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Deflexion, developed by Dow Corning, is a material that is normally soft. When something hits it, the material instantly hardens, and then returns to its previous flexibility. So far, it’s being used to make body armor for athletes, such as motorcycle riders and rodeo competitors. Dow Corning says:
It can be stylishly incorporated into a garment such as a base layer shirt, it can be designed to create protective equipment, like a soccer shin guard, or it can be incorporated into protective cases for delicate equipment. Because this high performance fabric is flexible, it can be cut and sewn directly into clothing, eliminating the need to insert uncomfortable padding. It can be layered, so garments can be customized with increased levels of protection for specific areas.
Link via DVICE | Image: Dow Corning, Screenshot: Core77
Four years ago, we wrote that the US Army was developing body armor that is normally a liquid, but turns into a solid when it’s hit. Britain’s military researchers have come up with something similar, but now there’s clear evidence that it can withstand the impact of a bullet:
The BAE scientists describe it as “bullet-proof custard”.
“It’s very similar to custard in the sense that the molecules lock together when it’s struck,” explained Stewart Penny, business development manager in charge of materials development at the company.[...]
“In standard bullet-proof vests, we use thick, heavy, layered plates of Kevlar that restrict movement and contribute to fatigue,” said Mr Penny.
In the tests, scientists used a large gas gun to fire ball bearing-shaped metal bullets at over 300 metres per second into two test materials – 31 layers of untreated kevlar and 10 layers of kevlar combined with the shear-thickening liquid.
“The Kevlar with the liquid works much faster and the impact isn’t anything like as deep,” he explained.
Link via DVICE | Photo by Flickr user Shanti, shanti used under Creative Commons license
Crysomallon squamiferum, also known as the scaly-foot gastropod, was discovered at the bottom of the Indian Ocean in 1999 at a depth of 2420 metres. Its shell is remarkably strong because it is flexible, allowing it to absorb blows from predators and dissipate their energy, rather than shatter:
For example, the shell’s outermost layer consists of strong particles of iron sulphide created in the hydrothermal vents, each around 20 nanometres across, embedded in a soft organic matrix secreted by the snail. This structure is designed to crack when hit, but in a way that absorbs energy.
Cracks spread only by fanning out around the iron sulphide particles. This “microcracking” not only absorbs energy, it also ensures that larger cracks do not form. What’s more, the particles of iron sulphide may blunt and deform intruding claws, the study suggests.
Scientists who have studied the creature suggest that it might be possible to duplicate the structure synthetically for armor or pipelines.
Link via Popular Science | Photo: JAMSTEC
The Canadian firm K9 Storm offers sophisticated physical protection for dogs out in the field. In Popular Science, Clay Dillow writes:
The Intruder not only protects canines with a sturdy flak jacket enveloping their vital organs, but it sports a wireless camera so the handler can see what the dog sees, as well as speakers so the handler can issue audio commands. As a result, dogs can operate up to 300 yards from their handlers, a big advantage in emergency situations where dogs are often sent into areas deemed too unsafe for humans to operate.
Although the suits cost $20,000 per unit, the enormous expense of training and maintaining a high-end military or police dog may justify the expenditure.
Link | Photo: K9 Storm
