an independent trial period that can be activated buying licence. This code is referred to a single template activation, in case of two or more templates shall be activated quantity shall be selected accordingly. |
Software for PC Control
| 30-WF9000/TA | SOILMASTER T&A, Testing and Acquisition. Sofware for testing and data acquisition of one or more units of the following automatic consolidation and shear, Pc-controlled, group of machines: – ACE, ref. code 26-WF31E20 – SHEARMATIC, ref. code 27-WF21E80 – AUTOSHEAR, ref. code 27-WF21A60 – TORSHEAR, ref. code 27-WF22E202 This code is referred to the activation of a single machine type. In case of two diffrent machine types, the selected quantity shall be selected accordingly. |
Computer Requirements
The minimum requirements of the PC are as follows:
• Intel core i5 (or equivalent) or higher
• 1GB of free hard disk space
• Microsoft Windows 7 or later
• RAM memory 8GB or more
• Screen resolution of 1920 x 1080 pixels or higher
