Tensile Test

Basic principle and practical procedure of the tensile test on ductile metallic materials
- Testing machine (Inspekt 200 kN, Hegewald & Peschke Meß- und Prüftechnik GmbH), specimen, extensometer
- Material with yield point phenomenon
- Elastic and plastic behaviour, uniform elongation, necking, fracture
- Yield strength, tensile strength, percentage elongation at fracture
- Material without yield point phenomenon
- Plastic behaviour, proof strength
Responsible for this video: Prof. Dr.-Ing. Rainer Schwab, Hochschule Karlsruhe (Karlsruhe University of Applied Sciences), Germany

[@abdelrahmanhazemmohamedkam5781]

It''s very interesting to see how things work practically instead of just reading it from books.

[@randomeditz2484]

Exactly

[@Facund1tt0]

Totally agree.

[@vinoduikey45]

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[@emkox7765]

No idea why this was in my recommendations, but I watched it and it was interesting. Props for Anneke Reinsperger for speaking English without even the hint of a German accent.

[@dimassilva6822]

Very clear speaking.

[@giovannipelissero1886]

I searched it to see with my eyes what I was studying (for an exam about polymers)

[@maclinacarvalho8151]

This proved to be very helpful in my engineering practical exams . 🙏🏻

[@jessiezhao8742]

I dont work in material science just needed to learn something for work so I landed on your video. Not only the content of the video is informative but I also find how the entire process is explained is very neat! Thank you for sharing!

[@lucarutigliano6539]

I'm studying for the metallurgy exam at university and this video helps a lot to visualize and really understand how the complete process works.

[@rickclassico5359]

Grande bro

[@thenozar7603]

Never quite understood why we always had two different graphs but thanks to this video it's very clear. Great stuff

[@arbabraiyan8200]

The best video I ever saw on this, keep it up! thank you for showing the curve as the test proceeds..

[@sebastiancrawford4148]

this is the best video on tensile testing and strain on KZbin

[@ManufacturingET]

Finally some really good videos on materials testing. Thanks!!

[@danieltscharner4898]

thank you so much for this video, while my professor has excellent knowledge we learn little so these videos are a lifesaver.

[@user-rr7vq4xk1b]

This video is really well made, thank you for making it. Finally some really good videos on materials testing. Thanks!!.

[@alirio4768]

This is an insteresting and informative video. I'm a Mechanical Engineering and this information clarifies some concepts.

[@paocornejo4821]

Congratulations for your work, this is very helpful for beginners/students and experts. :)

[@ShelbyPBowen]

Very neat! We just went over these concepts in Solid Mechanics.

[@bluustreak6578]

Very informative without any fuzz!

[@gianlucacastro5281]

This video is really well made, thank you for making it

[@jacobkane9984]

Very informative and very proffesional. Thank you

[@stephaniefields7971]

I’m in 6th grade and this was the first advanced thing I’ve learned like this so thx

[@Zaur525]

More information about yield phenomenon, please. That was very interesting, informative and helpful

[@dimassilva6822]

Best Tensile Test video in internet.

[@osvaldosolis7605]

This essay is great because it exemplifies that not all materials work in the same way.

[@RightInstrumentCoLtd]

What happy as same the company in your industry, I am a China company, good video!

[@MaterialsScience2000]

In materials of medium or low ductility, the fracture may take place anywhere along the prismatic part of the specimen, mostly at a weak point. In very ductile materials, the fracture tends to form in the middle region, because there is a certain influence of the grip regions.

[@mr.ranaji2027]

Too much helpfull practical knowledge

[@mechapylon7171]

amazing vid, love it! thanks!

[@trik3002]

Now thats what u call, THE BEST..!!

[@momenterkesan4098]

Thanks for your video, it was helped me to finish my final project

[@alvarparedes]

Great video, Thank you.

[@abhishekkumarjaiswal7397]

This video is very informative and has good explanation. Thank you

[@sudhansugrahacharya7094]

nice video.this video is much more suitable for professionals than students. this is widely used in industries. well we had this experiment done during my engg time.

