Understanding Young's Modulus

Рет қаралды 738,794

Күн бұрын

Young's modulus is a crucial mechanical property in engineering, as it defines the stiffness of a material and tells us how much it will deform for an applied stress.
In this video I take a detailed look at Young's modulus, starting with tensile tests and stress-strain curves, all the way through to what is happening at the atomic scale.
---
ERRATA:
- At 05:27 steel is incorrectly shown as being a substitutional alloy. It is actually an interstitial alloy, where the carbon atoms are located between the iron atoms.
---
If you would like to support the channel, please consider becoming a Patron - / efficientengineer . This will allow me to create more high quality videos covering a range of engineering topics.
---
The Efficient Engineer is a channel aimed at mechanical and civil engineers. The mission is to simplify engineering concepts, one video at a time!
Follow me on Twitter: / efficiengineer

Пікірлер: 334

@MFDOOMgr 4 жыл бұрын

i have a question. I understand everything about Young's Modulus but, when they say a material has for example 210000 N/mm^2 , what do they mean? that it can handle 210000N/mm^2 in the elastic region? and then it goes to the plastic?

@TheEfficientEngineer 4 жыл бұрын

Young's modulus, yield strength (the stress at which a material goes plastic) and ultimate strength (the stress at which a material fractures) all have the same units. So it doesn't make sense to say "a material has 210000 N/mm^2", without specifying which parameter we are talking about. 210 GPa is a typical Young's modulus value for steel, so it is likely that in this case the 210000 N/mm^2 is Young's modulus.

@MFDOOMgr 4 жыл бұрын

@@TheEfficientEngineer and practically this means? that this kind of material can take up to 210000 N / mm^2 and then breaks?

@TheEfficientEngineer 4 жыл бұрын

No - it means that the slope of this material's stress-strain curve in the elastic region is equal to 210000 N/mm^2. So for example for an applied stress of 210 MPa, we would get a strain of 0.1%.

@whitelight32 4 жыл бұрын

@@TheEfficientEngineer Doesn't that also mean that we need 2.1 MN of force to change the materials area by 1 mm^2 ?

@gieaudio8762 4 жыл бұрын

@@whitelight32 no, it means that you need 210 GPa stress in material to deform it by 100%, of course it will fail because Young modulus is only appropriate (linear) in elastic range of the material. Simply saying, Young modulus is the number that helps you transform stresses to strains and vice versa but only in the elastic range of the material, for concrete it is 0,20% for compression, for reinforcing steel it is up to ~0.24% in tension

@kalki3060 3 жыл бұрын

This is a clear and comprehensible explanation. The sounds in this video are sooo pleasing and captions are perfectly timed. It is evident that you have really put an effort into making everything great. Thank you :)

@havenjoseph3728 4 жыл бұрын

just started A-level physics and im so happy I came across this because no one else explains it so well. thankyou

@lazytommy0 4 жыл бұрын

I feel ya dude. Its tough finding the right information presented in the proper way sometimes. Thats why alot of people struggle with math. Its overly complicated by improper presentation.

@souravkundu6874 2 жыл бұрын

It's been 2 years. How did your A level physics end up??

@tempestandacomputer6951 2 жыл бұрын

Is this meaning introductory physics in your country, or advanced?

@seungseungminji 7 ай бұрын

@@tempestandacomputer6951 It's for the A-levels, so junior and seniors (16-18 year olds).

@ajeynager8452 2 жыл бұрын

I get amazed at the wealth of information available to us now. It's fascinating how physics, one of the broadest subjects, is so widely accessible and easier to understand if explained by independent creators rather than by mainstream school teachers. Amazing video, btw!

@MrShaan1000 4 жыл бұрын

Everything is great about this video, the explanation is top-notch supported by equally great animations and designs. This is the first video I am seeing on your channel. Looking forward to watching other videos and understanding my concepts better.

@GeniusEngineering 5 жыл бұрын

Keep up the good work of explaining these material properties in such an interesting and understandable way.

@rikhilnell2623 4 жыл бұрын

MAN! People like you deserve more subscribers!! Keep up the good work👍

@ryanpfannenstiel7517 5 жыл бұрын

I wish I had these videos before solids and egineering experinentation courses. Incredibly well done. Ill be sure to lead other people your way when they are introduced to these concepts.

@ARBB1 4 жыл бұрын

Fantastic gem of a channel here.

