HELLO, I have an exam in 2 and a half hours. Can you tell me why the initial fatigue results are scattered? Cant find the answer anywhere. Great video otherwise!! Thankyou!!

@TheEfficientEngineer

4 жыл бұрын

Hi Peter! Most of the scatter will typically arise in the crack initiation phase, where there is more variability, than in the crack growth phase. This initial phase will be sensitive to things like the surface conditions of the test piece. Of course there will also be some variability associated with the test, e.g. the equipment that is used. Hope that helps - good luck with the exam!

@petercalow1028

4 жыл бұрын

@@TheEfficientEngineer Ahhh yes, thank you so much for replying so quickly. Will need the luck!

@Tranefine

3 жыл бұрын

peter calow How did you do in your exam? :)

@hamz4977

3 жыл бұрын

hqhhahahHAHAHAHAHAHAHAHHAHAA

@ashwinpande7095

3 жыл бұрын

i cant believe he actually replied just in time before your exam

my professor spent tens of hours to deliver what you have delivered in less than 10 minutes

@babajungLA

3 жыл бұрын

That's because the professors need to justify their jobs and therefore have to drag out lectures when in reality they can be explained in much easier terms as seen in the video.

@ziheng666

2 жыл бұрын

If the professor use the video method to teach u in the first time, May you not understand the content.

@shakirobaid2895

2 жыл бұрын

if you have no idea what stress is or what stress strain chart is or what fatigue is .. what stress amplitude is .. it could take a while to get here and for you to understand it .. however going through semester and thn filling up gaps in understanding from youtube videos work really welll

@CluckYou21

2 жыл бұрын

This guy spends tens of hours creating this video.

@mikimikito-mc5mr

2 жыл бұрын

This man is God

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That was basically my entire Masters level Fracture Mechanics course condensed into just over 8 minutes. Great job!

I wish there was a channel like yours explaining engineering facts when I was an Engineering student. Complicated engineering concepts are easier to understand and remember with multimedia like your channel. Thanks

@elnuryus

6 ай бұрын

+

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Great explanation of fatigue phenomena in all their aspects, in a simple way. Thank you ! 🙏

Very good intro to problematic. Just what I needed. Thank you!

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I had a poorly packaged pipe shipped to me crack from either reaching tensile strength, cycle fatigue, or both because it wasn’t strapped down and it was fully constrained at one end. So while riding on the truck it freely bounced up and down, like a spring until failure. Now I’m writing the FMEA report. Calculations showed it may have reached plastic deformation elsewhere if tensile strength was reached, let alone ultimate strength. Now have to measure crack size for comparison. Thank you for the useful review!

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This video and all your videos in general are really cool, educational and cristal clear. I wish you made a couple of lecture about LEFM and fatigue approach for multiaxial state of stress criterions or non proportional mixed loadings. Greetings and thank you!

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mannn than you soo much!!!! you really made it 100 times simpler than what my teacher was trying to explain

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Make a video on creep pleaseeee

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Thank you very much for the video!! After I watched your video, I realized that most of the professors at a 4-year research university don't know how to teach!!! I cry 😢 because videos like this didn't exist when I attended college. P.S. I graduate from college back in the year 2010 by the way. Back then KZread was just 5 years old in my graduating years, meaning it was still relatively new, and learning engineering concepts from youtube back then weren't as common as today. There weren't that many videos that are educational and can teach me engineering either back then. All I can say is: college students nowadays are such a group of lucky fellows.

OMG this video just help me figure out the answer for my assignment question, thank you!

Very simple illustration Bravo.

Great video introducing fatigue! Could mention that damage summation by Miner is only approximation as for variable loading actual loading history can make huge difference. Fun fact initial high loading (even partial yielding) for steels can improve high cycle fatigue.

wow, such an informative lesson!

Very Good Work Sir. May u always make such quality animations lectures for us.Thanks

i learnt more in this video than i did in 3 weeks worth of lectures

best explantion for fatigue failure thank you very much

Useful and simple presentation

Such a great explanation......We need an episode on VMEA/FMEA analysis

Simple and details explain action.. thank you...👍😀

Wow, a video like this can clear up the whole concept that one were struggling to understand during its semester. That one would be me 😅.

thank you so much, your explanation is so helpful 💛

Thanks for great videos.

These videos are so good!! could you do one on stress concentrations??

Hi. Huge fan of your service. It isn't easy to eat an entire sugarcane but it can be easily consumed as a juice. As part of an engineering community, we are grateful for your work. Can you please do a video on Fracture mechanics as a follow-up to this?

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Great Explanation Thank you so much 😊

Superb sir , Greetings from INDIA !

this video explain more about fatigue , thanks for this information

What a great video! THANK YOU

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Thanks man. Great video

Very Well Explained

very useful videos, thanks

U deserve millions of subscribers and their support. Please upload videos on Fluid Mechanics part too.

Very easy to understand

On the stress amplitude graphs at 4:15, you should’ve plotted some of the other theories, especially since the Goodman line and Gerber Line do not guarantee infinite life, as they can fail from going past the yield point of a material, giving them finite life. This is true for most theories, but especially true for these

Thanks for the video.

INSANE FINALY SOMEONE CAN EXPLAIN SIMPLE IN 8 MINUTES

This guy deserves a billion subscribers

I love these graphics! what software is being used?

this is a great video

Thank you !

More on fatigue please!

so clear, ty ty ty :DDD

Please please please please add more such videos and for complete mechanical engineering. I am requesting you🙏🙏

you explain it very clear! thank you very much! just more about rainflow counting method, in matlab there is built in function that give you the cycle number, range and mean of a complex fatigue record in time domain.

@TheEfficientEngineer

4 жыл бұрын

Great tip, thanks! There are also Python modules out there that can do the same, e.g. pypi.org/project/rainflow/

very informative

Thanks life is easy when u have good ppl

Learn lot from this

Please keep doing these videos 😭

Thank u so much!

Thank you

Thanks!

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amazing!

Hi, I'm wondering, to calculate a stress range, the stresses you are using are the principal stresses? or is it the equivalent von Mises stresses? Thanks for such an amazing video!