Heard-type VSR 1

Triaxial (conventional)

Texas A&M, Handin lab B26D

VSR 1

This 98-kN, variable strain-rate (VSR), Heard triaxial deformation apparatus can deform 20 mm diameter by 40 mm length specimens at confining and pore pressures to 120 MPa, temperatures to 300° C and strain rates from 10-4 to 10-7 s-1. The apparatus employs an internal load cell for sensitive and accurate measurement of force on weak rocks, sands, and marine sediments (for a stress resolution of 0.1 MPa) at confining pressures less than 120 MPa. This apparatus is ideal for longer-term tests of creep consolidation and fluid flow properties.

Loading; Unloading; Heating; High Temperature; High Pressure; Hydrostatic Tests; HIP; Elastic Moduli; Yield Strength; Failure Strength; Strength; Creep; Friction; Frictional Sliding; Slide Hold Slide; Stepping; Pore Fluid Control; Pore Volume Compaction; Storage Capacity; Permeability; Drained/Undrained Pore Fluid; Triaxial Stress/Strain; Differential Stress; Acoustic Events; P-Wave Velocity; S-Wave Velocity