MM504 Lecture 31: Creep-Fatigue crack

Creep-fatigue crack behavior refers to the phenomenon where a material under cyclic loading and elevated temperature experiences damage and cracking. Creep is a time-dependent deformation of a material under a constant load, and fatigue is the weakening of a material due to cyclic loading. The combination of creep and fatigue can lead to the formation and growth of cracks, which can significantly reduce the integrity and lifespan of a material. Understanding the creep-fatigue crack behavior is essential in designing and maintaining high-temperature components in industries such as aerospace, power generation, and chemical processing. Various testing techniques and models have been developed to predict and mitigate creep-fatigue crack behavior.