Nitinol: The Shape Memory Effect and Superelasticity
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- เผยแพร่เมื่อ 26 ก.ย. 2024
- Bill demonstrates the temperature-dependent shape memory of nitinol metal. He explains how "twinning" in the crystal structure of nitinol produces the memory effect. He shows a nitinol-based engine that is powered by temperature differences. He closes the video with a description of superelasticity, a phenomenon related to the memory effect, which he demonstrates with a cardiac stent. (This video is dedicated to my second son: born right after the rough draft was finished, and who, thus, delayed the filming of the final video by eight months.)
Welcome back, Bill. We have missed you. I hope your family is well.
Deus Vult. Shhhh, if u want to keep seeing uploads.
Deus Vult. How is this perceived as a threat?
Who's Bill? Use inbox
@@NublaNukes he should have listen, now there are no more uploads
@@michelangelop3923 fuck u i blame u
Couldn't believe my eyes when I saw the notification. Best content on TH-cam! I watch the aluminium can video like twice a year!
OmegaScathach Only twice a year. Recommended viewing at least once every month. Preferably with a nice cold beverage in an aluminium can in your hand.
That one really is a pure classic! One of the few science videos I regularly come back and watch once or twice a year, along with Scishow's most deadly chemicals one, their one on the different artificial sweeteners, and the Vsauce Deja Vu video!
Nice to see a new video. It's been a while.
Second son born eight months ago ... appeared just after the draft was finalized, but prevented filming the final video ....
Congrats!
@@engineerguyvideo congrats on the addition.
Great to see you back Bill, an excellent video as always. Can we expect more videos in the near future? :) (Congrats on the second son).
Congrats! I was really hoping you weren't done making videos!
Haha! I suggested on Patreon that Cody from Cody's Lab mention this video, and he did!
I hope you get a bunch of new fans, I've loved this channel since the instant I found it!
Im here from cody's lab as well.
In all seriousness, you should switch off Patreon when they erect the new content creator friendly one being made to compete...
I'm here from the TH-cam Algorithm finally sending me something awesome!!
The Engineer Guy should totally hang out with Destin from SmarterEveryDay... They'd be instant best friends guaranteed!!
about time… Great, as always!
Engineer Guy!! I've just come across your channel and I cannot believe the quality of your amazing content and explanations.
Do you think this will lead to string instruments to stay in tune for ever?? Because that sounds so futuristic that I never even thought it was possible... But this technology should work right? Awesome Engineer Guy?
Anyways just a crazy new subscriber that tapped the bell and all just a few seconds into the Titanic and Olympia video!!
@@jayemeljay2117 That would mean to tune it you'd heat the instrument to 500 c, which would destroy it.
75c, You weren't listening
To all the young TH-camrs that speak with cringe-worthy nasal tone and vocal fry:
Listen to this fellow Bill's superb speaking voice, and learn.
During the golden age of television and radio, his cadence and delivery modulation were a prerequisite for any broadcaster. Why is he so good? Simple. Like a great operatic singer, he understands the importance of controlled breathing and using his diaphragm - to elicit a superior resonance and gentle yet commanding tone.
A joy to listen to, really, this is.
It was a joy to read this. Superb use of the English language.
Nice, but it's better to do it badly than to not do it at all.
Many people tune out when a voice registers like fingernails on a blackboard. Either that, or they're tone-deaf and have tinnitus.
@@lyrimetacurl0 I disagree. If done poorly one opens themselves up to mockery and ridecule. Then viewers will give their many suggestions on how to do it better . That's if they don't tune out. A few seconds of a poorly made video and most vacate and go elsewhere. Even if the subject matter is relevant and/informative. I remember the old adage. If your going to do something. Take your time and do it right.
It is possible for one to appreciate the past without having to curse the young under your every breath. This entire website was built by the "nasal-toned-vocal-fried-youth". Don't take it to heart, but you do come off as a cranky old man or one deluded youth with a faulty understanding of the past.
I never knew about that Nitinol and was pretty suprised when that spring bent itselfe back!
But even more suprising is that engineerguy doesnt seem to age...
Every year he is heated to 76C
nice
LMAO roidroid
roidroid That must mean he was conceived @~500 deg C
@@Shanidar1
I suspect that was the case with most of us.
The production value of your videos is incredible. The topics are oddly satisfying. Great Job!!!!
Worth the wait - now off to ebay ...
Dylan O'Donnell Those "magic" paper clips are quite expensive. $30 for 5!
Cameron
Why does your channel name appear as if you were the video creator?
What do you mean?
Oh, GRBTutorials .. I think you mean I have a verified tick? All verified creators do.
Another excellent video depicting the amazing powers of years and years of accumulated knowledge refined, repurposed, and reforged to make human lives better! Can't say enough good things, Bill! Had me glued to the screen every step of the way! Looking forward to the next installment in your video series!
