Fatigue testing (Wöhler test)

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The fatigue test provides information about the strength of a material under permanent changing stress (dynamic load).

00:00 fatigue testing
01:15 test setup
02:36 fundamental terms
03:35 stress-cycle-curve
06:31 strength areas
08:10 influence of mean stress
09:51 fatigue limit and fatigue strength
12:03 fracture mechanism
13:58 fatigue striations and beach marks
14:59 fracture surfaces
15:51 influencing the fatigue strength
16:31 residual compressive stresses
17:52 sample size

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