@MANJU1ANANTH 3 жыл бұрын

Very useful and simple refresher. I had forgotten these stuff from my college days. I was doing some project with my driveway to eliminate lateral stress on a retaining wall thereby extending its life. I was stuck at a point. I could get the vertical stress figured out but horizontal is what mattered. This video refresher cleared everything and I am at completion of my project. Thank you for the educational videos.

@dimchohvarchilkov683 3 жыл бұрын

A short & comprehensive video which well explains the basics. Thanks!

@tomasenrique 7 ай бұрын

These series of videos NEVER GET OLD!! thanks!

@mozammelmia3714 3 жыл бұрын

Awesome. I am a doctoral student, and found your videos amazing. Super easy to understand, but extremely effective. Many thanks.

@ashishrai2098 4 жыл бұрын

the kind of youtube channel i was searching. thanks it has helped me in my physics course👍👍👍 u r the best

@hakandede8588 4 жыл бұрын

Amazing videos, helped me a lot. Keep doing these stuff :)

@richie50 3 жыл бұрын

Your videos are great. They help me so much. You should feel really proud of all the value u provide for people, at no cost to them!

@TheMightyThim 4 жыл бұрын

Beautiful video, straight to the point and easy to understand. Subbed :)

@muhammadhaseebmujtaba5960 3 жыл бұрын

Amazingly beautiful way of elaboration.my whole study of Youngs Modulus at one side and this at other side. Really great work👌. Keep it up

@manojnagsharma888 4 жыл бұрын

It is soo detailed!! Thank you upload more civil engineering related videos..

@ngqobilezikhali6871 3 жыл бұрын

Thank you for the wholesome technical explanation ,it makes comprehension easier in Mechanical Engineering studies

@isiTsotsi 3 жыл бұрын

Fantastic explanation. Short and on point!

@Shreyas_Sawant 4 жыл бұрын

Fantastic explanation! Waiting to watch more videos on Civil Engineering!!

@xxDeadlyMohawkx 4 жыл бұрын

This channel is amazing. Keep making videos!!!!

@appleitree 8 ай бұрын

Amazing explanation, that significance you mentioned is all the reason why this video deserves a like.

@user-gv1zo4tf2v 4 жыл бұрын

Very good explanation of material properties, hope we can see more video like this. thanks a lot~~

@salimkhoso7995 3 жыл бұрын

The best presentation ever made Thanks

@sriharshamukuri1598 4 жыл бұрын

Great explanation in each and every video .feeling very happy to listern every video...expecting even more videos like this ..

@emanuelnolasco3745 43 минут бұрын

Really interesting video!!! It is really awesome how this topic can be so simple to explain in a video of less than 7 minute instead when you are at university class normally takes 1.5 hours

@JP_916 3 жыл бұрын

hey, continue the videos. it helps me a lot. thank you!!!

@tanuthakur4161 5 жыл бұрын

It feels sad that you have very less subscribers. But I must say the way you explain concepts is awesomeeeee..... Looking for many more concepts from you ....

@sirigiri7091 4 жыл бұрын

Ya your right , sir your videos are really good , l like them a lot , we can understand easily and gain good practical knowledge .

@abdirahmanabdulbari6665 Жыл бұрын

Hello by now you must have graduated

@JC_Deutscher 4 жыл бұрын

excellent!! very illustrative and to the point. Thanks

@hemrajmeena4673 2 жыл бұрын

presented all aspects of youngs modulas with great clearity and graphics 👌👌👌

@BackyardBirdsofAustralia 2 жыл бұрын

These videos are great, thank you!!

@kvsalahuddin5 4 жыл бұрын

Channel is under rated ...i expected millions of subscribers ❤

@ymdh123 4 жыл бұрын

very useful videos, help a lot! Thanks!

@nesmaeysa364 4 жыл бұрын

very informative with simplicity

@davidsvarrer8942 2 жыл бұрын

Thanks a lot, for your very very good explanation of Youngs Modulus!

@zachydrogeo 3 жыл бұрын

This channel is the yardstick for engineering education

@rachelkimemia5897 4 жыл бұрын

Your slides are so good. The background, presentation,.....😃

@St-jh8pk 3 жыл бұрын

Thank you, so helpful and clear!

@FacultyDZ 4 жыл бұрын

Thank you for your job , and I'm wondering If I could take some images from this video to put it in my thesis , if you don't mind cane you send me the resources to put it in the reference Thank you again

@TheEfficientEngineer 4 жыл бұрын

Probably best if you send me an email to hello@efficientengineer.com with specifics.