Years ago, nitinol eyeglass frames in really cold winter air lose rigidity. They almost became floppy. A bit awkward when you'd like them to stay on your face.
All of my frames for the last 20-ish years have been 'Flexon' brand nitinol. I had only one pair break and that was at the bridge while I was demonstrating how cool they were, lol. I think they didn't do so well on twisting but fine on bending. But at this point I think only the arms are made of nitinol.
@@snaplash Why would Nitinol be a selling point for a frame? I really don't see the reason.
@@hardcase1659 As said in the video, they are pretty resistant towards compression and bending, so if you were ever to unknowingly sit on your glasses, or step on it, the frames would not be damaged. It has its merits, but conventional frames are better if you ask me.
@@fornixtail0829 I bet that using any alloyed spring steel would also be very resistant to deformation. Using Nitinol just doesn't seem like a practical investment.
@@hardcase1659 It does not seem practical because you may be living in a place were the temperature fluctuates to the extremes. As most metals, when exposed to low temperatures they become brittle. This case is moreso observed in Nitinol that is why Nitinol glasses mainly break in cold climates, but if you are living somewhere relatively warm then it is a pretty viable pair of glasses. In addition, If you still decide on buying Nitinol glasses, I would recommend buying high quality ones since impurities create weakpoints that may break over time.
So thorough. I love smart people who hold nothing back, instead of assuming you're too stupid to understand. Awesome. Thank you sir.
Congrats on the baby boy sir!
Thank you
@@engineerguyvideo wait you have a baby, an heir to the engineerguy throne?
Yes congratulations sir
@@kosherkingofisrael6381 Yes a true Nazi engineer who works with me to become the ruler of @engineerguy
@@poulosegeorge5457 what?
A nitinol demonstration was what made me want to go into the materials side of chem E when I first started undergrad. Still just as fascinating! Thanks Engineer Guy!
The only channel I allow notifications from!
I run a news channel so I get notifications from close to 100 channels plus a few other channels...
Kurt Elliott Literally nobody cares.
Paul Dunbar Thanks for that reminder, I hadn't clicked the bell!
Maybe you are missing cody's lab, physics girl, the action lab, veritasium, smarter every day, fraser cain, bruce yeany, practical engineering, tom scott, periodic videos, electroboom, engineering explained, steve mould to name a few. They are quite good too! ;)
If you have recommendations, I'm interested :D
@@Ktulu789 Big Clive for teardowns and detailed explanations of cheap and simple consumer electronic gadgets (he does a lot of dollar store/pound shop electronics for example, or household things like GFCI/RCD units).
EEVBlog if you want to delve deeper into electronics-personally I'm watching him less since there's a lot less material geared to the fellow EE, but I imagine his teardowns, dumpster dives, etc., could be of huge interest to the more electronics-oriented hobbyist/curious viewer.
Engineerguy!
I cannot truly express in a comment how happy I am to see a new video of yours. It is somewhat based on the fact that it's coincided with a somewhat turbulent time in my life, but the largest factor in it is that your videos induce a great feeling of happiness and comfort.
Thank you.
Always delighted to see a video from you. Thanks again for all the great content!
One of my favorite channels. I learn so much in a short period of time.
What an awesome way to start the day!
Excellent video. I’ve been fascinated by nitinol ever since I handled a piece and watched it magically go back into shape.
The Bob Ross of engineering, I'd love to see you upload more often!
Another superbly described technology. Bill Hammack remains the best communicator of science and engineering on You Tube.
Nice to see another one of those amazing videos.
Was worth the wait.
Thank you very much. Your videos has been useful.
Specially you speak in a very clear good English that non-English speakers understand easily.
Thank you very much again.
Yay! It's so uncommon to see these videos in my subscription feed, it truly is a good day when it occurs!
Micah Philson I had to look twice at the release day to make sure. Yay a new Engineer Guy video!
I never knew there was nickle in the alloy. I also didn't realize how long this material has been around. So happy to see another video! Missed you so much! Thank you Bill and crew!!!
You want it back?
So that's how cardiac stents retain their shape! Thank you for this!
As I sit here 'hosting' three of them, I'm pretty grateful - eight years & counting - Nitinol eh? One for the pub quiz : )
Lod dude Good for you and the scientists that worked all this out from the metallurgists to the physicians and all of our loved ones even if it only me, lol.
Cheers from John, Australia.
It is uncommon for cardiac (coronary) stent to be made of nitinol. It is not necessary due to 316L and L605 alloy, which are more affordable than nitinol, being good enough to withstand the pulsatile strain in the coronary artery. Nitinol stent however is commonly used in areas with high strain or tortuous section like femoral artery, or if removal is desired like in IVC filter.
