Fatigue limit
Maximum stress that will not cause fatigue failure
Fatigue limit
The fatigue limit, endurance limit is the stress level below which an infinite number of loading cycles can be applied to a material without causing fatigue failure. Some metals such as ferrous alloys and titanium alloys have a distinct limit, whereas others such as aluminium and copper do not and will eventually fail even from small stress amplitudes. Where materials do not have a distinct limit the term fatigue strength or endurance strength is used and is defined as the maximum value of completely reversed bending stress that a material can withstand for a specified number of cycles without a fatigue failure. For polymeric materials, the fatigue limit is also commonly known as the intrinsic strength.
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