Bishop Ring Shear Apparatus
This advanced Bishop Ring Shear device is an advanced torsional shear apparatus, developed on the foundational concepts established by Bishop and his team in 1971 used to investigate post-peak shear resistance and shear displacement behavior, especially in clayey soils affected by slow landslides.
It is including of 2 separate electromechanical force actuator and high-quality mechanic and electronic components which produces repeatable test results, and the excellent quality makes it suitable for research and also usual test applications.
This device highlights the post-peak phase of shear resistance and displacement, concentrating on the residual strength characteristic of slow-moving clayey landslides.
The device is equipped with high-precision transducers, all of which have exceptional measurement accuracy and high resolution, ensuring the acquisition of detailed and reliable data.
The wide column spacing enables the accommodation of large shear boxes with sample sizes up to 200 mm O.D. and 150 mm I.D. The frame has high stiffness to reduce deflection and vibrations, which could influence the accuracy of measurements during repeated loading tests.
- Features
- Specifications
- Software
- Standards
- Applications
- True Bishop Ring Shear configuration
- Rigid load frame with double traverse
- Residual ring shear test under drained condition
- ICP testing method for interface tastings
- Automatic shear gap control mechanism
- Closed loop controlled axial displacement
- Closed loop controlled normal and shear stresses
- Parallel guided load piston without influence of tilting or friction on sample
- Dedicated software to control all testing sequences
- Stainless steel ring shear inserts for different sample sizes
- Wide range of axial and shear stress options
- True continuous shearing rate without inherent backlash
- High quality industrial controller with displayer and membrane keys or Touch panel and graphic display for monitoring of measured values and test procedures
- Real-time data and graph display
- Ethernet Port for fast data transferring to PC
- Safety functions to prevent overload and overtravel.
| Load type |
Electromechanical |
| Normal force |
5kN/ 10kN / 20kN |
| Shear force (Torque) | 420 N-m / 1100 N-m |
| Torsional shear displacement |
Unlimited |
| Resolution of shear stress: | <0.01 kPa |
| Resolution of Axial stress: |
<0.01 kPa |
| Accuracy class |
0.1% |
| Sample Sizes |
Outer/inner/height (mm) Ø100 / Ø 50 / 20 Ø200 / Ø 100 / 20 |
| Computer Interface |
Ethernet |
GEOsys is designed for closed-loop controlled static & Dynamic tests for all test applications in material testing, such as stress-controlled, strain-controlled, all stress paths, loops, any kind of waveforms like sine, rectangle, triangle, and predefined wavesIt is controlling and data acquisition software and also has different modules to run tests according to ASTM or BS or other standards. Please note that some tests listed below will require optional hardware. Depends on the requirement of the customer one or several modules would be delivered with main software, such as:
- Data Acquisition, processing and device management (DPD) Module
- Consolidation Module
- Static Shear Stage Module
- Constant Normal Stiffness Test (CNS)
- Residual Shear Test
- ICP Test Module
- Advanced loading Module
- Temperature Controlled Ring Shear Testing (Available for THM Ring Shear Test Device)
- Not available
- Detailed information will follow soon