Open Access
Table 8
Values of FGM fatigue parameters.
| Fatigue parameter | Homogeneous material criterion | FGM |
|---|---|---|
| Fatigue strength coefficient σ′f |
|
1402.5 |
| Fatigue strength index b | −0.087 | −0.087 |
Fatigue ductility coefficient 
|
0.59α | 0.4195 |
| Fatigue ductility index c | −0.58 | −0.58 |
| Cyclic strain hardening coefficient K′ |
|
1,542.75 |
| Cyclic strain hardening index n′ | 0.15 | 0.15 |
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