HOME >> MEDICINE >> NEWS
Novel Ames Lab composite may replace depleted uranium

AMES, Iowa -- Armor-piercing projectiles made of depleted uranium have caused concern among soldiers storing and using them. Now, scientists at the U.S. Department of Energy's Ames Laboratory are close to developing a new composite with an internal structure resembling fudge-ripple ice cream that is actually comprised of environmentally safe materials to do the job even better.

Ames Laboratory senior scientist Dan Sordelet leads a research team that is synthesizing nanolayers of tungsten and metallic glass to build a projectile. "As the projectile goes further into protective armor, pieces of the projectile are sheared away, helping to form a sharpened chisel point at the head of the penetrator," said Sordelet. "The metallic glass and tungsten are environmentally benign and eliminate health worries related to toxicity and perceived radiation concerns regarding depleted uranium."

Depleted-uranium-based alloys have traditionally been used in the production of solid metal, armor-piercing projectiles known as kinetic energy penetrators, or KEPs. The combination of high density (~18.6 grams per cubic centimeter) and strength make depleted uranium, DU, ideal for ballistics applications. Moreover, DU is particularly well-suited for KEPs because its complex crystal structure promotes what scientists call shear localization or shear banding when plastically deformed. In other words, when DU penetrators hit a target at very high speeds, they deform in a "self-sharpening" behavior.

"It's very desirable to have this type of behavior together with high density, so that's why DU is used, but there has been strong global interest in replacing it since the start of the Gulf War in 1991." said Sordelet.

A popular replacement for DU is tungsten because at 19.3 grams per cubic centimeter, it's a little bit denser than DU. However, tungsten has a very simple crystal structure known as a body-centered cubic structure. "If I made the same solid
'"/>

Contact: Saren Johnston
sarenj@ameslab.gov
515-294-3474
DOE/Ames Laboratory
31-Jan-2007


Page: 1 2 3 4

Related medicine news :

1. Novel candidate biomarker for heart failure also strongly predicts risk of death
2. Novel treatments may help alleviate constipation, IBS in women
3. Novel catheter technique successfully patches holes in the heart
4. Novel anti-oxidant and anti-inflammatory agent shows effectiveness on key endpoints in trial
5. Novel computed imaging technique uses blurry images to enhance view
6. Novel brain areas associated with the recognition of gender, ethnicity and the identity of faces
7. Novel program enhances dementia caregivers quality of life
8. Novel gene therapy may lead to cure in hemophilia A patients
9. Novel therapy combinations gain ground in treating hepatitis
10. Novel stem cell technology leads to better spinal cord repair
11. Novel virus entry mechanism could lead to new drugs against poxviruses

Post Your Comments:
*Name:
*Comment:
*Email:
TAG: Novel Ames Lab composite may replace depleted uranium

(Date:5/22/2015)... VA (PRWEB) May 22, 2015 ... presented at the American Society of Clinical Oncology ... demonstrated improved survival rates for those patients who ... chemotherapy regimen of pemetrexed/cisplatin. Bevacizumab (Avastin® Genentech, Inc.) ... growth), and it is already routinely used to ...
(Date:5/22/2015)... 2015 Wimbledon Health Partners, the leading ... echocardiogram and NCV testing , is proud to ... All American National athlete, to the Wimbledon Athletics division. ... high level of testing and information it provides to ... athletic trainers, this way they can focus on the ...
(Date:5/22/2015)... 22, 2015 DMG Productions announces the ... to broadcast on Friday, May 29, 2015 at 7:30 ... , In this episode Innovations will explore Interstate Restoration, ... business quickly through disaster recovery and restoration. , Additionally, ... works collaboratively to develop and deliver training and education ...
(Date:5/22/2015)... 22, 2015 Ticket Down is a reputable ... Rangers NHL Eastern Conference Finals Tickets . All seating ... otherwise in the ticket listing. , For the first ... the top of the Eastern Conference. One of the original ... of ups and downs over the years, but the excitement ...
(Date:5/22/2015)... May 22, 2015 In an effort ... and Sons is offering to donate $5 dollars for ... AC unit or water softening system. Customers have their ... and Sons gets business; and the Special Olympics receives ... Special Olympics helps over 4.4 million athletes, and boasts ...
Breaking Medicine News(10 mins):Health News:Mesothelioma Research Organization Excited About Imminent Improvement to Standard of Care 2Health News:Wimbledon Athletics Recruits Team USA Athlete 2Health News:Wimbledon Athletics Recruits Team USA Athlete 3Health News:New Episode of Innovations Airing Friday, May 29, 2015 Via Discovery Channel 2Health News:Cheap Lightning vs Rangers NHL Eastern Conference Finals Tickets: Ticket Down Slashes Ticket Prices on New York Rangers vs Tampa Bay Lightning Eastern Conference Playoffs 2Health News:Cheap Lightning vs Rangers NHL Eastern Conference Finals Tickets: Ticket Down Slashes Ticket Prices on New York Rangers vs Tampa Bay Lightning Eastern Conference Playoffs 3Health News:Parker and Sons is Proud to Support the Special Olympics with Their Everybody Wins Program 2
(Date:5/21/2015)... Md. , May 21, 2015 ... open innovation competition designed to bring promising medical ... Heritage Provider Network (HPN) in collaboration with the ... for Advancing Innovation (CAI).  The winning teams were ... and live pitches and will move forward to ...
(Date:5/21/2015)... CITY, Calif. , May 21, 2015  Abaxis, ... manufacturing point-of-care blood analysis systems, announced today that ... investor relations, transitioning into the role of chief financial ... Stifel 2015 Dental & Veterinary Conference on Wednesday, May ... be held at The Peninsula Hotel in ...
(Date:5/21/2015)... , May 21, 2015 Frost & ... two-thirds of laboratories use commercial software or web-based ... represents uncaptured market share for suppliers. With 26 ... custom systems in-house, it is clear that various ... indicates that suppliers have a chance to gain ...
Breaking Medicine Technology:Neuro Startup Challenge selects 13 winning teams to launch startups for unlicensed NIH technologies to improve brain health 2Neuro Startup Challenge selects 13 winning teams to launch startups for unlicensed NIH technologies to improve brain health 3Neuro Startup Challenge selects 13 winning teams to launch startups for unlicensed NIH technologies to improve brain health 4Customers' Unmet Needs Create Opportunities for Laboratory Information Management System Suppliers to Transform the Industry 2Customers' Unmet Needs Create Opportunities for Laboratory Information Management System Suppliers to Transform the Industry 3Customers' Unmet Needs Create Opportunities for Laboratory Information Management System Suppliers to Transform the Industry 4
Cached News: