I gotta have this post for future reference..
More proof that long periods of hanging may be beneficial? (p. 3)
Taken from post #37
“This is a really complicated topic, as someone with a background in engineering, I would say that hangers will definitely be experiencing fatigue (in the engineering sense and not necessarily the sense used on this board), and may or may not be experiencing creep, depending upon on the loading.
Clarification:
If you hang a hundred pounds and then-and-there your ligs totally fail (break or become detached), then you have exceeded their ultimate strength.
Creep refers to a phenomenon whereby your ligs move towards that same failure, but over a long, long time owing to a load well beneath the load that would cause failure almost immediately. Creep is the slow, continuous deformation, leading to failure, over a long period of time at a load substantially lower than that that would cause failure in the short term.
Fatigue is where a load is applied, then removed, then applied, then removed—you get the idea—and eventually the ligs “become fatigued” by the constant adjustment necessary.
Speaking now of non-biological systems that cannot repair themselves:
***Both phenomena lead eventually to total failure***
Hangers will definitely be experiencing fatigue because we do sets.
Hangers may be experiencing creep if the load—though not sufficient to cause total failure in the short term—is sufficient to cause continuous, slow deformation. I should think that the trick would be to cause creep but to know when to quit.. Before total failure.
Metallurgically speaking, most failures in the real world are owing to.. Fatigue.
D.”