Väsymislujuutta
Väsymislujuutta, also known as fatigue strength or endurance limit in English, refers to the stress level below which a material can withstand repeated cyclic loading indefinitely without failing. This phenomenon is crucial in engineering design, especially for components subjected to dynamic or oscillating forces. Unlike tensile strength, which measures resistance to a single pulling force, fatigue strength addresses the cumulative damage caused by repeated stress cycles.
When a material is subjected to cyclic loading, even if the maximum stress is below its yield
Factors such as the material's composition, microstructure, surface finish, and the presence of defects significantly influence