[@AboutComposites]

very important test, thanks guys!

[@cytyoisbills8197]

Very helpful, Thanks!

[@tusharbhagat27]

Good presentation as well as explanation.

[@juaki_jean]

Thank you for posting, it was useful.

[@anandlakhani6935]

This video is very helpful. Thank You.

[@georgesimon1322]

It is really interesting. Good presentation.

[@MaterialsScience2000]

Mechanical stress sigma is always defined as Force F divided by cross sectional area S (or area A). Or more precise: NOMINAL stress sigma equals force F divided by ORIGINAL cross sectional area S zero. In the video TWO physical quantities are plotted on the vertical axis: Force F on the right side and stress sigma on the left side. Sorry for this, it may be confusing. You get sigma on the left side by simply taking F and dividing it by the original cross sectional area S zero.

[@snehmittal2109]

Thankyou for uploading this. It was really helpful 🙏

[@MaterialsScience2000]

The term "elongation" in ASTM 615 indeed is not specified clearly. To my knowledge it can only mean "percentage elongation after fracture". So one has to put the fragments together and then determine the percentage plastic deformation after fracture has occurred.

[@ryanwarren7600]

Great video!

[@RAHULKUMAR-pk1rt]

Gajab nice work 🤗🤗❣️

[@user-hndle]

좋은 동영상 감사합니다🙂

[@digiconvalley]

Thanks alot ! Perfecttt!

[@khouloudejbari7873]

thank you so much ,your voice is great ; peace from morocco

[@hugoorellan1029]

It is interesting to see how steel can deform under load applications in a test. Thank you for made it

[@oyasumidoge]

Amazing video helped me a lot with my project.

[@Anikung17]

I'm not even sure how i ended up here but this is fascinating

[@user-cg7jy4su6k]

Thank you very much for your help

[@damandeepsingh8542]

Very good. The video is brilliant

[@muhamanaf]

Thank you. It really helps me a lot for preparing my exam

[@MahmudulHasan-hi1bv]

Very much informative thanks a lot !!!

[@siraj2835]

wow!! thx guys. now i got the practical knowledge from your video.

[@MaterialsScience2000]

"what would be if we take off tension on the middle of experiment for example on 18mm elongation. and apply it again?" Then an elastic spring-back parallel to the elastic straight line would take place, not to the original length, but to the plastically strained length of about 17.8 mm. On reloading, after elastic behaviour the original curve will be resumed, as if nothing had happened.

[@vinayarya1384]

Amazing experience.

[@anzebeton1869]

I'm a sample machinist for the local steel mill and this is exactly what I machine every day.

[@beremolina264]

It is a good video, it explains the procedure very well.

[@conceptsofcivilengineering]

Excellent explanation

[@abduljabbarm4804]

AMAZING EXPLANATION

[@yahiaroukaibi4044]

Thank you so much for this video and for your explanation

[@MaterialsScience2000]

"If this rod was a hollow tube or pipe how would the inner diameter be effected? Am I to assume that the point at which it would neck the inner diameter would increase roughly as much as the outer diameter decreases?" We do not have much experience on tensile tests of tubes, but as far as I know, the inner diameter at the neck will decrease, and the outer diameter as well, a bit more than the inner one. So from the side, the broken tube looks similar to the massive cylindrical specimen.

[@embrezar]

This was highly informative, thank you.

[@aliceoriani6546]

onion

[@sunnywang5463]

Cool machine!

[@ahmedsobea]

It’s a very helpful video. Thanks alot

[@nkdandekar]

Excellent! Thank you !!

[@aliceoriani6546]

onion

[@ameetsharrma9632]

Explained in a simple way

[@corentinisoard6192]

wonderfull thanks Angela

[@zach7147]

This is extremely fascinating. I'm super motivated to finish my remaining education. Working two full time jobs for school has been very tiresome.

