Body armor

1
There was some discussion of body armor here: http://www.theliberalgunclub.com/phpBB3 ... 40&t=35800

But that was originally policy oriented, as in "should civilians be allowed to own and wear body armor?"

It digressed into a discussion of the technical aspects of body armor and the possibility of cheap, DIY body armor (ceramic tile, metal plate, some type of penetration resistant fabric or padding).

I started this new thread on body armor to discuss technical aspects. The article below is about a new type of "bullet shattering" plate material made of a metallic foam, which is composed of hollow beads embedded within a plate of another metal. I don't understand why the hollow cavities would increase the strength of the material, unless this allows very limited compression. They also don't say what it is made out of, but likely a dense metal. The video is impressive.

Watch this metal foam turn an armor-piercing bullet into dust
http://www.techspot.com/news/64392-watc ... -dust.html
"When and if fascism comes to America... it will be called, of course, ‘Americanism'." - Halford Luccock
"Liberty without socialism is privilege and injustice. Socialism without liberty is slavery and brutality."
— Mikhail Bakunin

Re: Body armor

2
This article provides more technical details:

Metallic Foams Annihilate Bullets, Block Radiation
http://blogs.discovermagazine.com/d-bri ... s-bullets/

"In tests with armor-piercing bullets, a one-inch layer of the material stopped the projectile in its tracks while allowing only an 8-millimeter indentation on the other side."

"But it all comes down to the bubbles, says Rabiei. By keeping the diameter of the spheres constant, she says, any stress will impact them equally, increasing the material’s strength. The spherical shape of the bubbles confers strength as well, by distributing the force evenly around the structure. Where other metal foams buckle as their bubbles collapse, Rabiei’s maintains its structure thanks to the uniform nature of the components."
"When and if fascism comes to America... it will be called, of course, ‘Americanism'." - Halford Luccock
"Liberty without socialism is privilege and injustice. Socialism without liberty is slavery and brutality."
— Mikhail Bakunin

Re: Body armor

3
SilasSoule wrote:There was some discussion of body armor here: http://www.theliberalgunclub.com/phpBB3 ... 40&t=35800

But that was originally policy oriented, as in "should civilians be allowed to own and wear body armor?"
To be more precise that thread was specifically about policy with regard to bulletproof vests. Also, police can wear "body armor," and they are civilians. So any distinction could have been made more clearly.

With regard to the topic--technical aspects of body armor, Rabiei's foam in particular--the comment about a pneumatically-launched or blank-powered lead or steel pellet was interesting. Perhaps .22 short is the projectile for which the commenter was looking.

The article does briefly explain why the cavities work.
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Re: Body armor

5
CDFingers wrote:Leave us not forget Tactical Depends.

Image


We now return you to your regularly scheduled program.

CDFingers
People pooh pooh it until they face a deadly threat and have to evacuate their bowel.
Glad that federal government is boring again.

Re: Body armor

6
Here is another article with more technical details:

"Researchers with North Carolina State and the US Army Research, Development and Engineering Center have combined multiple bullet-stopping materials into a single piece of armor. With a thickness of just 25 millimeters, the armor consists of "ceramics as the strike face, composite metal foam processed by powder metallurgy technique as a bullet kinetic energy absorber interlayer, and aluminum 7075 or Kevlar™ panels as backplates," according to the 2015 study."

http://www.csmonitor.com/Technology/201 ... -after-all
"When and if fascism comes to America... it will be called, of course, ‘Americanism'." - Halford Luccock
"Liberty without socialism is privilege and injustice. Socialism without liberty is slavery and brutality."
— Mikhail Bakunin

Re: Body armor

7
Re-posting this here since it's a keeper:

Ziplock bag filled with gravel and wrapped with duct tape stops semi-penetrating rifle bullets.

https://www.youtube.com/watch?v=_H6mOlHVUmM

Wonder if you could use a thinner layer of gravel and back it up with a high density plastic cutting board, and then bound them together with the duct tape? What if you then wrapped that in several layers of denim or canvas?

Next time I'm in the back in the states I'll have to play around with it.
"When and if fascism comes to America... it will be called, of course, ‘Americanism'." - Halford Luccock
"Liberty without socialism is privilege and injustice. Socialism without liberty is slavery and brutality."
— Mikhail Bakunin

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