The Cross-Scale Life Prediction for the High-Speed Train Gearbox Shell Based on the Three-Interval Method

Table 1

Weibull distribution parameter estimation when the stress amplitude is 220 MPa.

i	N	T	F(t)	x	y
1	24000	0.444444	0.129630	−0.81093	−1.97446
2	33000	0.611111	0.314815	−0.49248	−0.97269
3	39000	0.722222	0.500000	−0.32542	−0.36651
4	48000	0.888889	0.685185	−0.11778	0.144767
5	60000	1.111111	0.870370	0.10536	0.714455