from the Who's-afraid-of-the-big-bad-bomb? dept.
Armor-Piercing Bullet Turned to Dust When Fired at Composite Metal Foam
Essentially a metal sponge consisting of hollow metal beads within solid metal, composite metal foam (CMF) generally retains some physical properties of its base materials. While its defining characteristic is ultra-high porosity, CMF boasts 5 to 6 times greater strength as well as over 7 times higher energy absorption than previously developed metal foams. Typically created by melting aluminum around hollow metal spheres, it is impressively 70% lighter than sheet metal and 80 times more energy absorbent than steel.
The foam is claimed to be non-toxic, resistant to radiation, fire and heat resistant.
Youtube video (13 seconds) https://www.youtube.com/watch?v=lWmFu-_54fI
Related video (2:30) demonstrates automotive and other applications https://www.youtube.com/watch?v=7uE_f9rXLlk
Slightly different coverage at https://newatlas.com/metal-foam-bullets/42731/
Another Youtube video, demonstrating an explosion - https://youtu.be/yMVEQh5Akcc
(Score: 3, Interesting) by driverless on Tuesday April 10 2018, @11:52PM (10 children)
Anyone know what the gun/round is? Breitbart (ugh) claims it's a "7.62 x 63 millimeter M2 armor piercing projectile" but shows a photo of a pistol firing it, I doubt that's chambered for 30-06.
I'd also hate to find out what happens when you start breathing in a mixture of aluminiumm, lead, copper, and whatever else may be in there, dust.
Having said that, it is pretty cool...
(Score: 2, Interesting) by Runaway1956 on Wednesday April 11 2018, @02:27AM (4 children)
I had some problems with that "armor piercing" bit as well. The first thing I heard about this made the claim that the armor had stopped a round from an M2 30 caliber machine gun. But, I thought that a Ma Deuce was fifty caliber. The video may or may not be related to the headline claim, or the claim that I heard on the radio.
Regardless of which rounds were tested, or when, or where, or which of them were captured in slow motion video - the claims are pretty spectacular. The video tends to lend credence to the claims, even if the video shows a small caliber pistol round being fired.
Of course, it must be remembered that the guy who is hit with a high energy projectile isn't going to be feeling real good. No matter how indirectly, he still has to absorb that energy just to stay on his feet. He's still going to have purple splotches and aching ribs, assuming he's hit in the chest. And, unless they can make transparent armor, the head is still exposed.
The more mundane uses of this armor are still interesting. The video of this stuff behind a car bumper is very interesting!
(Score: 2) by driverless on Wednesday April 11 2018, @02:58AM (3 children)
M2 in this case refers to a WWII-vintage 30-06 cartridge. I'm assuming this is some standardised armour test round, since they talk about "National Institute of Justice standards".
(Score: 0) by Anonymous Coward on Wednesday April 11 2018, @07:36AM (2 children)
Maybe, instead, it was a Youtube stunt, where the guy holds a thick book in front of hisself, and his girlfriend and baby momma blows him to kingdom come and pushing up the daisies, pining for the fiords, not understanding physics. So, Desert Eagle, .357? Or the .44 Mag? Do they make one in .50 cal? Custom Pistola Cartridges for the Insane ammosexuals? There has got to be a website! (Seriously, I am sorry for their kids! The deserved better parents.)
(Score: 0) by Anonymous Coward on Wednesday April 11 2018, @08:05PM (1 child)
Tell us the truth behind your ammophobia. Was it a girl you loved? Did she come out as an ammosexual? Was it too much for you to accept? And then you found her fursuit! Love can be so cruel, alas.
(Score: 0) by Anonymous Coward on Thursday April 12 2018, @02:01AM
Yeah, but the 30-06 is not really a WWII era round, the '06 refers to 1906, which is a few years before WWI. It is a change from the standard denomination of black powder cartridge rounds, which usually followed a caliber-grains of powder-grains of projective naming convention. Something like the .45-70 started out this way, the .45-70-500, also known as . 45-70 Government, which was developed at the U.S. Army's Springfield Armory for use in the Springfield Model 1873, which is known to collectors as the "trapdoor Springfield", a converted muzzleloader. Ah, for the days when an assault weapon was a breech-loading single shot! Of course, didn't work out so well for the US Calvary at Little Bighorn.
What worries me is that so many ammosexuals seem to be very ignorant about guns, and just seem to "support" them to piss off people who are more sane and intelligent than they are, much the way they vote for Trump, as kind of a "fuck you!" to the world in revenge for them having been born so incapable of erudition.
