ABSTRACT
As stated earlier, it is of interest to point out that many structural components are subjected to beyond 107 cycles. Normally the materials characterization and the fatigue prediction are carried out from data limited to between 106 and 107 cycles. The fatigue life requirement of a car engine is around 108 cycles. The big diesel engines for ships or highspeed trains work up to 109 cycles. An extreme example for the technical limit of fatigue life is about 1010 cycles for turbine engines.
