this post was submitted on 24 Jun 2024
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Science Memes

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top 25 comments
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[–] Kyrrrr@lemmynsfw.com 57 points 11 months ago

Ah yes the part of the curve where the stress permanently changes you. Yeah, accurate.

[–] elbowgrease@lemm.ee 39 points 11 months ago (1 children)

this assumes a ductile material. I myself am smiling as though everything is fine in the elastic region and may snap at any moment.

[–] marcos@lemmy.world 2 points 11 months ago (2 children)

What a fragile personality...

[–] elbowgrease@lemm.ee 9 points 11 months ago

brittle. brittle materials fail in the elastic portion of the stress strain diagram

[–] Ironfacebuster@lemmy.world 4 points 11 months ago

Found the titanium personality

[–] Rubisco@slrpnk.net 35 points 11 months ago (2 children)

Can a TI-84slinger explain this for us pipette-wielders?

[–] HootinNHollerin@lemmy.world 52 points 11 months 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.

[–] Rubisco@slrpnk.net 16 points 11 months ago (2 children)

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

[–] Dettweiler42@lemmy.world 36 points 11 months ago (2 children)

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

[–] Dave@lemmy.nz 6 points 11 months ago

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

[–] HootinNHollerin@lemmy.world 10 points 11 months 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@lemmy.world 21 points 11 months 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@lemmy.world 11 points 11 months ago

Proportional limit. Deformation is linear up until this point.

[–] Someonelol@lemmy.dbzer0.com 4 points 11 months ago

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

[–] Dettweiler42@lemmy.world 25 points 11 months ago

Everything past the dotted line is the point where the material won't go back to its original shape.
Example: You can push on the hood of your car all you want, it'll flex, and go back to its original shape (elastic deformation); but stand on it, and it'll dent (plastic deformation).

[–] FuglyDuck@lemmy.world 18 points 11 months ago* (last edited 11 months ago)

"have you tried modeling this with something more flexible?" -The Project Manager.

[–] Huschke@programming.dev 14 points 11 months ago

Manager "So all that you need is more strain to reduce the stress? Here are 10 more tasks which should strain you quite a bit"

[–] sga@lemmy.world 10 points 11 months ago

Have considered recrystallisation ~~therapy~~

[–] Aurenkin@sh.itjust.works 10 points 11 months ago (1 children)

The plastic zone is no joke, my friend.

[–] FuglyDuck@lemmy.world 1 points 11 months ago (1 children)

Is it sort of like the friend zone?

[–] Aurenkin@sh.itjust.works 2 points 11 months ago

Indeed, it leaves you forever deformed.

[–] fckreddit@lemmy.ml 6 points 11 months ago

The material is too ductile. I am at the peak of a narrow yield curve and then, snap, material breaks.

[–] captainlezbian@lemmy.world 3 points 11 months ago

Ouch yes, very true, but ouch

[–] corsicanguppy@lemmy.ca 3 points 11 months ago

Well, mom, maybe write like a 60-year-old and not a 14-year-old and I'll respond.