In any case, I find the Sharps .45-90, or even the .45-120-550 to be a better round, in the rather smallish .45 caliber. Normally, .54 is the smallest bore I will fire.
(Score: 2) by Snotnose on Wednesday April 11 2018, @02:38AM (4 children)
Think I'd rather breath that dust for a few seconds than deal with a hole in my chest.
When the dust settled America realized it was saved by a porn star.
(Score: 3, Interesting) by driverless on Wednesday April 11 2018, @02:51AM (3 children)
Although this is going to sound pretty cynical and callous, I think a lot of people would rather have a hole in someone else's chest than the whole squad later die of lung cancer or lead-based CNS disorders from breathing assorted metal/heavy metal dust.
(Score: 2) by Nerdfest on Wednesday April 11 2018, @03:01AM (1 child)
Then perhaps dust masks? Many troops already wear face coverings anyway.
(Score: 0) by Anonymous Coward on Wednesday April 11 2018, @07:51AM
How will we be able to tell the good guys from the terrorists? ^.^
(Score: 2) by Snotnose on Wednesday April 11 2018, @01:21PM
If your tactics are resulting in that much dust then methinks your tactics suck.
When the dust settled America realized it was saved by a porn star.
(Score: 3, Funny) by The Mighty Buzzard on Tuesday April 10 2018, @11:52PM (10 children)
#smake martyb
#smake Runaway1956
My rights don't end where your fear begins.
(Score: 3, Insightful) by bob_super on Wednesday April 11 2018, @12:47AM (6 children)
Considering what wikitionary returns for smake [wiktionary.org], whatever happens on IRC should stay on IRC, I reckon.
(Score: 0) by Anonymous Coward on Wednesday April 11 2018, @07:39AM
Oh, you have no idea! Seriously, no idea! And you should probably not want to have one.
(Score: 2) by The Mighty Buzzard on Wednesday April 11 2018, @10:28AM (1 child)
How dare you not wholeheartedly endorse our weirdness!? TwitterMob, attack the literally Hitler Nazi!
My rights don't end where your fear begins.
(Score: 0) by Anonymous Coward on Wednesday April 11 2018, @03:38PM
You must be snapping, ordering people to attack yourself?
(Score: 2) by Freeman on Wednesday April 11 2018, @12:51PM (1 child)
So, now it's ok for me to use smake in scrabble?
Joshua 1:9 "Be strong and of a good courage; be not afraid, neither be thou dismayed: for the Lord thy God is with thee"
(Score: 2) by bob_super on Wednesday April 11 2018, @04:16PM
Sure, but "lynx" is more points.
(Score: 2) by All Your Lawn Are Belong To Us on Wednesday April 11 2018, @04:30PM
Were they flying high on IRC?
I'd hate to face Smakes on a Plane.
This sig for rent.
(Score: 0) by Anonymous Coward on Wednesday April 11 2018, @06:43AM (2 children)
Hi there and sorry to barge in like this...
Just wanted to make the case for linking the most recent journal entries on the right hand side of the main page to the actual post and not the journal itself. Why this matters? Because currently we get very strange link colors as if we had already visited some new journal posting while the only thing we have visited in the journal itself. So basically a case of link text saying A while the link points to B leading to general mayhem.
Thank you've you've been a wonderful audience! (pun intended)
(Score: 2) by The Mighty Buzzard on Wednesday April 11 2018, @10:20AM (1 child)
That's been on my personal wishlist for a while now, yep.
My rights don't end where your fear begins.
(Score: 0) by Anonymous Coward on Wednesday April 11 2018, @12:09PM
Great! <3
(Score: 3, Funny) by chromas on Tuesday April 10 2018, @11:53PM (2 children)
Old! And the source? #FakeNews! Even though it's apolitical. I'm totally leaving Soylent if this keeps up.
(Score: 1, Informative) by Anonymous Coward on Wednesday April 11 2018, @01:40AM
Well, what do you expect from desperate snowflakes. They're obviously looking for something to shield them from bullets that will be coming at them when Mueller comes after them.
(Score: 2, Redundant) by realDonaldTrump on Wednesday April 11 2018, @02:03AM
Believe me, @BreitbartNews [twitter.com] wasn't great two years ago. Because Sloppy Steve was in charge. The Site is TREMENDOUSLY better now. It's not a guns thing, it's a MENTAL HEALTH thing.
(Score: 2) by Arik on Tuesday April 10 2018, @11:53PM (3 children)
Also I wonder what it's like to work with, how would you cut and shape it?
Sounds like a fun substance to experiment with.
If laughter is the best medicine, who are the best doctors?
