Fatigue Test

Рет қаралды 446,840

MaterialsScience2000

9 жыл бұрын

Fatigue Test
- Problem and practical relevance
- Specimen preparation
- Test procedure
- S-N curve
- Practice
Responsible for this video: Prof. Dr.-Ing. Rainer Schwab, Hochschule Karlsruhe - University of Applied Sciences, Karlsruhe, Germany

Пікірлер: 200

@MrChangCJ 6 жыл бұрын

love seeing real life examples and actual testing instead of just theory and formulae in the text book! Thank you!

@cale31032008 Жыл бұрын

Yo también.

@mertyigit4093 2 жыл бұрын

the most explanatory video I have ever watched about fatigue, at least in basics! Thank you

@Felipe-53 5 жыл бұрын

What an awesome job we see here. Thank you very much indeed, I'm sure this video is impacting a lot of students like me. The world surely needs educators like you guys. Thanks a lot.

@Akki420ish 7 жыл бұрын

This is the best video I have seen on Fatigue testing. Good job.

@oblivious3862 8 жыл бұрын

That was informative af and well illustrated,, Thanks for the neat videos you provide. *much love*

@rawipap9773 8 жыл бұрын

Thank you! You just save my life from the mid semester test. : )

@bhatsujatyousuf334 6 ай бұрын

The best ever tutorial video i had witnessed in past 10 years!! N

@faisalbashir4563 11 ай бұрын

We truly deserve educators like you, great video overall.

@AIFars 4 жыл бұрын

I'm studying yes, but I'm REALLY enjoyed. Thank you very much for this effort.

@rumdonuts9111 3 жыл бұрын

I love your videos! The stress machine sounds like what anxiety feels like.

@vikalpluthra5404 6 жыл бұрын

Thank you for this explanatory video. This was very helpful to understand mechanical Fatigue in material.

@shaileshjangid1909 6 жыл бұрын

way of explaining the each concept is epic .........thanks for this video

@sivathouta490 3 жыл бұрын

That's really helpful in understanding the practical problem associated with Fatigue.

@deepakdilip1414 3 жыл бұрын

Dammit mate, why I didn't find this video early!! It literally helped me understand what I was looking for in the last two weeks!!

@lesedimantile3807 2 жыл бұрын

I'm a first-year student at the University of PRETORIA doing Mechanical Engineering, trust me it was nice to watch this video as I will be working under these things.

@MM-np4md 2 жыл бұрын

Congratulations, I would've loved to be at your school but my application got rejected

@nemod3338 4 жыл бұрын

Your videos are so clean and informative, without childish emotions or facial expressions. Keep informing us. Thanks.

@ericjohnvelasco422 Жыл бұрын

I am not sure if you want to be a good day at work now and then I will be there for you to be a u

@ericjohnvelasco422 Жыл бұрын

))))))

@hermeswilliansantiagoflore4988 8 жыл бұрын

Really interesting!!!, congratulations and thank you...:)

@srt1312 5 жыл бұрын

a perfectly and well defined demonstration for fatigue

@susanpinal8899 3 жыл бұрын

Easy to follow! & real life examples. Thank you

@shishirsingh3348 7 жыл бұрын

awesome worth to watch

@parikshitpadture4122 2 жыл бұрын

Excellent video with a good balance of theory and practice

@iamkeystroke 7 жыл бұрын

Wow, that was a fascinating video.

@siddharthbenadi7966 4 жыл бұрын

Best Explanation... 👏👌

@mahmoudmuhammad7525 3 жыл бұрын

Really your explaning Flow is great and showing the real life tests is really so helpful Thanks alot Keep Going

@Satyaki266 2 жыл бұрын

Wow ! What a Video. All the things cleared. Thank u.

@user-re5ue1om2r 5 жыл бұрын

awesome, thank you so much!

@williamcechinguarienti2071 5 жыл бұрын

Great video!

@pratikprajapati267 7 жыл бұрын

Excellent ever...

@samuelspencer5047 5 жыл бұрын

thank you for such a great explanation of fatigue test

@saifalino Жыл бұрын

Thank you, This was of great use!

@revanasiddappap635 4 жыл бұрын

Very nicely explained with examples. Thanks

@ShivamVerma-gq2sm 3 жыл бұрын

Thankyou so much for this tutorial.... very descriptive!!

@amolkumbhar1108 9 жыл бұрын

Awesome video....good explanation.

@naviddavanikabir 7 жыл бұрын

great video. I need to do this test on PEEK, a rigid plastic. the standard we follow is ASTM 7791. knowing only the ultimate stress and with limited number of specimen, how should I choose the stress/strain level to find the endurance limit and to waste as little specimen as possible?

@ashishkumarsenapati662 3 жыл бұрын

Hats off..very well explained.. thank you..👍👍👍

@bisisamosa2818 7 жыл бұрын

Super video, neat explanation

@karthikhs2569 2 жыл бұрын

Excellent explanation of the concepts with practical scenario

@alihassan1261 7 жыл бұрын

very helpful video. i like your work keep it up.

