Study on the Influence of Different Prophase Stress Levels on the Fatigue Damage Characteristics of Granite

Figure 5

Stress-strain curves of rock samples under different prophase stress levels with the same upper limit cyclic stress. (a) Prophase stress level 125 MPa. (b) Prophase stress level 130 MPa. (c) Prophase stress level 135 MPa.

(a)

(b)

(c)