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Fatigue Failure (Common causes borrar (Mechanical factors (Presence of…
Fatigue Failure
Common causes 
Metallurgical factors
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Mechanical factors
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Loads such as impacts, vibrations, unbalanced, etc.
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Environmental factors
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Theory
Wöhler
1) The forces necessary to cause breakage with dynamic loads are much lower than those necessary in the static case
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Griffith
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Fracture Toughness
Fracture toughness describes the ability of a material containing a crack to resist fracture. :check:.
The S-N Curve
They are determined by simulation tests in laboratories using a rotating bending test machine. They are commonly performed using unixial tension-compression load cycles
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What is fatigue failure?
Material fatigue refers to a phenomenon whereby the breakage of materials under dynamic cyclic loads occurs more easily than with static loads.