Source: I work in the industry
Stephen Abracadabra beat me to it. Most of our coronary stents are cobalt alloy. We do however implant an aortic porcine tissue valve which has a reticulated Nitinol frame and is delivered transcatheter like a coronary stent. Slightly larger catheter though (16F)
Got in a car crash and had a heart attack when crashing? Save your life and your car!
Car gets dumped in hot water and boom its fixed!
Heart attack boom cardiac stent
How fast you show the concept, in 20 seconds..20 seconds that convinces you to stay another 9 minutes. Thanks for the video!
Clear and concise, as always. Thank you.
Bill, your delivery is incredible. Thanks for these contributions to youtube.. amazing stuff!
one of the most enriching futuristic knowledge is available in this video, thank you sir.
Welcome back Sir!
I have watched a lot of videos explaining how Nitinol works, Your video is by far the best explanation of how this metal. Thank you.
Alien technology.
Pleaaase do videos more often than twice a year! They don't even need to be these super premium videos with elaborate examples/graphics, or about an amazing subject. Would be happy just to hear you talk about engineering stuff off-the-cuff without any editing.
"I'm Bill Hammack- the coolest damn guy on TH-cam"
Nope hes not
Yes he iiiiiis
You are a superlative teacher; I wish to thank you for providing a plethora of material with which I, and many many others, can enhance the mind and knowledge-base. There is certainly beauty in the science.
I'm curious now to see a SHEET of super elastic Nitinol
Ahh. It's always exciting when this guy makes a video. They don't come often but the quality!
Those who have disliked the video, kindly justify why you disliked such a perfect explanatory video.
Did you know you can run electricity through it to make to heat it up too.
I didn't know that!
I was always fascinated about this technology. Thank you very much for this detailed video.
I have seen volt meters (kind of) working based on heated nitinol wire. May try googling 'nitinol drive unit Foxboro' for further information :)
@@engineerguyvideo it opens up quite the possibilities. Being able to trigger it on command. Came up with the idea for use in a steerable catheter tip. Did not have enough time to develop it but it was exciting project.
--Isnt this also the wire thats used for resistive heaters, like toasters? Lots of uses, this stuff.--
_edit: Nope that's "Nichrome" not Nitinol, thx @heyou_
@@engineerguyvideo There's a video by Mike's Electric Stuff where he takes apart a disposable insulin pump, and the pump mechanism used nitinol wire
This is one my top three favorite channels on TH-cam. The content, presentation, and domain expertise are all excellent.
Why doesn't the nitinol spring at the beginning exhibit superelasticity when you stretch it?
In the case of nitinol specifically, the atomic ratio of nickel and titanium dictates whether it's shape memory or superelastic. A change in about 0.1 at% nickel results in a drastically different transformation temperature than before.
I have never before seen such concise, information packed content in my life before.
Cody's lab sent me here, I was curious how it worked after seeing him use it, Thanks
Hope this signals a new era of videos! Love this channel!
Need more videos from you, more than any other videos in TH-cam. Please do upload videos more frequent.
Nitinol is amazing. Fantastic video delivery!! Very easy to follow. Thank you
Did anyone else get optical illusions from the pattern of spheres starting at 1:59 ? If you focus on one sphere, the others appear to move slightly.
Congratulations on the new addition to your family! Glad to see you're back, it's always a pleasure to watch your videos.
Thank you
Great content, but I could listen to you read a phone book and be transfixed.
Agreed. Definitely has a radio announcer voice.
He wrote at least 2 books
Very nice and concise way to explain the martensite transformation in laments terms! Thank you!
The thumbnail made me believe this is a Nile red video
Really cool to see you explain how the Nitinol engine works instead of just showing it and moving on.
How does the efficiency of the nitinol engine compare to a sterling one?
Not very efficient considering the energy lost in heating water. Still super neat though
Id be curious to see how many joules of thermal energy is absorbed to reach max speed. Theres mire efficient ways to heat things, like with current. Niti is resustive compared to other alloys
Well made video and very professional gentleman. Helped me understand structure shifts and how nitinol works!
ive heard about using nitinol in the "tires" for future vehicles like the mars rover where a tire inflated with a gas isnt an option and because its a "tire" it needs to retain its shape.
In the literal sense a thick iron hoop can be a tire, as seen on old horse drawn wagons. I'm not certain of the etymology but I think the term comes from the iron hoop "tying" the other wheel parts together similar to the hoops on a wooden cask, but of course it also served to wear much longer than bare wood and was fairly simple to replace.
The moon rovers used woven spring-steel wire tires. Inflation with gas is always an option but repairing punctures and re-inflating could be a bit more trouble.
wolfedog99 Yeah calling for roadside assistance from Mars or beyond is just a tad too expensive
What a coincidence, I've just been watching this th-cam.com/video/2lv6Vs12jLc/w-d-xo.html
It's been a while. In the days where I switch videos after 3 seconds, this video kept my attention all the way through. I love this channel
Aren't you that one guy without pants??
