Rock Mechanics Subsystems
Precision components and sensors for triaxial and uniaxial testing
Indirect Tensile Strength Test System
Brazilian disc testing per ASTM D3967 & ISRM standards.
AE
Acoustic End Platens
Integrated P-wave and S-wave transducers for velocity measurement.
DA
Digital Acoustic Module
Digital acquisition module for acoustic velocity and AE signals.
AT
Advanced TWC End Platens
End platens for thick wall cylinder collapse testing.
Diametrical Strain Sensor (Cantilever Bridge)
Biaxial cantilever strain sensor for radial deformation and Poisson’s ratio measurement.
Radial Acoustic Sleeve
Precision transducer assembly for radial P-wave and S-wave velocity measurement.
RR
Radial Acoustic Ring
Sensor array for radial wave velocity measurement across the full circumference of rock cores.
A biaxial radial strain sensor that measures radial deformation in two orthogonal directions for accurate Poisson's ratio, elastic modulus and volumetric strain determination. Built for high-temperature, high-pressure confining fluid environments, it delivers stable, repeatable, temperature-compensated data through uniaxial, triaxial, hydrostatic and cyclic loading tests — from initial loading through failure.
Key Features
- Dual axis measurement
- Standard 100 mil-strain range
- Wide custom strain range options available
- 1”, 2” and 4” diameter options available
- Compatible with long and short duration tests
- 0.5% accuracy
- Temperature compensated
- Infinite resolution
- Standard calibration
- Mineral confining fluid rated
- High pressure rated connector
Specifications
| Performance | |
|---|---|
| Strain Deflection Range | 100 mils [2.54 mm] |
| Non-Linearity | ±0.1% Full Scale |
| Hysteresis | 0.08% Full Scale |
| Output Resolution | Infinite |
| Electrical | |
|---|---|
| Excitation Voltage | 5 VRMS |
| Excitation Frequency | 2.5 kHz |
| DC Excitation | 5 VDC |
| Calibration Data | Included |
| Environmental | |
|---|---|
| Operating Temperature (standard) | -50 to 100 °C [-58 to 302 °F] |
| Temperature Compensation Range | 15 to 200 °C [59 to 212 °F] |
| Temperature Effect | 0.002% of Full Scale |
| Hydrostatic Compression | 0.002% of Full Scale |
| Mechanical | |
|---|---|
| For Sample Diameter | 1”, 2” and 4” diameter samples |
| Flexure Material | Aluminum |