@ziyadalgaboby3767 8 жыл бұрын

good job, thanx

@88NA 2 жыл бұрын

This is a very high quality video. I just subscribe to this channel.

@yasmeenhamdy53 3 жыл бұрын

FANTASTIC VEDIO

@jackdrdo 2 жыл бұрын

Amazing video, by the real Life example understand very clearly and confidential 😃😃

@ace-rn3hn 5 жыл бұрын

thank you , very helpful !

@venubarathan8391 Жыл бұрын

Impressed with technical content

@kalsariyaajay7602 6 жыл бұрын

Very nice video and perfect explained

@randomgirl0707 6 жыл бұрын

Great video thank you!

@rajeshprasad101 7 жыл бұрын

very nice video. will use it for my class.

@rubasarkez9917 8 жыл бұрын

very helpful

@1dundermifflinfinity 8 ай бұрын

Very helpful. Thank you.

@barryeastallen1638 Жыл бұрын

great video

@subirbiswas2831 7 жыл бұрын

very impressive... thank you

@sambenkamel 4 жыл бұрын

great Video, thank you

@rajeev_kumar 2 жыл бұрын

Very good video

@chandanpatel989 9 жыл бұрын

great videos ...full of concepts

@stickerhppy 9 жыл бұрын

Do a video about XRF ;) Awesome channel! Subscribed!

@05032885741 7 жыл бұрын

thank you

@apm2649 2 жыл бұрын

Wow this is just awsm. I love fatigue test in real life

@arma_6872 2 жыл бұрын

Thanks for your explanation. 👍

@nilofarpathan665 4 жыл бұрын

this is quite interesting!!!

@sinakeshavarz9839 7 жыл бұрын

it was amazing. thanks for dis

@-SanjaykumarM-gx4sz 4 жыл бұрын

Very nice explanation

@zichaowang5064 7 жыл бұрын

Great job thanks

@RYONPAK Жыл бұрын

Best fatigue video ever

@ai7229 Жыл бұрын

Do you have a report on the subject?

@aboammarabdulqadir6470 9 жыл бұрын

good knowledge for students

@mohammadmahdiahmadpour264 11 ай бұрын

perfect👌

@wajahata6481 3 жыл бұрын

Very well explained..

@ajidamodaran 11 ай бұрын

Thank you for sharing

@hamedismail5703 5 жыл бұрын

الف شكر وربنا يوفقكو

@DB-xo1or Ай бұрын

very good video

@Varunkumar-dd1tb 5 жыл бұрын

Totally perfect t explain

@cemer1833 6 жыл бұрын

I am doing a thesis.Can I learn the technical information of this test device?I would be most grateful if you would look into this matter as soon as possible

@aronnilsson5343 6 ай бұрын

Excellent

@shridharacharya134 3 жыл бұрын

Well explained 🙏

@ACDroneDesignforPerformance 4 ай бұрын

Hi, could I use part of this video for my next video? It deals with the engineering of aircraft Panavia Tornado and I would give a short description of fatigue aspect. Thanks

@MaterialsScience2000 4 ай бұрын

Answer to "Hi, could I use part of this video for my next video? It deals with the engineering of aircraft Panavia Tornado and I would give a short description of fatigue aspect. Thanks": Sorry, that's not allowed; we've had bad experiences. Good luck with your videos!

@jessicajia6946 8 жыл бұрын

That is so good

@mubashirhassan2772 5 жыл бұрын

Good job... Please make more vedeos..

@taherbalasinorwala4751 8 жыл бұрын

Can you please make a video on impact test and creep test.

@salwaa.a574 2 жыл бұрын

Thank you

@CADDIA 4 жыл бұрын

thank you so much

@blancaroca8786 4 жыл бұрын

Obviously excellent job, so much better than cartoons or teacher memorized curves. Nice to see the result graph with statistical spread. Hopefully our critical car parts operate significantly under that! Just also wondering what happens using different frequencies for the loading. Is there some general trend?

@MaterialsScience2000 4 жыл бұрын

Answer to "Just also wondering what happens using different frequencies for the loading. Is there some general trend?" There is in principle little influence of the frequency of the load cycles for steel (and similar materials) at room temperature. Only the number of the load cycles matters. However, the frequency of the load cycles must not be too high, otherwise the specimen will heat up. It may be quite complicated at high temperatures.

@yashwanthgoud7156 9 жыл бұрын

awsme...

@orcanmehmet 8 жыл бұрын

Thanks for video

@lernfleissiger2096 7 жыл бұрын

nice video, danke. I want to ask, can we use the specimen's shape in a flat (plate) form?

@MaterialsScience2000 7 жыл бұрын

Answer to "can we use the specimen's shape in a flat (plate) form?": Yes, the only trouble is the danger of buckling under compressive stresses. So thin plates should rather be tested within the tensile region.

