• Study shows graphene able to withstand a speeding bullet.
    71 replies, posted
what if there were tanks made out of graphene
[QUOTE=SGTNAPALM;46594958]Isn't it still incredibly toxic?[/QUOTE] Toxic? No. Physically worse for you than asbestos if you inhale small flakes of it? Yes. It doesn't damage cell structure or poison you, but your body cannot get rid of it once it's inhaled.
[QUOTE=draugur;46595059]So it solves the problem of the bullet piercing the skin, but what about the equally deadly massive physical impact?[/QUOTE] Same thing we do with soft body armor, add a trauma plate. [t]http://www.pointblanksolutionsinc.com/international/_images/_mainImages/productPages/traumaInsertPlates.jpg[/t]
"The researchers found that the sheets were able to dissipate the energy of the bullet by stretching backwards" - How would this factor in with the body as a backstop?
I would imagine there would be a shock absorbent layer behind it.
[QUOTE=ilikecorn;46596076]Graphine is the magical substance of "cool we can make all this cool shit" that we all hear about one time and then it never happens. I love it.[/QUOTE] Here's an idea that will make you millions if you can figure it out. Find a way to mass produce it in workable layers, cheap. Like even getting it down to same cost as silver per area. Actually scratch that. You will become a billionaire if you figure this out. This or cold fusion.
[QUOTE=Buck.;46596004]I'm going to be very optimistic but since we know graphene wont tear, and the very structure of it is very consistent, we should be able to accurately predict how it behaves. Perhaps if it's used in some sort of a composite material like someone mentioned above you could design something based on it's properties. I don't know how many sheets you would need to stop a real bullet so it's hard to imagine what it would behave like, I mean can you bend it but not tear it? Maybe it would be possible to mold it and or fold it to create shapes that could spread the force of a bullet. Could it be possible to create a structure from it that is designed to be able to contract evenly from force applied anywhere so if you get shot it absorbs the energy by restricting a little around your body instead. [B]Or could it be used even more cleverly where the energy could be converted into heat, or knowing that graphene is basically magic anyway, even electricity?[/B] As you can see, Graphene fascinates me.[/QUOTE] You're not far off, given the hole size of graphene, it is perfectly useful as a Faraday cage. Thus you could potentially survive HERF/Microwave weapons. :v:
[QUOTE=LoneWolf_Recon;46596156]You're not far off, given the hole size of graphene, it is perfectly useful as a Faraday cage. Thus you could potentially survive HERF/Microwave weapons. :v:[/QUOTE] Well phones would be a problem.
[QUOTE=Morbo!!!;46596110]"The researchers found that the sheets were able to dissipate the energy of the bullet by stretching backwards" - How would this factor in with the body as a backstop?[/QUOTE] You don't use the body as a backstop, you put some fabric behind it or layer it enough to reduce the chance of it pushing in far enough. That's how current soft body armour works, hell you can even if you want shove a ceramic or steel plate behind it to act as the backstop which is also currently used.
[QUOTE=ilikecorn;46596183]Oh no, dont get me wrong. I'm very well aware of just how hard graphine is to make, and how expensive it is. I just love it when it pops up in threads and everyone swoons over the technical innovation, and completely discards the fact that it's going to be like 10+ years before we see any real use of graphine. [/QUOTE] If anything just knowing I was here to witness what happens with graphene interests me enough that I'm happy enough waiting just to see what this technology could bring. All it will take is some time, a brilliant mind, a breakthrough and an investment. Once it's affordable it's uses will surprise us, I don't think graphene is quite like anything else that we developed recently. It could be like the next biggest thing since we figured out fire or it could be nothing. The story makes the wait bearable.
[QUOTE=SGTNAPALM;46594958]Isn't it still incredibly toxic?[/QUOTE] It's toxic in a sense that breathing in or otherwise ingesting microscopic graphenene strands will absolutely rip your insides, causing them to become stuck in your tissue (like lungs), and that's really bad for you.
Fuck yeah! This is awesome! My story talks about people using a graphene hybrid for bodyarmor, so I'm stoked.