(Score: 2) by c0lo on Wednesday April 11 2018, @01:32AM
Not by shooting bullets at it, no.
(grin)
https://www.youtube.com/watch?v=aoFiw2jMy-0 https://soylentnews.org/~MichaelDavidCrawford
(Score: 2) by Runaway1956 on Wednesday April 11 2018, @02:33AM (1 child)
It seems to be shaped in a mold. Fill the mold full of these tiny steel hollow spheres, then pour in the aluminum. Some machining after the molding, yeah, but basically you have molded parts.
Cutting shouldn't be a problem. Any saw blade that can cut aluminum can probably cut this stuff. Expect some fouling, due to the little steel balls. They don't get very specific about the size of the hollow spheres, but I expect that your cuts will be a little rough. Unlike ceramic or similar armor, this stuff isn't especially hard. It relies on the little hollow spheres being crushed to absorb and distribute energy.
(Score: 2) by Arik on Wednesday April 11 2018, @03:37AM
If laughter is the best medicine, who are the best doctors?
(Score: 2) by looorg on Tuesday April 10 2018, @11:55PM (1 child)
Anything that can make body armor better and lighter tho should be most welcome. But when they say dust do they mean dust or tiny but very annoying shrapnel? Still most likely, and in most situations, much better then being penetrated by a bullet.
... or something great for smuggling things past an x-ray machine. She will soon receive a lot more funding from some unknown benefactor(s) south of the border.
(Score: 5, Interesting) by SacredSalt on Wednesday April 11 2018, @01:02AM
Coat it in rubberized antispalling compound like other good armor, and the dust and spall issue will become much less. The trick to beating most armor is smaller grain bullets and much higher velocities, or burning your way through. Aluminum based armors do have their issues with incendiary rounds -- its what makes fighting in a LAV a hell of a lot less fun than it looks like. So the military applications might be a lot less than ideal.
(Score: 2, Funny) by Anonymous Coward on Wednesday April 11 2018, @12:11AM
Brietbarf on bullets? Two years old? We could, and I'm just spit-balling here, an aristarchus submission that would be much less fake newsy. Just saying.
(Score: 5, Interesting) by ilPapa on Wednesday April 11 2018, @03:59AM
I know, let's make schoolbooks out of this stuff. Problem solved.
Then, when the next second amendment activist Trump supporter decides to shoot up a school, the kids will have a better chance of survival.
You are still welcome on my lawn.
(Score: -1, Funny) by Anonymous Coward on Wednesday April 11 2018, @07:14AM
So,the miracle foam turns the armor-piercing round into dust, eh? Dust that is traveling at 1700fps? In a radius of, oh, .85 inches?
So the entire kinetic load of the projectile will still proceed through your torso, with some accompanying "metal foam", and you can claim disability for the rest of your life, and vote for Trump, like anyone shot while wearing invincible body armor would? I admit, I am confused, and more than ever of the opinion that when the US sends its merc murderers overseas, they should be executed post operation, so they do not come home and, for instance, massacre a church in Texas. Cheaper than the costs of real psychological care. Just put them down. I mean, for example, just look at Runaway. We, and he, would all be better off.
(Score: 2, Informative) by Anonymous Coward on Wednesday April 11 2018, @08:43AM
This is old news. Very old. The first video is from the dark ages of 240p.
(Score: 1, Funny) by Anonymous Coward on Wednesday April 11 2018, @08:44AM
It's in the Bible!
"Ashes to ashes,
Bullets to dust."
Something like that. Book of Armaments, Chapter Three?
Could've swore it was part of the Book of Islam, according to the Runway2566 the infidel and coward. Book of Armaments, Chapter 2, Verses 9-21 [arstechnica.com]
(Score: 0) by Anonymous Coward on Wednesday April 11 2018, @11:16AM
if there are two objects, say a square column and contoured one and both are made from the same material, then
the extra "strength" isn't because of the shape/contour but rather because the contoured column is lighter.
it means that the contoured column is lighter and thus doesn't have to carry "itself" as much.
there's no magic, as far as i can tell in the shape of a object that adds extra "strength". it's just that one
can calculate the stresses and then omit the material parts in a square column that don't contribute (much)
to the desired strength and thus make the column lighter and the difference can be added to the weight (strength)
that wants to be supported...
(Score: 2, Interesting) by Anonymous Coward on Wednesday April 11 2018, @01:18PM (1 child)
What next, St*rmfront?
(Score: 2) by Phoenix666 on Wednesday April 11 2018, @10:16PM
Worse, CNN.
Washington DC delenda est.