A Modified Walker Model Dealing with Mean Stress Effect in Fatigue Life Prediction for Aeroengine Disks

Figure 4

Equivalent completely reversed stress amplitude versus fatigue life correlations for GH4169 superalloy (650°C) for the (a) Goodman, (b) Morrow, (c) SWT, and (d) modified Walker methods.

(a) Goodman, GH4169 650°C

(b) Morrow, GH4169 650°C

(c) SWT, GH4169 650°C

(d) Modified Walker, GH4169 650°C