[QUOTE=Magman77;46596064]Toxic? No. Physically worse for you than asbestos if you inhale small flakes of it? Yes. It doesn't damage cell structure or poison you, but your body cannot get rid of it once it's inhaled.[/QUOTE] According to this: [url]http://www.gizmag.com/graphene-bad-for-environment-toxic-for-humans/31851/[/url] It causes damage to lung cells. And if the body can't remove it, it's just as bad as asbestos and can cause the same problems as asbestos from the constant tissue damage and irritation (ie. Cancer.)
[QUOTE=draugur;46595579]Recoil compensation exists in firearms for a reason. Beyond that you're wrong either way because it's about the fact that you're stopping a bullet within a set distance and time frame. To look at this with math. This means that with a completely "bullet proof" graphene material, you'll be looking at a stop time of at best 0.001 seconds, and a travel distance of maybe six inches. Doing the math, a 7.62x39r fmj 122gr round, would have an impact force of 1297005.97205118 lbf, (assuming 6 inches of distance to stop and .001 seconds of deceleration) you take this figure and divide it by the bullet's impact area. We'll be nice and say that it would be a 2 inch by 2 inch square, even though the bullet of a 7.62x39r would impact a much smaller area than that. Taking our lbf from earlier we divide it by the area of impact, 2 in^2, and we get the PSI impact on the body. 648502.98602559 PSI. Round this to 648503 PSI. This is assuming the person is wearing only the bullet proof layer and clothing. This is 44128 Atmospheres of pressure. The same as being 441.27 Km under the ocean. To put this bluntly, (hehe) there is a reason that modern body armour uses various methods to spread the impact across a very wide surface area to keep you from having your lungs literally explode in your body upon impact.[/QUOTE] I was up for 24 hours and the wires between momentum and pressure got crossed
So, not to be a negative nancy or nothing, but has anyone ever actually [I]made[/I] use of graphene for anything, or is it just some magic shit that scientists keep making up new uses for? With all the amazing shit it's meant to do, how simple its discovery was and all that, I'm starting to think maybe it's just a big ol' prank pulled on the world by the scientists. "Hah, you guys really believed that we invented a bulletproof two-dimensional one-atom-thick superconducter with a pencil and scotch tape? Fuckin' idiots!" [editline]29th November 2014[/editline] [QUOTE=draugur;46595579]Doing the math, a 7.62x39r fmj 122gr round, would have an impact force of 1297005.97205118 lbf, (assuming 6 inches of distance to stop and .001 seconds of deceleration) you take this figure and divide it by the bullet's impact area. We'll be nice and say that it would be a 2 inch by 2 inch square, even though the bullet of a 7.62x39r would impact a much smaller area than that. Taking our lbf from earlier we divide it by the area of impact, 2 in^2, and we get the PSI impact on the body. 648502.98602559 PSI. Round this to 648503 PSI. This is assuming the person is wearing only the bullet proof layer and clothing.[/QUOTE] T-.. There uh... There is no such thing as uh-... As 7.62x39r. The uh... The 'r' in 7.62 comes from 7.62x54r (or 7.62x53r if you're finnish), where it means rimmed. Just uh... Just saying...
[QUOTE=Riller;46598901] T-.. There uh... There is no such thing as uh-... As 7.62x39r. The uh... The 'r' in 7.62 comes from 7.62x54r (or 7.62x53r if you're finnish), where it means [B]rimmed[/B]. Just uh... Just saying...[/QUOTE] For the victim's pleasure?
[QUOTE=kimr120;46598940]For the victim's pleasure?[/QUOTE] I don't know, but the British .303 was wood tipped. This wood was sterilized, to avoid infections when you got shot.
