You are one of the best Gurus of Materials Science Sir. Thanks a lot. Very clear in explanation
@becauseitrustyou85682 жыл бұрын
Thank you very much. So well explained, so helpful! I understand the strain hardening process better.
@deeptikumarroy86303 жыл бұрын
So perfectly explained! Thank you professor!!!
@sambu274 жыл бұрын
Thank you sir, nice explanation on strain hardening
@thelonecabbage78344 жыл бұрын
We were studying stress/strain curves in class when asked what the graph would look like if you stopped the test mid-way, then retested it. My professor was on a tangent about the effects of strain on ladders, and said "I don't know, I don't test my ladders every time I use them", and dodged the question. THIS was the answer I was looking for. Thank you so much for being a competent educator.
@ragpaysever22602 жыл бұрын
Sir, thank you Sir. Very good Sir.
@AmaniElFathan4 жыл бұрын
thank you very much sir...
@samadvaliloo26575 жыл бұрын
how about the final failure strength? is it different in comparison with one time loaded sample?
@milkteat.v26283 жыл бұрын
Question: Explain the process of applying Strain Hardening on a metal used for Aircraft structures. Help me with my essay sir.
@cyborg50403 жыл бұрын
Strain hardening is one of the most commonly used means of adding strength to an alloy. It is simply the use of permanent deformation to increase the strength of the metal. Other names for strain hardening are cold work and work hardening. No discussion of strain hardening would be complete without mention of the term “temper”. Temper is a description of the amount and type of processing done to a material at the mill, including cold work and thermal treatments.
@likithkumar70733 жыл бұрын
Thank you sir
@adityarathore70213 жыл бұрын
Hello sir! what will be the effect on Sigma UTS in strain hardening?
@introductiontomaterialsscience3 жыл бұрын
UTS also increases due to strain hardening.
@threads254 жыл бұрын
Excellent 😊 explained
@bhukya183 жыл бұрын
awesome...nice explanation.
@titaniumdiveknife4 жыл бұрын
Freehand diagrams, very comforting. Even family like.
@amankumar-sx2vh5 жыл бұрын
What about proportional limit and elastic limit during reloading.
@rajaejaz9695 жыл бұрын
Thanks for this Video
@RANDOMVACAYTIONVIDS3 жыл бұрын
Does the UTS also affected due to work hardening/strain hardening???
@sandeeprathee98594 жыл бұрын
Teaching method is awesome
@bhaumikupadhyay49555 жыл бұрын
sir, what is "compliance of UTM machine"???
@vikasbite84543 жыл бұрын
Nice lecture
@MANISHKUMAR-be3wb6 жыл бұрын
Respected Sir, What is strain hardening coefficient?
@rajeshprasad1016 жыл бұрын
The stress and strain can be related by true stress=constant*(true strain)^n. In this case n is called the strain hardening exponent.
@hemachandra26806 жыл бұрын
it is the slope of line when we draw a graph between log(true stress) to log(true strain)
@jvikash883 жыл бұрын
Sir, What’s Strain Aging?
@teja85755 жыл бұрын
what is the area of cross-section taken after deforming curve (second curve), like initial area or area after deformation in stress calculation
@introductiontomaterialsscience5 жыл бұрын
For true stress you take the instantaneous area but for engineering stress you take the initial area.
@rakeshnaidu49534 жыл бұрын
Where do we see practical application of strain hardening, ex in automobiles
@introductiontomaterialsscience4 жыл бұрын
Car body is an example. Thin steel sheets, if not strain hardened, will be too weak for the purpose.
@rakeshnaidu49534 жыл бұрын
@@introductiontomaterialsscience Thanks
@1005rudra5 жыл бұрын
Sir, how the complete stress-strain curve will be i.e. up to fracture point for both the cases. I feel the UTS is not going to change in normal case and strain hardened case. So what about the toughness, Are we going to loose some amount of toughness in strain hardened case? please explain.
@introductiontomaterialsscience5 жыл бұрын
Ductility, as measured by strain to fracture, decreases upon strain hardening. Thus the toughness, that is area under the curve, also decreases despite the increase in yield stress.
@asseilalhlafi1283 жыл бұрын
thanks
@raghavbansal91103 жыл бұрын
What I wrote in my 4th sem exam was- when various testing is done on a specimen the strain of the specimen increases and is known as strain hardening Le teacher- 0 marks awarded
@siddharthvikram74786 жыл бұрын
Respected sir, I have a query up till now we studied that till uniform elongation the load increases because of strength hardening and the reason being the dislocations so as told by you if a material is loaded and unloaded then strain hardening will occur so will it not occur in case of an undeformed material which is loaded for the first time....