@jakegray6987 3 жыл бұрын

Thank you so much bro I got an engineering final today this helped quite a bit as well as several of your other videos. You have for sure earned yourself a subscriber.

@TheEfficientEngineer 3 жыл бұрын

Awesome, good luck! :)

@jongeiser7569 5 жыл бұрын

This is a really great straight forward video. As a Metallurgist, this was a really good introduction. You explained it way better than my professors did. I don't wanna be that guy that tells you why your video is wrong. But around 5:30, you show that carbon replaces the iron atoms in your model. In reality, carbon goes in between the iron atoms in the interstitial space. This is hopefully a video that you could do in the future talking about until cells and Crystal structures. Keep up the good work!

@TheEfficientEngineer 5 жыл бұрын

Thank you for your kind comments Jon. You are of course correct about the interstitial nature of steel - my mistake. Hopefully the animation still illustrates the point without being too misleading. A video on unit cells would be really interesting - thanks for the idea!

@a1mforthetop 4 жыл бұрын

@pyropulse As an engineer with quite some work experience i must say the following: The stuff with the atoms is nice and everything but it should have been left out of a beginners introduction video entirely. The only thing that has to stick in the head of an efficient engineer is that E is a material constant that represents the slope of sigma and epsilon and is different for different materials. It is also commonly used in combinations like EI and EA. For the advanced theoretical engineer the atom part is important of course ;)

@nahfid2003 3 жыл бұрын

@@a1mforthetop I don't think so, I am a high school student and I get way more intuition if I understand how things work at the atomic level and then use the non-descriptive formulae.

@updatedotexe 3 жыл бұрын

@@nahfid2003 I agree! Atomic-Level-Explanations in Mechanics are the best!

@hridaysahoo3101 3 жыл бұрын

interstitial space means?

@allancng 4 жыл бұрын

Excellent. Greatings from Colombia!

@mohamadafiq5870 3 жыл бұрын

Superb content. Keep going!

@superpilun 5 жыл бұрын

Love the videos so far, excited to see where this goes.

@manuboker1 2 жыл бұрын

Wonderful Lectures ! Thanks.

@adelesmith7827 4 жыл бұрын

Thank you!!! Glad I found your channel, I have a design principle module at uni

@rachitmalya9521 3 жыл бұрын

Very well explained sir. Thank you.

@venkatseweyer4238 5 жыл бұрын

amazing content. keep it up

@mzakariya6574 3 жыл бұрын

I learned alot here. Thanks man!

@mathewyuka8181 3 жыл бұрын

Very precise and informative

@onkarchavan7253 4 жыл бұрын

Great going hope to have more vedio s in future

@Eyedaa_m 5 жыл бұрын

Very clear,thanks a lot!

@mishalconnect2996 2 жыл бұрын

Awesome explanation. Thanks

@lucascrupi5637 5 жыл бұрын

Amazing content keep it up. love the effort to quality in the videos

@bkraj26 4 жыл бұрын

Great Sir!!! Kudos!!! Please post more videos

@shripadnarale2150 4 жыл бұрын

Plzz upload such videos more in the future so we will build our cocepts in better and efficient way. Thanx.

@Vipul.Canada Жыл бұрын

wonderful presentation

@guitarman77084 4 жыл бұрын

keep up the great work. Looks like you're channel is very new but your presentation and video making skills are already on par or better than quite a lot of educational content here on KZfaq. I'm going to pass this on to my material science professors as they would be great for freshman engineering students.

@TheEfficientEngineer 4 жыл бұрын

Thank you, much appreciated!

@gholamalialmasi8906 3 жыл бұрын

Thank you for your information and knowledge to us

@te_b_24_ingleameyajay18 3 жыл бұрын

nicely explained, thank you

@bantothakur608 4 жыл бұрын

So good an explanation it was..... believe me your subscribers are gonna increase with the speed same as the speed of light......good luck.... and I'm a subscriber too......=)

@chaitanyadeshmukh8341 4 жыл бұрын

excellent work

@gopiacs2184 4 жыл бұрын

just wow man amazing content keep going upload more videos pls

@mohamedalhady-iitguwahati2068 9 ай бұрын

what a great video !

