Composite metal foams (CMFs) are tough enough to turn an armor-piercing bullet into dust on impact. Given that these foams are also lighter than metal plating, the material has obvious implications for creating new types of body and vehicle armor – and that’s just the beginning of its potential uses.
Afsaneh Rabiei, a professor of mechanical and aerospace engineering at NC State, has spent years developing CMFs and investigating their unusual properties. The video seen here shows a composite armor made out of her composite metal foams. The bullet in the video is a 7.62 x 63 millimeter M2 armor piercing projectile, which was fired according to the standard testing procedures established by the National Institute of Justice (NIJ). And the results were dramatic.
“We could stop the bullet at a total thickness of less than an inch, while the indentation on the back was less than 8 millimeters,” Rabiei says. “To put that in context, the NIJ standard allows up to 44 millimeters indentation in the back of an armor.” The results of that study were published in 2015.
But there are many applications that require a material to be more than just incredibly light and strong. For example, applications from space exploration to shipping nuclear waste require a material to be not only light and strong, but also capable of withstanding extremely high temperatures and blocking radiation.
Last year, with support from the Department of Energy’s Office of Nuclear Energy, Rabiei showed that CMFs are very effective at shielding X-rays, gamma rays and neutron radiation. And earlier this year, Rabiei published work demonstrating that these metal foams handle fire and heat twice as well as the plain metals they are made of.
Now that these CMFs are becoming well understood, there could be a wide array of technologies that make use of this light, tough material. Armor, if you’ll forgive the pun, barely scratches the surface.
The Latest on: Composite metal foams
via Google News
The Latest on: Composite metal foams
- Composite metal foam stops .50-caliber rounds as well as steelon August 13, 2019 at 1:13 pm
A hard armor system crafted from composite metal foam takes hits as well as conventional steel armor, but at half the weight, a development that could potentially help revolutionize the design of ...
- Metal foam ‘sandwich’ is bendy but strongon July 15, 2019 at 5:00 pm
But Nikhil Gupta, associate professor in the NYU School of Engineering’s department of mechanical and aerospace engineering, and his colleagues are the first to develop a metal matrix syntactic foam ...
- Lightweight, Composite Foam Material Can Stop Bullets As Well as Steelon July 5, 2019 at 2:43 am
Now researchers at North Carolina State University have developed a lightweight alternative to metal armor in a composite metal foam (CMF) that can stop ball and armor-piercing .50 caliber rounds, as ...
- Armor: Foaming It Inon June 26, 2019 at 2:37 am
June 26, 2019: Three years after it was realized the CMF (Composite metal foam) could provide superior protection against bullets and be much lighter as well, the theory was put to the test and it ...
- Bullet-proof metal foam as effective as steel at half the weighton June 11, 2019 at 5:18 am
The researchers have demonstrated new vehicle armor that is made up of a composite metal foam (CMF) and can stop .50 caliber rounds in both ball and armor-piercing varieties. The big benefit of CMF ...
- Scientists have built a foam armor that stops bullets as well as heavy steelon June 10, 2019 at 6:36 am
They're calling it Composite Metal Foam, or simply CMF. Their findings, published in the journal Composite Structures last month, describes a new kind of armor that's lightweight, flexible and can ...
- A New Metal Foam Is As Bulletproof As Heavy Steel Armour, Researchers Sayon June 8, 2019 at 7:00 am
Composite metal foam—or CMF, for short—is a material made from hollow metallic spheres that are surrounded by a matrix that can be made from various types of metals, including titanium or even alloys.
- Revolutionary lightweight FOAM stops an armour-piercing .50 calibre bulleton June 6, 2019 at 7:13 am
Incredible footage captures the moment a 'foam' made from hollow metal spheres obliterates an armour-piercing .50 calibre bullet fired at it. The composite metal foam (CMF) is just as competent at ...
- Metal foam stops .50 caliber rounds as well as steel -- at less than half the weighton June 5, 2019 at 1:06 pm
Researchers have demonstrated that vehicle armor using composite metal foam (CMF) can stop ball and armor-piercing .50 caliber rounds as well as conventional steel armor, even though it weighs less ...
via Bing News