1. Define fatigue. 2. What is the most complex case of fatigue analysis? 3. What is the most dangerous characteristic of

[answerhappygod]

1. Define fatigue.
2. What is the most complex case of fatigue analysis?
3. What is the most dangerous characteristic of fatigue
failure?
4. Why does crystal deformation occur under fatigue loads?

5. How are the so-called “beach lines” produced?
6. Is it true that for metals the influence of the speed of
variation of the tensions is neglected?
7. What is the purpose of fatigue tests?
8. What parameters does the S-N curve in metals depend on?
9. What is the assumption that governs the S-N curve according
to the ASTM?
10. How do you get the stress-strain cycles at the crack
edge?
Write the answers with the keyboard to be able to
translate them, thanks.