Research Article

Research on Fatigue Damage of Compressor Blade Steel KMN-I Using Nonlinear Ultrasonic Testing

Table 4

Statistics of the cracks in the specimens.

Fatigue cycles

Number of cracks00134612
Length of cracks00812, 6, 718, 8, 4, 2630, 12, 25, 10, 14, 169, 7, 31, 13, 8, 11, 25, 58, 5, 11, 12
Equivalent crack length0082556107181