[QUOTE=Riller;46598901]So, not to be a negative nancy or nothing, but has anyone ever actually [I]made[/I] use of graphene for anything, or is it just some magic shit that scientists keep making up new uses for? With all the amazing shit it's meant to do, how simple its discovery was and all that, I'm starting to think maybe it's just a big ol' prank pulled on the world by the scientists. "Hah, you guys really believed that we invented a bulletproof two-dimensional one-atom-thick superconducter with a pencil and scotch tape? Fuckin' idiots!" [editline]29th November 2014[/editline] T-.. There uh... There is no such thing as uh-... As 7.62x39r. The uh... The 'r' in 7.62 comes from 7.62x54r (or 7.62x53r if you're finnish), where it means rimmed. Just uh... Just saying...[/QUOTE] The problem is the scale, they are only able to do very tiny scale tests to see what the material can do, you will need thousands of layers and much larger dimensions to make something that could be actually used for something.
[QUOTE=Riller;46598975]I don't know, but the British .303 was wood tipped. This wood was sterilized, to avoid infections when you got shot.[/QUOTE][I] Oh, no.. better not let the gunshot wounds to the enemies torso get infected![/I] :downs:
Graphene body armor you say? I can dig it.
[QUOTE=draugur;46595059]So it solves the problem of the bullet piercing the skin, but what about the equally deadly massive physical impact?[/QUOTE] [url]https://www.youtube.com/watch?v=o5f1Fo4r4_I[/url] A bit of padding underneath and bullets aren't particularly deadly.
[QUOTE=EvacX;46599271][url]https://www.youtube.com/watch?v=o5f1Fo4r4_I[/url] A bit of padding underneath and bullets aren't particularly deadly.[/QUOTE] There's not a lot of momentum but it's concentrated in a very small area. Blunt trauma still occurs with existing body armor.
I wonder if graphene would be suitable for a gun barrel. :v:
-encase yourself in graphene -become immortal
[QUOTE=EvacX;46599271][url]https://www.youtube.com/watch?v=o5f1Fo4r4_I[/url] A bit of padding underneath and bullets aren't particularly deadly.[/QUOTE] Actually they are. The amount of trauma being focused into one area can cause inner-bleeding, and possibly even shattered bones which can fragment off and puncture lungs. Not to mention that nothing is stopping people from using exploding bullets like the ones used by the Germans and Soviets in WW2. [url=http://videos.full30.com/bitmotive/public/full30/v1.0/videos/inrange/82efb579fd3c93d177205966ef3d3c9d/854x480.mp4?_=1]Here's a video for the fun and understanding of how bad this is.[/url]
[QUOTE=godfatherk;46599511]-encase yourself in graphene -become immortal[/QUOTE] [img]https://pbs.twimg.com/media/BGRdPtICAAAgIaq.jpg[/img]
[QUOTE=draugur;46595579]Recoil compensation exists in firearms for a reason. Beyond that you're wrong either way because it's about the fact that you're stopping a bullet within a set distance and time frame. To look at this with math. This means that with a completely "bullet proof" graphene material, you'll be looking at a stop time of at best 0.001 seconds, and a travel distance of maybe six inches. Doing the math, a 7.62x39r fmj 122gr round, would have an impact force of 1297005.97205118 lbf, (assuming 6 inches of distance to stop and .001 seconds of deceleration) you take this figure and divide it by the bullet's impact area. We'll be nice and say that it would be a 2 inch by 2 inch square, even though the bullet of a 7.62x39r would impact a much smaller area than that. Taking our lbf from earlier we divide it by the area of impact, 2 in^2, and we get the PSI impact on the body. 648502.98602559 PSI. Round this to 648503 PSI. This is assuming the person is wearing only the bullet proof layer and clothing. This is 44128 Atmospheres of pressure. The same as being 441.27 Km under the ocean. To put this bluntly, (hehe) there is a reason that modern body armour uses various methods to spread the impact across a very wide surface area to keep you from having your lungs literally explode in your body upon impact. [editline]28th November 2014[/editline] Correct, but only because the bullet is allowed to continue traveling through your body because we are squishy flesh creatures.[/QUOTE] "I have a bullet proof shield the exact size of a bullet somewhere on my body. If you hit that, I'll be okay, and you'll be the laughing stock of me!"
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[QUOTE=godfatherk;46599511]-encase yourself in graphene -become immortal[/QUOTE] Just imagine... Graphene case for 3310
Surely to stop the small toxic fibres etc you could just paint it or cover in a thin layer of plastic?
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