this post was submitted on 24 Jun 2024
342 points (98.6% liked)

Science Memes

9131 readers
4335 users here now

Welcome to c/science_memes @ Mander.xyz!

A place for majestic STEMLORD peacocking, as well as memes about the realities of working in a lab.

Rules

  1. Don't throw mud. Behave like an intellectual and remember the human.
  2. Keep it rooted (on topic).
  3. No spam.
  4. Infographics welcome, get schooled.

Sister Communities

Science and Research

Biology and Life Sciences

Physical Sciences

Humanities and Social Sciences

Practical and Applied Sciences

Memes

Miscellaneous

founded 1 year ago
MODERATORS
[email protected]
[email protected]
[email protected]
342
No going back (lemmy.world)
submitted 4 days ago by HootinNHollerin to c/[email protected]
28 comments fedilink hide all child comments
 
you are viewing a single comment's thread
view the rest of the comments
[–] HootinNHollerin 51 points 4 days ago (2 children)

Past the elastic deformation region / yield stress you get plastic deformation, which even when the stress is completely removed there is permanent deformation.

[–] [email protected] 15 points 4 days ago (2 children)

Gotcha. Thanks! Do the points P, E, Y, U, and F stand for something or are the letters arbitrary?

[–] Dettweiler42 35 points 4 days ago (2 children)

Plastic deformation point, elastic deformation point, yield point, ultimate strength, and failure point

[–] [email protected] 6 points 4 days ago

And here I was thinking it was: F U, yep.

[–] HootinNHollerin 9 points 4 days ago (2 children)

E is where it stops being linear, Y is yield, U is ultimate as in max, and f is fracture / failure. Not sure about p.

[–] LeftRedditOnJul1 20 points 4 days ago

P is the Proportional Limit, where it stops being linear, but remains elastic for a short while longer, meaning any deformation can still be recovered. E is the Elastic Limit, where it changes from elastic to plastic

[–] andrewth09 11 points 4 days ago

Proportional limit. Deformation is linear up until this point.

[–] [email protected] 4 points 4 days ago

Looks like the plastic deformation point was placed before the elastic point.