Table 6 Summary table of fatigue resistance reserve coefficients and design service life.

From: Calculating the fatigue strength of load-bearing structures of special self-propelled rolling stock

No. sections

1

1′

2

2′

2′′

3

3′

4

Before modernization

 n

2.35

1.49

3.06

1.81

4.96

1.59

2.7

1.93

 Tк

198.73

29.8

555.37

65.72

3835.0

40.7

338.33

89.3

After modernization

 n

2.6

2.1

4.39

3.64

5.04

1.59

2.7

1.93

 Tк

290.0

125.1

2348.1

1109.82

4083.4

40.7

338.33

89.3