Screw Dislocations {Texas A&M: Intro to Materials}

Short video describing screw dislocations: definition, Burgers vector, stress fields.
Video lecture for Introduction to Materials Science & Engineering (MSEN 201/MEEN 222), Texas A&M University, College Station, TX.
engineering.tamu.edu/materials

[@abhinavgupta7930]

Love u man !! You saved me from getting terrible grades..Love from India!!

[@PMuXeA]

Wow, after years of confussion I finally can imagine it! Thank you so much for making it so understandable!

[@dhruvbhate]

Thank you! Everything else I have read about this concept makes it sound so much more complicated than it really is --- which I know now after watching your video! :-)

[@ineslopez9910]

I can't believe how much you've helped me, thank you sooooo much. Greetings from Argentina 💖

[@krishnananda59]

Great lecturer difficult to find someone so eager educate.itwas a great help.

[@jesusemilianogarciabautist3634]

Thank you
Your explaination was very simple to understand, most of my teachers of university (I think) cant explain this well as you.

[@danielvega3218]

Thank you so much Professor!!! Your videos have helped me out a lot.

[@moseschishimba3784]

Twa totela ba tutor ..coz I was failing to understand screw dislocation and then again you can to make it easy

[@naziajasmeen4203]

SUCH AN EDUCATIVE VIDEO
THANK YOU SO MUCH SIR!

[@sureshsrinivasan7048]

Thank for posting this . i got a great understanding

[@dineshrathore2359]

Thanks for so nice demonstration professor.

[@belaynehoka7033]

what a scientist you are! thank you very much

[@kiranpadiyar9224]

Sir you have my Deep Gratitude...!thanku very much..!

[@alexminich]

Thank you for producing this series of videos, they're very helpful. One question though - how do you determine where the start point should be and how many steps to take? 3:10 Does the loop need to be centered on the dislocation line? If you were to start one unit cell lower with only a single stepover then you'd pass over the dislocation plane and the S-F points and the resulting Burgers vector would be on a plane that's orthogonal to the dislocation line, not parallel.

[@rajatshanu64]

thnx sir very much it's better for me to study this in ebook watch your videos it's clear all things

[@chiragalreja2016]

This is really good thanks.

[@dr.jayantthakare8707]

Dr.Patrick Shamberger your videos are of great use , i would be kind if you could clear a doubt...
which is a faster mode of deformation , deformation by screw dislocation or by edge dislocation.
and how do we come to know the deformation is because of which kind of dislocation movement.????

[@MisterBinx]

My book is not very good at explaining this. I had to reread it a lot. Thanks for the explanation.

[@ronakhariya8404]

explained neatly sir. Thank you sir

[@hsoley]

you are the man!

[@RishiKumar-ii8tu]

very much helpful sir keep on uploading videos

[@mehrdadzamzamian2237]

very helpful, thanks

[@godfreygao1972]

Screw dislocation is like the stair system in the building, this might make screw dislocation more easily to understand.

[@moldirraiymbek1877]

Thank you soooo much!!!!!

[@radiamariummodhumikhan203]

Damn!! I want him as my Professor.

[@meetvaghela3909]

thnx its easy is in reality than i expexted after reading in book...

[@melvindebosscher826]

6:21 me every time i try to draw something

[@titobarina6663]

Great video. I'm reading the Callister book and found his writing in this section extremely difficult to follow.

[@brianchuyt]

2020 gang

[@farid3361]

thank you so much

[@35tareenayadav97]

i wanna save this for future when i will do teaching😍😍

[@harshsah3738]

thank alot

[@harshsah3738]

thanks alot

[@mostafaamirjani8330]

Thanks for your lecture. I think notion of "Screw" should be explained more precisely also the direction of burgers and dislocation line needs rechecking, I understood they are perpendicular to each other.

[@pjshamberger]

burgers vector and the vector along the dislocation are perpendicular to each other for edge dislocations, and parallel to each other for screw dislocations

[@Rohit-mi8ug]

Epico.

[@kokikawtar3227]

plz how we can control dislocations ?

[@pjshamberger]

A number of different ways. for example, cold working a material will increase dislocation densities, while annealing a material will decrease dislocation densities.

[@chandrasekarsivakumar6632]

Sir, Pls give subtitle