Added: 3 years ago
From: kentchemistry
Views: 70,380
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  • wie warm muss das wasser sein oder kalt  wie viel grat

  • can anyone tell about temperature rangeof hot water , i mean transformation temperature ???

  • If you tie a knot with this and then dip it in boiling hot water, will it untie itself?

  • Blow dryer would do also

  • Hey this would be good for the military LOL, got a hole in your wall? Get some hot water!

  • where u get nitinol? ~_~

  • muscles glasses's sunglasses are made from muscle wire mixed with bacon

  • Is this some sort of christian magic ?

  • ranma effect

  • This spring does not spring, so why shape it into a spring?

  • @jorgefc Some springs are meant to stretch and pull back, rather than the other way around. They're hooked on the ends to hold things together.

  • So, a "spoon bender" has a spoon made of this metal, it's original shape is bent, when the guys picks it up it has been straightened, the heat from his hand make it return to it's original bent shape and makes us think he has done it with his mind?

  • i was the first person in the world to set nitnol with batterys

  • Ok, but does he get amnesia at some point?

  • how do you change its original shape?

  • i am doing this for science, so what happens is that the nitinol can be bent and twisted but too far otherwise it will stay. than you can just pop into hot water and it go back to its remembered shape.

  • Hi...a question:do u know the diameter of your nitinol wire?i mean, in the video you have got a awesome effect, never exceeding the martensitic yielding point( 8%)...but we can't do that with a 0.015 inches nitinol wire..any suggestions?

  • This behavior has been known for over a hundred years. A number of ferrous and non-ferrous metal alloys undergo stress or temperature induced reversible shape transformations. These transformations were first observed 130 years ago by a German metallurgist named Martin and hence they are called martinsitic transformations.

  • how does it do that?

  • where do u buy this stuff?

  • @byaahcheckit go to unitednuclear (.) com and seacrh: Nitinol 'Muscle' Wire its pretty cheap

  • how does the nitinol metal get into the shape of a spring in the first place?

  • when its hot then its made into the spring shape, thats the shape it returns to at the high temp

  • why doesnt it just change back to its original shape when it hot when theyre tryin to make it a spring

  • it has to be heated to incredibly high temperatures before you can change the 'parent shape'.

    This spring is cool.

  • @awesomefrankrapid actually u can just use a blowtorch

  • @brandonj70 By bending it while hot

  • @brandonj70 It is shaped under extreme temperature. then it is let to set and "memory" bonds are formed. once you distort the lattice (bend the metal), it will return to 'set' shape when given thermal energy.

  • @BlackGypoMagic : Hi , i'm Maqbool ,student of (BE) Material Sciences and Engineering , i'm working on ' shape memory alloy ... can you help me if i need about ....... reply plz

  • @brandonj70 you can bend it while it's hot

  • @brandonj70 you have to bake it into shape in an oven at around 500 degrease.

  • @brandonj70 you can "bake" it into any shape you want

  • @brandonj70 Wrap it around a pen

  • @brandonj70 if you watch household hacker's video, they showed how you can burn it into any position you want and then it goes back to that position when it is heated again

  • @brandonj70 you bake it to what ever shape you want

  • @brandonj70 the factory coil's it and heats it up to 1000 degrees changing the parent shape

  • @brandonj70 Once it is heated to above 600 F I believe.

  • @brandonj70 you can bake it into any position you like

  • @brandonj70 They come out from the ground like that under the form of a rock called spriodotite.

  • @brandonj70 when they make it in high heat it has bent into a spring and you can actually use a lighter to change the wires default shape :D

  • @brandonj70 force and heat

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