In this video I discuss the mechanisms behind fracture, and how S-N curves can be used to predict the fatigue life of a component. Crocodile Dundee ‘icon’ dies, aged 90 Resident highlights ...

The S-N curve shows the performance of some uniaxial fiber-reinforced composite materials ... Compression testing shows a stress level decrease of about a factor of two for the same fatigue life.

The lower S-N curves show the difference in the behavior of this type of alloy and a carbon steel. The carbon steel shows a "fatigue limit" below which its fatigue life tends to infinity. An aluminum ...