Couldn't ask for more ... No unnecessary talks .. .only to the point pure explanation ❤️
@multifat84163 жыл бұрын
Thank you from Italy for posting this interesting video
@tuhinsuryachakraborty Жыл бұрын
Helped me to score really good marks in my semester examination on Material Science and Engineering.
@magkat79227 ай бұрын
Great explanation, thank you sir. I got to understand fatigue better
@whizpez3 жыл бұрын
Thanks, Really good explanation and great examples.
@devendrabhatt7490 Жыл бұрын
Many thanks sir for concept clear , east and best
@pranaytejakayyam53176 жыл бұрын
Thank you sir... you have been very helpful for my revision of concepts..
@boinivenkatamma34276 жыл бұрын
Tq sir
@nikhilkumbhar25512 жыл бұрын
@@boinivenkatamma3427 à
@tanmoydutta58463 жыл бұрын
neat explanation of all required concepts...
@vellaayush52984 жыл бұрын
Dear Sir, Last day I had an interview at IIT Jammu, Professor asked me why non-ferrous materials don't show a real endurance limit(Horizontal S-N Curve). I'd no answer, later I searched in Dieter but they had no reason for it. May I get some help?
@varaprasad66084 жыл бұрын
True endure limit can be observed for high strength materials not only for steels. Crystal structures plays an important role in determinning this. For the case of non ferrous metals like Aluminium or copper (which are soft ) true fatigue life is not observed. Presence of more than 5 independent slip systems allows easy gliding. That's why continuous decrease in life with stable crack propogation can be observed.
@anuragchakraborty87662 жыл бұрын
@@varaprasad6608 Please fix your spelling mistakes
@monkephilosophy6845 жыл бұрын
but why does fatigue occurs? on microscopic levdl?
@peterbilal67925 жыл бұрын
Good Presentation!..But Take Care of the Signs in the equations(max and Min) which is negative?..
@jengerp3 жыл бұрын
He did it right .it supposed to be that way.
@TSulemanW5 жыл бұрын
Nicely explaination how about for rubber material is it the same
@poulamidas52212 жыл бұрын
Sir, can you please arrange a class on radiation effect on TDBT..
@ssp.8695 Жыл бұрын
sicklic loading?
@Precious_Moments9993 жыл бұрын
Thank you sir from Bangladesh
@AmitKumar-kj3qs3 жыл бұрын
Ak number...
@ayay98354 жыл бұрын
Sir what should be the grain size to avoid high temperature fatigue ??
@patrickcurran55364 жыл бұрын
the larger the better, for example single crystals are used in a jet engine where both the temperature is very high and they undergo high cycle fatigue as they are often going from turned off to rotating at a high speed. fatigue mainly happens by defects moving to grain boundaries, so if there are less grain boundaries fatigue is reduced
@patrickcurran55364 жыл бұрын
^^ for the turbine blades
@ayay98354 жыл бұрын
@@patrickcurran5536 thanks for your answer. I just want to ask one more thing . Are these defects that you are referring to, induce crack initation at grain boundaries ?? And is thermal fatigue always cause intergranular failure ?
@patrickcurran55364 жыл бұрын
@@ayay9835 defects are things such as dislocations, stacking faults, twin grain boundaries, but the defects such as dislocations coming together is what induces crack initiations at grain boundaries. Dislocations are small holes in the crystal if you put many small holes together you get a big hole or a crack. thermal fatigue i'm not sure, could possibly be related to dislocations moving and somewhat related to creep, but i'm not too sure what thermal fatigue is
@naughtyani8454 Жыл бұрын
I wish my collage professor are also same as you. Atleast handwriting should be
@siddharthjena21893 жыл бұрын
Sir why stress amplitude is taken in S-N curve why not mean stress??
@rajeshprasadlectures3 жыл бұрын
Fatigue inherently involves the cycling of stress, therefore the stress amplitude is important. what S-N curve shows is that the higher the stress amplitude (S) lower is the fatigue life (N). But the variation of stress amplitude is done at constant mean stress, usually zero. But, the mean stress does affect fatigue life. Increasing the mean stress decreases the fatigue life. But this aspect is not captured in the S-N curve which is drawn at constant mean stress.
@siddhu19202 жыл бұрын
Sir does it come total under fatique failure sir just confirm it
@newtonian-flowАй бұрын
too difficult to get it
@rajendraganguli77905 ай бұрын
thanks a lot sir
@choice03 жыл бұрын
Clarity from the root
@sayyedhakeem46084 жыл бұрын
Thanks sir
@TheHonchoofAllSpearheads5 жыл бұрын
me likey how indians pronounce "fatigueee"
@DennisLaceyVlogs5 жыл бұрын
sir thank you sir, good video sir
@suan_tech20195 жыл бұрын
What is no of cycle to failure
@rbhagyaraju51623 жыл бұрын
10^6 cycles
@kirankumar-ku4dz5 жыл бұрын
thank you sir
@akif69014 жыл бұрын
0:19
@introductiontomaterialsscience4 жыл бұрын
?
@kakolisahoo48244 жыл бұрын
He probably refers to the fact how you pronounced shy-click loading as sick-lick loading !
@BC-yr6eg4 жыл бұрын
👍👍👍👍👍
@Rose-nn9wb4 жыл бұрын
🙏🙏
@abhinandabhikichu59796 жыл бұрын
Thanks u very much sir.
@adarshsoni85265 жыл бұрын
Very
@anuragchakraborty87662 жыл бұрын
Generic cookie cutter explanation of fatigue basically offering no extra insight than what's available in your typical textbook
@surykantchaudhary51382 жыл бұрын
There are a lots of video on KZbin far better than this 😬
@Demigod0075 жыл бұрын
ghanta bhi nhi smjhaya...isse 10x better book me diya h
@revivingfaith172 жыл бұрын
Han bhai mujhe bhi hindi me bataye to kuch samjh me aaye angrez ki aulaad