Wille Geotechnik - Model HP-HT -High Pressure - High Temperature Rock Triaxial System

The systems are able to test a range of materials from soft rock (e.g. sandstone) to hard rock for different applications in rock mechanics research e.g. Exploration and production of fossil fuels, Mining and construction, Tunneling and Geothermal energy development.

GEOsys software, with several testing modules/applica¬tions controls the test procedures, means it can work as a fully automated system and provides an easy way to create custom test modules. It enables the users to applying different stress paths or strain rates with real-time graphics with zoom and freeze functions for printer output at any time (after and during the test).

• High stiffness 4 columns load frame with different load ranges with double acting actuator up to 5,000kN
• Frame’s Stiffness up to 10,000kN/mm
• Wall type load frame is available on request
• Advanced high-quality hydraulic power packs with high-quality noise protection, different emergency functions or cyclic test procedures
• Triaxial cells up to pressure of 210 MPa and temperature of +250 °C degree
• Carriage assembly for easy removal and placing of triaxial cell or automatic lifting cell wall system (on request)
• Dynamic high-speed, closed-loop control of load, displacement, position and volume or flow
• Expandable real-time high resolution data acquisition and closed-loop control systems up to 20 bit with an unlimited number of control axis and sensor channels
• Flexible controlling software for nearly unlimited test procedures of all uniaxial, triaxial or polyaxial test applications with pore pressure and permeability
• Different types and ranges of high quality transducers for external or internal on-specimen use are available, such as strain measurement, wave velocity, acoustic emission and electrical impedance measurement.
• Advanced high quality hydraulic power packs with high-quality noise protection, different emergency functions or cyclic test procedures
• Digital setting of PID parameters to test parameter optimization and tuning
• Freely programmable test stages with interactive, calculated parameter and test procedures
• Real-time graphics with zoom and freeze functions for printer output at any time

• Type of load frame Servo-hydraulic
• Axial load Up to 5,000 KN
• Tension load capacity Up to 2,500 KN
• Confining pressure Up to 210 MPa
• Pore pressure Up to 210 MPa
• Working temperature Up to 250 °C
• Frame stiffness Up to 10,000 kN/mm, >10 x 10^9 N/m
• Stroke 50 mm (optional up to 150 mm)
• Hardness 55 HRC /customised
• Sample sizes* Up to Ø 150 mm (height ratio 2:1)

• Transparent test area guard for protection
• Automatic lifting system integrated into load frame for lifting automatically up the cell wall
• Pneumatic sliding system to slide the cell from testing area to sample set up area
• Upgrading load frame to higher stiffness
• Large numbers of high pressure feed throughs for measuring sensors inside the cell

GEOsys software for user defined freely programmable test standard procedures and complex test sequences.

This is implemented by a structured Windows operation on a graphic user interface for controlling and data acquisition software. This is used for closed-loop controlled static & dynamic applications in material testing (rock and concrete) with freely programmable test sequence control and formula editor functions.

Through a series of menus, this provides quick access to all the controls needed for test set-up and follows
standard test sequences.

The software is able to create an unlimited number of test stages with interactive and calculated para meters
for closed-loop control in real time. An unlimited number of control and measuring channels can be
simultaneously controlled.

• Possibility to accept different modules for extra test
• Individually configurable data acquisition (collecting rate, parameter setting, recording type, such as ASCII)
• Interactive changing of test parameters for all channels or test devices during the application
• Various platforms for operators and different users for system parameter settings (configuration, PID parameters, transducer configuration, ranges plausibility)

Self-diagnosis and automatic alerts when a problem occurs. When a sudden power failure occurs, the system automatically saves data and takes self-protective measures and has an overload protection