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Fatigue criteria for different materials

Fatigue criteria for different materials

Fatigue criteria for different materials

(OP)
Hi,

Are certain fatigue criteria more relevant for certain type of materials? I heard that Gerber is good for ductile materials, etc. So can we use criterion based on material? Any particular reference on this?

Thank you
Geoff

RE: Fatigue criteria for different materials

> The following information are valid for high-cycle fatigue (S-N method):

For steels and metals in general, the best fatigue criteria are classified in this sequence:

1) Walker model
2) Morrow model
3) SWT model (Smith–Watson–Topper model)

For Aluminium and titanium alloys, the best fatigue criteria are classified in this sequence:

1) Walker model
2) SWT model
3) Morrow model

Source: http://www.ewp.rpi.edu/hartford/~ernesto/F2011/EP/...

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