@mr.civilengineer6428 3 жыл бұрын

Please post more videos. Thank you for easily explanation

@asmaaabdulhamid2292 4 жыл бұрын

it was so helpful, thanks alote

@siddhaaarthsr 4 жыл бұрын

Thanks for the informative videos. If you don't mind me asking, which software do you use for animations?

@rushipatel7083 3 жыл бұрын

Thankyou so much❤ for amazing video

@washingtonalmeida75 10 ай бұрын

Wow, you sound more cheerful on this video! :-D As usual, great lessons...Thank you.

@zahidarafeeq4827 3 жыл бұрын

😭😭😭😭😭😭😭😭 TY..TYSM! U r an ultra pro legend! God bless u! Why don't u tutor our teachers as well..I don't get a single word in his lecture! I feel blessed to have u as my tutor...TYSM!

@GGGONEXT67 2 жыл бұрын

thank you! Very helpful

@jackeki7689 3 жыл бұрын

Thankyou Sir , love this ♥️🤝

@srinunaikbanavat8077 3 жыл бұрын

Well explained Sir.

@DC-wi9gm 4 жыл бұрын

extremely helpful

@yaseenwazir5844 4 жыл бұрын

Great job

@justimagine4785 4 жыл бұрын

Love u and ur channel ...

@elishane537 2 жыл бұрын

Great video

@NILESHGCEK 2 жыл бұрын

Now I will not forget anything about youngs modulus 👏👏

@KirillBelov92 4 жыл бұрын

Hello The Efficient Engineer! Thank you for your videos! They are great! I have one question. Why did you show on graphic on 2:38 that wood (pependicular to grain) is stiffer than wood (parallel to grain). I think it must be contrary because if load direction is parallel to grain than grains are tensed by all their length. But if load is pependicular to grains, so only part of grain and the space between grains are strained. Isn't the second case lesss stiff than the first one?

@eagleshorty9496 3 жыл бұрын

Wow nice one!

@govindaadalinge8759 Жыл бұрын

Super Videos...Keep it up bro...

@jawadnoor2298 2 жыл бұрын

I have Materials test tmrw thanks for the help

@aadharshram4975 3 жыл бұрын

Awesome video! Btw, just a question. So assuming that stiffness in polymeric material is caused by the intermolecular forces. So the stress-strain curve for polymeric materials flatter in higher stresses cause the molecules are farther apart and the intermolecular forces are weaker and less stress is required to pull the molecules apart. Is that right?

@mountainbiker9330 5 ай бұрын

Thanks for this.

@paulcarroll5602 Жыл бұрын

Just found your page tonight I find it interesting so far. I’m a dual ticket Red Seal Ironworker and Welder and I’ve performed tensile tests both in school and at work. What you covered is very informative but you could have added more about quenching and tempering and how much tensile strength it can add. How it increases brittleness and ductility. I had a weld test on mild steel with 7018 SMAW welding electrode(rated for 70000 psi per square inch) heated red hot and quenched immediately. It sheared at 138,000 psi on the tensile test which I found very interesting.

@paulcarroll5602 Жыл бұрын

I meant lowered ductility, sorry it’s 1am

@brankelly1921 3 жыл бұрын

thank youuuuuu thank you thank you thank you for making core physics fun and understandable. Liked and subscribed :)

@formationprofessionelle3879 4 жыл бұрын

great job

@rubayettanveer3479 4 жыл бұрын

Top class!

@muhammedlatifbekci7725 4 жыл бұрын

Thank you so much. This channel is perfect.

@boumezanouar 3 жыл бұрын

i just discovered you awesome channel ! i cant find the shear/bulk modulus thank you !

@user-kf5bc4dr6h 4 жыл бұрын

Thanks so much.

@feynstein1004 5 жыл бұрын

Great video. Wish it were a bit longer. I especially wanted to see a comparison of various materials, including graphene, which has the highest Young's modulus as far as we know.

@TheEfficientEngineer 5 жыл бұрын

Thanks Feynstein! Graphene would have been a good one to discuss. I'll try and mention it in a future video.

@feynstein1004 5 жыл бұрын

@The Efficient Engineer You're quite welcome. It seems like I'm an earlycomer to your channel, meaning I'll probably get to talk to you one and one and my feedback will actually matter. Just the way I like it :)

@metehankara8432 2 жыл бұрын

Great video :) I have a question. In your opinion, is the young's modulus more important than the bending resistance in parquets? or is there a difference between them ? thanks