Influence of the Cyclic Loading Path on Rock Deformation Memory Effect

Figure 7

Typical DRA curves by different rocks and stress levels.

(a) Granite A with a stress peak of 30 MPa, measurement loading at 40 MPa

(b) Granite B with a stress peak of 40 MPa, measurement loading at 60 MPa

(c) Sandstone C with a stress peak of 10 MPa, measurement loading at 15 MPa