3 ms·
As I understand it, the gotcha with aluminum is: there is no such thing as non-fatiguing stress — whereas, say, steels, have a range of elasticity where it can
by AceyMan 2y ago
As I understand it, the gotcha with aluminum is: there is no such thing as non-fatiguing stress — whereas, say, steels, have a range of elasticity where it can operate and not lose strength (or get cold-work hardened).
With aluminum, any flexion — no matter how little — marginally reduces the strength of the material. Ergo, even under ideal conditions it's saddled with a limited service life.
- HPsquared 2y agoYou just design it so the stress in the material gives a very long fatigue life (as in, how many zeros do you want?). It doesn't have a defined "fatigue limit", but it may as well have.