Experimental Analysis of Residual Stress and Bending Strength of Gear Tooth Surface after Shot Peening Treatment

Table 14

Distribution test results.

Lifetime distribution	Lifetime correlation coefficients (R) at different stress levels
	582.81	560.80	546.16	538.84
Lognormal distribution	0.9524	0.9644	0.9323	0.9734
Three-parameter Weibull distribution	0.9767	0.9676	0.9816	0.9707