Fatigue limit

The fatigue limit, also known as the endurance limit, is the maximum stress amplitude that a material can withstand for an infinite number of loading cycles without failing due to fatigue. Essentially, it is a threshold below which a material can endure repeated loading and unloading without experiencing fatigue failure. In materials testing, particularly with metals, the fatigue limit is determined by conducting a series of experiments where a sample is subjected to cyclic loading. Typically, this is done using rotating bending or axial loading tests.