@lernfleissiger2096 7 жыл бұрын

MaterialsScience2000 thanks sir for the suggestion. I am sorry to ask this, do you have some references about fatigue testing of Aluminium?

@user-vc9qm4gd7y Ай бұрын

Thank you Sir

@DoctorSkyway 9 жыл бұрын

Very interesting, props for mentioning the enormous scatter those tests produce. It would also be great if you could do a demonstration of a rotating beam test.

@MaterialsScience2000 9 жыл бұрын

Answer to "It would also be great if you could do a demonstration of a rotating beam test": We had a rotating beam test machine long ago, but we do not have it any more ... sorry.

@rathansagi6827 9 жыл бұрын

Firstly thank you for such interesting and wonderful video..: i have developed rotating bending fatigue test machine.. results are quite satisfactory..

@tsshakthivel175 4 жыл бұрын

Nice Demonstration

@chiluchise652 4 жыл бұрын

Very helpful

@rachidmeghnine4081 8 жыл бұрын

hello , Can you explain me how the movement of echo of the spring is generated?

@MaterialsScience2000 8 жыл бұрын

Answer to "Can you explain me how the movement of echo of the spring is generated?" The oscillating mass is stimulated by the rotating imbalance. By varying the rotational frequency of the imbalance, the oscillation amplitude of the mass (and as a consequence the test force) can be controlled. The machine is operated in the subcritical part of its resonance curve.

@mundo01 5 жыл бұрын

finally i understand it , books are not able to show this.

@abc7988able 4 жыл бұрын

Nice video

@cesarescobar9679 7 жыл бұрын

Did you fabricate the device to grip the specimens to tension and compression test? This fixturing is the best option for tension and compression test for cylindrical specimens? Thanks

@MaterialsScience2000 6 жыл бұрын

Answer to "Did you fabricate the device to grip the specimens to tension and compression test? This fixturing is the best option for tension and compression test for cylindrical specimens? Thanks" The grips in the machine (as shown in the video) were supplied by the manufacturer of the machine. This is a good method, but many other grip designs are used: hydraulic grips, threaded ends, ... Properly designed, all of them are good. Sorry for the late reply.

@cesaresc8525 6 жыл бұрын

Thank you for your reply, for the conditions of our equipment, threaded ends were not one possibility, for this reason, I used this video and designed grips for our machine. Thanks again

@AkashSingh-oq4mp 7 жыл бұрын

thanks :)

@hamceditz 4 жыл бұрын

GREAT

@parasjain9416 2 жыл бұрын

Dhanyawad

@syahmizulkifli248 4 жыл бұрын

Hi, thank you for this video. Can I know is this test considered under ASTM ?

@MaterialsScience2000 4 жыл бұрын

Answer to "Hi, thank you for this video. Can I know is this test considered under ASTM ?" Principally yes, but you have to check the details for testing in the appropriate ASTM standards.

@nikola176 Жыл бұрын

Hi, how can I determine power of electromotor which I need. I have a max force on sping and spring stroke. Thank you.

@MaterialsScience2000 Жыл бұрын

Answer to "Hi, how can I determine power of electromotor which I need. I have a max force on sping and spring stroke. Thank you.": This is an important question that is not easy to answer. The electric drive only has to supply the power loss, i.e. the friction and the power absorbed internally. This is very little, in our machine the electric drive needs less than 200 W. One of the great advantages of this type of testing machine!

@Bade3zmanah 9 жыл бұрын

very good

@HungNguyen-98 4 жыл бұрын

loadcell horizontal so the force is correct when the loadcell must support additional clamps?

@MaterialsScience2000 4 жыл бұрын

Answer to "loadcell horizontal so the force is correct when the loadcell must support additional clamps?" Yes, the force is measured (almost) correctly. The typical largest error comes from the mass of the clamp on the left side and its inertia. But this is a very small error, because the left clamp hardly moves due to the large stiffness of the load cell. The gravitational forces are practically all compensated.

@fahadimran4251 5 жыл бұрын

science has not yet completely explained the complete mechanism of fatigue, the engineer must still design things that will not fail. In a sense this is a classic example of the true meaning of engineering as contrasted with science. Engineers use science to solve their problems if the science is available. But available or not, the problem must be solved, and whatever form the solution takes under these conditions is called engineering.

@thehammurabichode7994 4 жыл бұрын

Had to read it twice but I I got ya. Have a like, with lil peppercorns

@sivachidambaram1983 4 жыл бұрын

Can you please tell me the make of machine. I am interested in procuring this. Also I have doubt, how did you maintain the constant load and displacement.

@MaterialsScience2000 4 жыл бұрын

Answer to "Can you please tell me the make of machine. I am interested in procuring this. Also I have doubt, how did you maintain the constant load and displacement." The machine is an old testing machine that has been completely refurbished and equipped with a computer control by ourselves. There are some similar machines refurbished by commercial companies on the market. The constant load is maintained by computerized automatic control via measuring the force and adjusting the force by altering the speed of the spindle with the rotating mass.