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:


(Date:10/13/2017)... (PRWEB) , ... October 13, 2017 , ... Apple ... care services, staged a mock evacuation of the facility as part of a disaster ... Fire Department, Echo Hose EMS and Shelton City Emergency Manager, as well as the ...
(Date:10/13/2017)... , ... October 13, 2017 , ... Global Healthcare Management’s ... Alexandria Park in Milford, NJ. This free event, sponsored by Global Healthcare Management’s ... The fun run is geared towards children of all ages; it is a ...
(Date:10/13/2017)... ... October 13, 2017 , ... “The Journey: From the ... danger possible to save lost souls in the Philippines. “The Journey: From the Mountains ... a dedicated teacher of the Bible. She has taught all ages and currently teaches ...
(Date:10/12/2017)... ... October 12, 2017 , ... Planet Fitness, one of the largest and ... plans to open a flagship location in Covington, LA at 401 N. U.S. Highway ... store next to Office Depot in the Holiday Square shopping center. Its location allows ...
(Date:10/12/2017)... ... 2017 , ... Asante, a nationally recognized health system in ... existing home health joint venture through an agreement, effective October 1, 2017, to ... home health company with Asante, delivering clinically integrated care, for the past eight ...
Breaking Medicine News(10 mins):
(Date:10/10/2017)... -- NDS received FDA 510(k) clearance in May 2017 for its highly ... designed for endoscopy environments. An innovative secondary monitor solution, ZeroWire ... support the improvement of patient outcomes, procedural efficiency, and the lowering ... ... ...
(Date:10/4/2017)... 4, 2017  South Korean-based healthcare product Development Company ... "cprCUBE" on Kickstarter. The device will educate the user ... with better efficiency compared to the dated and pricey ... on efficacy of the compression for a more informed ... goal to raise $5,000. ...
(Date:10/2/2017)... 2017  Eli Lilly and Company (NYSE: ... third quarter of 2017 on Tuesday, October 24, 2017. ... day with the investment community and media to further ... call will begin at 9 a.m. Eastern time. Investors, ... webcast of the conference call through a link that ...
Breaking Medicine Technology:
Cached News: