15℃、0.45应力水平

空隙率

8.015%

6.512%

6.008%

5.012%

4.333%

疲劳寿命Nf

79

243

319

633

853

lgNf

1.898

2.386

2.504

2.801

2.931

降低1%空隙率疲劳寿命变化率

44.9%

47.3%

49.8%

38.0%

/

变化率均值

45.0%