Item TF-1DETMXH
Stress Path Triaxial and Uniaxial Automatic Test System
CONTROLS Stress path triaxial and uniaxial automatic test system is designed to test various materials, from soft sandstone to high strength marbles.
Technical specifications
| Max. working pressure | 700 bar |
|---|---|
| Max. oil delivery | 2 lpm at low pressure, 0.7 lpm at high pressure |
| 4 hydraulic ports for connection of test frames | Flow control via servo-controlled proportional valve |
| 4 ON/OFF valves with electronic control | Hardware and on board software |
| Maximum resolution | 1/524,000 divisions |
| 8 input channels | 4 for load sensors (load cells or pressure transducers) |
| V EXC | from 0.5 to 10 V DC selected via software |
| Single/dual ended input | Input signal from -2.5 to +2.5 V DC |
| Test execution with control of | Load/specific load |
| 320×240 pixel display | Storage of multiple calibration curves for immediate connection of different sensors. |
| Low frequency Dynamic tests | max. frequency 0.1 Hz (depending on the wave amplitude) |
| Power rating | 750 W |
| Voltage | 230V, 50Hz, 1ph or 230V, 60Hz, ph or 110V, 60Hz, 1ph |
| Dimensions (lxwxh) | 470x410x1000 mm |
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| Weight approx. | 120 kg, excluding PC and printer |
|---|---|
| Max oil delivery | 0.7 l/min |
| Flow control via servo-controlled proportional valve | 4 additional channels for strain / displacement transducers |
| Weight approx. | 120 kg |
| Language selection | English, French, Spanish, Italian, plus another language which can be created by the user |
Technical notes
- ADVANTEST 9 ROCK Hydraulic group
- Oil cooling system with forced ventilation
- 4 for displacement transducers (potentiometric, LVDT amplified or analogical) and for deformation transducers (clip gauge, strain gauge).
- Electrical characteristics of the conditioners
- Zero and gain adjustable via software
- Data acquisition synchronized on all channels
- 8 analogical outputs corresponding to each channel for possible use of an external data acquisition system
- Displacement
- Strain
- Auto-diagnostic system including oil level and oil filter obstructed
- Phisical specifications
- SERCOMP 7 ROCK
- PC and SOFTWARE
- PC and printer of the latest generation
- Remotely control the entire system. Display graphical and numerical data including multi-plot mode, e.g. 3 different deformation curves with respect to a single time axis
- Execute tests and sequences of steps/cycles programmable by the user
- Print out test reports
- Allow the real time modification of the test parameters during the test execution, including active control channel
Features
- Axial load and sample strength
- Hoek cell confining pressure
- Sample deformation measured by strain gauges and external displacement transducers
- Axial and horizontal stresses are increased hysotropically up to a defined level
- Cell pressure is maintained constant and axial stress is increased
- When the sample approximates maximum strength, the cell pressure is automatically increased up to a defined level
- Cell pressure is again maintained constant and axial stress is increased
- When the sample again approximates maximum strength, the cell pressure is further increased
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- The above procedure is automatically repeated several times
- Maximum peak strength is reached and, in case of displacement control, the test is continued (softening phase)
- Cell pressure is reduced in steps and, for each step, the residual strength is measured
- All the maximum peak loads are plotted against corresponding values of cell pressure building the complete failure path.
- Advanced testing system suitable for extremely variable materials, from soft sandstone to high-strength marbles
- Determination of Elastic modulus, Poisson’s ratio and strength characteristics of rock specimens under uniaxial and triaxial conditions
- Automatic performance of triaxial tests with combined control of axial load and confining pressure
- Multiple failure stages triaxial test (stress – path mode) carried out automatically, the entire failure path is derived from a single specimen including post-peak softening phase
- Also suitable for load, stress, displacement and strain-controlled testing on concrete, fibre-reinforced and shotcrete specimens (with the relevant options and accessories)
- Fully programmable test procedures including axial load and confining pressure levels and combinations
- Integrated data acquisition and results elaboration including failure envelope plotting
- Extremely flexible system ideal for research purposes
Accessories
| Please refer to the links to other products below for more technical and commercial info about: |
| Compression frames |
| PC cabinet |
| Hoek cell and sample extruder |
| Strain gauges for uniaxial and triaxial tests |
| Compression device for uniaxial tests |