@travellwithmahesh91886 жыл бұрын
good job
@rajeshprasad1016 жыл бұрын
Unloading and reloading is done to highlight the strain hardening. But unloading is not necessary. The very fact that stress needs to be increased beyond yield stress for further increase in strain is itself an indication of strain hardening. A material with no strain hardening (called an ideal plastic material) will continue to to deform with increasing strain at the yield stress itself.
@rajnishmishra35614 жыл бұрын
You are god 🙏
@vinayakkrishnaprasad3582 жыл бұрын
genius
@ibrahimyldrm24275 жыл бұрын
kral
@savagedeuterium3744 жыл бұрын
With all due respect Sir, you are good but you must increase speed otherwise people will be bored.
@introductiontomaterialsscience4 жыл бұрын
Thanks for your suggestions. many others have also expressed similar view. This was my first attempt at online teaching. If I ever make another series of video I will increase the pace.
@savagedeuterium3744 жыл бұрын
@@introductiontomaterialsscience Dear Sir, I have some doubts in mechanics how can I ask them.
@introductiontomaterialsscience4 жыл бұрын
@@savagedeuterium374 Why don't you look at some mechanics course. I am not knowledgeable in mechanics.
@riveshraj27594 жыл бұрын
@@introductiontomaterialsscience no sir u are perfect, teach asu feel comfort, it is understandable . And who want to high speed can use the you tube tool i.e × 1.25 or ×1.5 speed . Sir please elaborate on change of property with adding carbon ,sulpur , phosphorus in steel and other . Thank you
@Brijwasiichaudhary3 жыл бұрын
Sir if u might speak in bilingual english nd hindi...more students will get advantage of ur knowledge....and thanks to you
@ab_c44295 жыл бұрын
This helped a lot. The book I have to study often ignores explaining these mechanics but instead focuses more on the effects only. Thank you for this video.
@k.rajashekarreddy95694 жыл бұрын
May be because you are reading a textbook designed for civil / mechanical engineering.
@youboy95863 жыл бұрын
@@k.rajashekarreddy9569 so which Book should I study to get these explanations.
@k.rajashekarreddy95693 жыл бұрын
@@youboy9586 Material science
@youboy95863 жыл бұрын
@@k.rajashekarreddy9569 would you refer any book name
@MVBSYEDMOHDHAMZA3 жыл бұрын
@@youboy9586 book name is Calister
@vedantbarot39545 жыл бұрын
Thank you sir
@KailashKumar-kr7pc4 жыл бұрын
Thank you so much sir. For providing us quality education.
@Things2Learn27 күн бұрын
Very well explained.
@harishmalladihalli45886 жыл бұрын
Thank you very much sir this helped me a lot.
@mrinalkantidutta67573 жыл бұрын
Thank you sir
@mareksumguy18875 жыл бұрын
Shouldn't it be called "strain strengthening"... instead of "hardening"??
@introductiontomaterialsscience5 жыл бұрын
I agree with you. Strengthening appears to be more appropriate. But hardening has become quite common in actual usage.
@MozhdehTavakoli-p9c8 ай бұрын
I couldn't understand any thing because of accent , Indian ACCENT Is really hard and completely a new Language.
@bestcakesdesign2 жыл бұрын
I love the way of teaching.
@baderalihamad88135 жыл бұрын
Thanks for this Video
@srisurya592 жыл бұрын
Lovely explanation Dr. Eye opener indeed ...thank you so much Dr
@EddieVBlueIsland4 жыл бұрын
What if during straining the metal in a tensile tests you took a hardness tests perpendicular to the pull axis - Would the hardness measurement be less, equal or greater than the hardness of the virgin metal?
@simonblue564 жыл бұрын
Thank you so much. Excellent explanation which really helps me to figure out the pictures!
@illi223 жыл бұрын
Thanks! easy to understand!
@pranavpatil75614 жыл бұрын
Thanks for the video
@aadarshkumar58393 жыл бұрын
You are great sir 🙏
@ramanjaneyulupeddineni81954 жыл бұрын
One of worst GATE question paper given by iit-Delhi
@rajeshprasad1014 жыл бұрын
Sorry, but I was not involved in setting it!
@mohitpatidar78825 жыл бұрын
1. Generally, more the number of slip system more will be ductility.Therefore, HCP is brittle. 2. More the number of slip systems, more will be the interaction between dislocations, more will be Strain hardening. So, HCP will undergoes least strain hardening means it should have high ductility. Points 1 and 2 are contradictory, kindly solve it.
@samrattamuly81575 жыл бұрын
Active slip planes in hcp is lesser
@अण्वायुवरीवर्त5 жыл бұрын
Does not talk about stages involved in work hardening So skip this video if that's what u r looking for