Hysteresis and fatigue (Q1210209)

Engineering design and safety standards for estimating fatigue life are based in part on the Manson-Coffin relations between the width of stress- strain hysteresis loops and the number of loading cycles required to produce failure in test pieces. Experimental and theoretical results show that this relation can be extended into a simple phenomenological description of fatigue that directly links total hysteresis energy dissipation, the cumulation of material damage, and the average number of loading cycles leading to failure.