Thread 22968996

Can material fatigue occur during elastic deformation of a ductile material?

i will elastically deform your ductile material

yeah i do that all the time

>>22968996 (OP)
If stresses remain below the yield strength then the deformation is completely reversible. If it's above, fatigue can happen.

>>22969007
This wasn't supposed to be a horny thread.

>>22969025
So in other words, as long as the stresses on the system remains below the yield stress I can perform an infinite number of cycles on the system without worrying about crack formation or anything?
>>22969069
At the end you will be harder and stronger. (You are being cold worked I think)

>>22969125
Theoretically, yes! ...but in reality, not always, because materials are not uniformly elastic at all parts of their structure. Usually when you engineer something for infinite cycles you aim for median stresses being way below the yield strength, and that helps you achieve "near-infinite" cycles, but never fully infinite...

>>22969161
I just want him to go back to normal. Who do I make checks payable to?

>>22969161
no pls
am ceramic
dont do this

>>22968996 (OP)
yes.
do I get points for this?

Fatigue is not about permanent deformation per cycle but about damage accumulation over many cycles, even if each cycle is within the elastic range.