Fatigue and Fracture Mechanics
The account above is purely empirical and, though it allows life prediction and design assurance, life improvement or design optimisation can be enhanced using Fracture mechanics. It can be developed in four stages.
- Crack nucleation;
- Stage I crack-growth;
- Stage II crack-growth; and
- Ultimate ductile failure.
Read more about this topic: Fatigue (material)
Famous quotes containing the words fatigue and/or mechanics:
“I thank heaven that the 4th. of July is over. It is always a day of great fatigue to me, and of some embarrassments from improper intrusions and some from unintended exclusions.”
—Thomas Jefferson (1743–1826)
“It is only the impossible that is possible for God. He has given over the possible to the mechanics of matter and the autonomy of his creatures.”
—Simone Weil (1909–1943)