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Fatigue
Fatigue is a core engineering term. Definition, usage notes, and a practical example.
Definition
Fatigue is crack initiation and growth under repeated loads.
Why it matters
Parts that are safe statically can still fail under cyclic loading.
How it is used
In a design check, first define the relevant load, dimension, material, or flow condition. Then interpret this term by its role in the formula and compare it with limits.
Example
Alternating bending stress in a rotating shaft requires fatigue review.
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Formulas
No formulas added for this term.