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:2/22/2017)... (PRWEB) , ... February 22, 2017 , ... Pet obesity ... and 54% of dogs, according to the Association for Pet Obesity Prevention (APOP). During ... key pet food issues such as the benefits of corn and grains, value of ...
(Date:2/22/2017)... ... 22, 2017 , ... FPS is a nonprofit mental health ... in 1977, our organization was at the forefront in working with veterans with ... were evident and served as the catalyst for the establishing the agency. , ...
(Date:2/22/2017)... ... February 22, 2017 , ... In today’s world, ... solutions on the market, it is easy to start feeling frustrated and confused. ... offers a complimentary security consultation. , Home Security Hardware Choices, There are innumerable ...
(Date:2/22/2017)... ... February 22, 2017 , ... Alto-Shaam is pleased to announce ... Oven offers up to four ovens in one. Control temperature, fan speed and ... evenness in cooking. Alto-Shaam has partnered with Appliance Innovation to introduce this game-changing ...
(Date:2/22/2017)... CALIFORNIA (PRWEB) , ... February 22, 2017 , ... ... the pipeline and the number of African American/Black students who want to become ... residents to pursue their careers as physicians in the Oakland/San Francisco Northern California, ...
Breaking Medicine News(10 mins):
(Date:2/22/2017)... , Feb. 22, 2017   Protein Sciences ... of Flublok® Influenza Vaccine , announced today that ... for Influenza Vaccine Introduction (PIVI) and the Mongolian Ministry ... impacts of the flu.  The doses of Flublok have ... Mongolia for health care workers, pregnant ...
(Date:2/22/2017)... A research report by Arcview Market Research focused on ... continuously changing landscape of the legal market reveals that regulated cannabis ... America , a 30% increase from 2015. According to the ... year 2021 representing a 26 percent compound annual growth rate. The ... and Canada is gradually becoming more mainstream ...
(Date:2/22/2017)...  Tri-Source Pharma announced today the completion of its ... appointed positions were added to form an executive team ... , in the implementation and administration of its newly ... consolidated subsidiary companies. Effective as ... of the following eight members reporting to Robert ...
Breaking Medicine Technology:
Cached News: