This book investigates the fatigue mechanisms and crack initiation of Ni Al and Cu on a
small-scale in the Very High Cycle Fatigue regime by means of innovative fatigue
experimentation. A novel custom-built resonant fatigue setup showed that the sample resonant
frequency changes with increasing cycle number due to fatigue damage. Mechanisms such as slip
band formation have been observed. Cyclic hardening vacancy and oxidation formation may be
considered as early fatigue mechanisms.
