English only

Description:

• Stiff servohydraulically controlled press for acoustic emission (AE) and ultrasonic velocity measurements on triaxially stressed rocks.

Specifications:

• Sample size: < 50 x 100 mm
• Temperature: 25°C - 150°C (under construction)
• Confining Pressure: < 200 MPa (fluid)
• Axial load: < 4600 kN
• Stiffness (frame): 11 MN/mm
• Strain rate range: 10^-6 - 10^-2 s^-1

Features:

• Fast reacting servo-controlled hydraulic loading
• On-line AE-analysis
• Full AE-waveform storage
• High spatial resolution of AE-hypocenters by use of 16 piezoelectric sensors
• Pore pressure control

English only

Description:

• Paterson-type gas apparatus for triaxial deformation and torsion experiments under high pressure - high temperature conditions.

Specifications:

• Sample size: 10 x 20 mm
• Temperature: < 1300°C
• Confining Pressure: < 500 MPa (gas)
• Axial load: < 100 kN
• Stiffness (frame): 2 MN/mm
• Strain rate range: 10^-7 - 10^-1 s^-1
• Torque: < 1000 Nm
• Pore pressure: < 500 MPa

Features:

• Axial and/or torsional deformation
• Pore pressure control
• Ultrasonic velocities (under construction)
• Internal load, torque and displacement sensors

English only

Description:

Uniaxial creep rig for high temperature creep tests under controlled chemical environment (‘dead-load’ or stepper motor-controlled)

Specifications:

• Sample size: < 4 x 8 mm
• Temperature: < 1400-1800 °C
• Confining Pressure: 0.1 MPa
• Axial load: < 1-2 kN
• Stiffness (frame): 3 MN/mm
• Strain rate range: 10^-8 - 10^-4 s^-1

Features:

• Oxygen-fugacity control
• Frictionless loading
• High displacement accuracy