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

Figure 13

The relationship between the damage variable and cycles under different prophase stress levels. (a) Upper limit of cyclic stress 105 MPa. (b) Upper limit of cyclic stress 115 MPa. (c) Upper limit of cyclic stress 125 MPa.

(a)

(b)

(c)