[@blahbleh5671]

well done *claps*

[@philipranjit4586]

how old were u a year ago

[@pan4909]

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[@philipranjit4586]

@@pan4909 wow i was a massive dick a year ago

[@pan4909]

@@philipranjit4586 lol 1 year ago m8

[@tedroskiros1258]

very interesting lesson ...

[@ronaldoandraderibeiro1301]

Very well explained

[@vishwassharma]

Great Video :)

[@skoopysallu]

Thank you very very much.

[@jasonlai445]

Good explanation

[@Jeff23301]

my mind just exploded. This is gonna be a fun semester

[@aliceoriani6546]

cipolla

[@FGX4000]

Cool. I like videos like this.

[@MaterialsScience2000]

"Why does the machine not apply any additional force in the 'luda' (Lüder) area of the curve?": This is an important question, and a research topic of mine, please see our publ. "On the nature of the yield point phenomenon" in Acta Materialia. "And why does the machine apply less and less force right before final fracture?" This is due to "material instability": Here the strain hardening effect is not strong enough to compensate the strength decrease due to the decrease in cross sectional area.

[@Fallenangel-si4bd]

what can you conclude about the yield strength of the two specimen tested here?

[@bhavikpatel7717]

thank you..very much

[@SorryCrane16]

Amazing

[@ferozahmedkhan1058]

Nice! Very helpful.

[@abdulazizelahmed7212]

(Explain the concepts used in the tensile test on the tensile diagram of st 37 steel) Can someone help me with this question please?

[@vishnugupta2050]

very good article

[@SalveMonesvol]

Thank you.

[@keithmatambo876]

Thank you for this

[@M.t_khans_Electronics.]

Nice informative

[@OneManForger]

Question just to clarify, I had previously understood that a stress vs. strain graph, the stress was the Force DIVIDED BY THE AREA, which here seems to be the yield points... Is stress just the force measure or are these two different graphing methods?

[@Virtueman1]

This is very well done, it helped my studies.

[@aliceoriani6546]

ma va a cagare

[@robertgardner7470]

Was millileter the force used or was it milipascals? On the second sample of Al did not show the yield strength. I would like to see 7068 (tennalum) test at 99,000 ksi tensil.

[@Beverly_Life_Style]

Useful!

[@TheRoKitMan08]

Amazing name, inspekt 200

[@keithc8133]

It would be valuable to add to the charpy energy testing video to include %shear area determination and may be include a drop weight testing video with %shear area determination.

[@bridgetdavenport6057]

Love this process. Crazy how edge and screw dislocations travel in the material. To imagine metal of that thickness being able to do necking and break is so cool. Interesting how material goes from elastic deformation to plastic deformation. It was nice being able to see when the yield point occured on the monitor. What was you factor of safety percentage?

[@MaterialsScience2000]

Answer to "What was you factor of safety percentage?" There is no concept of "safety factor" in the tensile test itself. You need safety factors when you use the results of the tensile test to design a mechanically loaded component.

[@Rikzy_official]

Hello friends!!! Very good video Big Laik from me.

[@aliceoriani6546]

onion

[@sinostone2457]

It is very useful to know the material

[@MaterialsScience2000]

Answer to "It is very useful to know the material": Quite correct, the steel is a typical plain low-carbon structural steel, type S235JR. The aluminium alloy is a 2014 precipitation hardened alloy with about 4 % Cu and some small additions of Si and Mg.

[@MaterialsScience2000]

Thank you for your interest. We are sorry to state, that there is no Spanish text available, and we would not like to hand out the English or German text.

[@KhalidGohar]

very helpful

[@chandraprakash934]

very nice ,,, thnk u :)

[@DavidPrasanna]

very useful thx

[@baraamaroufalsayed7112]

thank you

[@angrydragonslayer]

oh boy do i love hearing metric again

[@manavbhatia777]

Perfectionism

[@Prabatha89]

Thank you.

[@laavsworld9817]

Hi,thx for the video,we are a die casting company,we want to change our micro structure to increase our tensile strength from 300 to say 400,can u tell us what we have to add to A356 aluminium to get increased tensile strength