I've got two of those stents between my left and right ventricles. They've done a good job for the last 16 years.
Protip for any wannabe psychics and people who just want soup to be exciting again: There are spoons made out of this stuff.
My mother would have loved that, so that if I took ages to eat the soup it'd grow cold and the spoon would get all floppy
Jesus Christ, a new video. Couldn't click fast enough. With your voice, I think these may also work as ASMR. Helping exercise brains and then helping them rest. Go Bill!
Such a happy warm feeling when I see a notification. Many thanks for Fatal Flight, my father lives a couple of miles from the hangers and they truly are a sight to see. Hard to imagine what it must of been like to see airships of that size.
This video should have a gazillion views. What a great material and even greater explanation!
BILL! BILL! BILL! Bill Hammack the Engineering guy!
You don't upload a video very often but when you do I always appreciate your time.
Loved the end " I am Bill Hammack THE ENGINEERGUY " after a complete information of shape memory & superelasticity | ultimate like ever 👍
Here from Cody's lab
Thank you a lot. I've been searching about the subject "shape memory alloys" and had a lot of trouble to understand it. With your video, it all became clearer to me.
Are you going to be consistently uploading from now,Sir?
I'll try.
All the best👍🏻👍🏻
PhD in Materials Science, and I have never understood Nitinol until I saw this video. Thank you!
Any1 from Cody's Lab?
Owo
Wow. My dad had 2 stents put in him after suffering a heart attack recently and ever since then he doesn't lay on that side worried he might damage the stents. But after this video clearly those things are indestructible.
Well isn't this a sight for sore eyes!
i could listen to him explaining stuff for hours
CodysLab! Subbed :)
this channel puts quality > quantity videos and i love it
"Not dead" - me for seven months.
Finally proven correct.
This is the best presentation of Nitinol and how/why it works on TH-cam, well-done. I would love it if you did a video on a variety of nitinol engines.
I bet Apple has a Nithinol Power Cable developed, but they're not releasing it until they actually need something "new" to add to their product line.
I would bet they purposely design cables to have a short life. (And I would make this bet because I know from simple examination of the products that they do this.Their enthusiasm for designed obsolescence, to the point of releasing updates that purposefully hobble otherwise functioning devices, has put Apple into legal trouble in some countries.)
@@TheDuckofDoom. you watch Louis Rossmann too?
You deserve much more views. Your "simplistic" way of explaining the nature of our universe is the best there is in any media. Great videos from the beginning. Keep it up! Wish you all the best!
Welcome back! I'm glad you took the time to spend quality time with your family and your new son. Thank you for making this video, it was interesting
Amazing video. It really shows the effects of the subatomic world on the macroscopic, and vice versa.
I got a small piece of wire as a child and I couldn't stop playing with it. It seemed like magic! Today I love my nitinol glass frames; they are super light and have taken a lot of wear and tear.
Your voice.. I feel like I'm watching an educational science video from the 70s and 80s.. love it.
Great to have you back...we need more
Glad to see the channel back! Hope your son will appreciate your videos when he gets older.
I am so glad you're putting out more videos. I love the education you give me. You're eloquent, you're expressive, but direct. Your examples are clear and concise. As someone who has not had any formal education beyond highschool I find your videos to be inspiring to me to learn more about the mechanics of our world. Thank you so much, man.
P.S. I was a random dude who texted you and you mentioned you had a new son a couple of years ago, I really hope you and your family are doing well!
I have two sons now!
Was happy to see a notification of a new video. I love your content.
As an engineer, I love this video. It simplifies complicated chemistry physics and their parent thermodynamics as if it could be taught in grade school.
I had nitinol glasses when I was very young. I was always fascinated how resilient they were.
Welcome back, Bill. Thank you for the informative video, as always. Congratulations on the growth of your family!
Of all the amazing information you relayed in this video, the most fascinating part was the mention of General Motors using any amount of quality material in their products haha
I have been waiting for your videos like this for awhile now! Excellent content. Good to have you back!
Bill! We missed you, Bill! Fascinating video!
Have missed your videos greatly, congratulations on your second son, and your video is wonderful as always.
Thanks Bill! My materials lecturer at RMIT in Melbourne got me on to your videos. Fantastic work. Always so fascinating.
I have been wondering about nitinol for a while now. Finally a good video on it. Thanks, Professor!
Thanks Bill, we're so glad to have you back!
@engineerguy and Bill, your videos are ALWAYS brilliant but what gives with the long delays. Give us more! Feed the beast with your fascinating science and oh so soothing voice.