Uploading. Please wait...
0%
Apparatus
Apparatus Info
High-speed biaxial rig
Biaxial
Texas A&M, Handin lab B34
HSB
Biaxial apparatus suited for rock friction tests at seismic rates. The load frame can measure frictional properties in double-direct-shear under normal stresses up to 30 MPa, slip rates up to 1 m/s, and total displacements up to 35 mm. The pneumatic-powered loading frame with adjustable venting speed and hydraulic damper can run velocity stepping experiments with controlled velocity profiles and stick-slip. The LabVIEW FPGA data acquisition platform enables high-speed data acquisition up to 50 kHz, and an infrared camera with high frame-rate sampling (up to 1200 frame-per-second) can record fault surface temperature evolution at sub-millisecond resolution.
Apparatus Features
Loading; Unloading; Friction; Frictional Sliding; Slide Hold Slide; Stepping; Dynamic Tests; Biaxial Stress/Strain; Acoustic Events; Infrared
Apparatus Parameters
Name Minimum Maximum Unit Prefix Detail/Note
σ1-Load 1 30 MPa - Normal stress
Displacement Rate 1 1000 mm·sec-1 -
Temperature 20 25 degC - ambient temperature; surface temperature depend on slip rate and normal stress
Temperature 20 800 degC - IR camara detection limit
Temperature 30 1200 sec-1 - IR camera frame rate
Apparatus Documents
Picture
jpg
Picture
jpg
Funded by the National Science Foundation    |    Maps provided by Mapbox    |    EarthCube Partner