The GCTS Differential Strain Curve Analysis Measurement Device (DSA-12) is designed to test cubical rock specimens under hydrostatic conditions in order to determine the in-situ stress state. The results obtained using the DSA-12 allow for characterization of the distribution of crack porosity with crack closure pressure as well as the crack orientation as a function of crack closure pressure amongst other parameters.
The DSA-12 comes with twelve high precision LVDT’s vented for high pressure with cables to connect to electrical feed-throughs inside a triaxial cell.
GCTS offers a hydrostatic triaxial cell (HTRX-DSA) for use with the DSA-12. The HTRX-DSA features stainless steel construction with a 140 MPa pressure capacity, 16 feed-through lines for in-vessel instrumentation, 3 fluid pressure connectors (cell, drain and bleed ports), and a 100 mm (4 inch) inside diameter.