Featured Research

from universities, journals, and other organizations

Developing Flexible Metal Composite

Date:
July 15, 2002
Source:
University Of California, San Diego
Summary:
Researchers at the University of California, San Diego (UCSD) Jacobs School of Engineering have received a $2.5 million Multidisciplinary University Research Initiative (MURI) grant to develop and test a metallic composite material capable of changing shape and then returning to its original form. The research is funded by the Office of Naval Research and may have applications for ships, submarines, and other vehicles and structures.

Researchers at the University of California, San Diego (UCSD) Jacobs School of Engineering have received a $2.5 million Multidisciplinary University Research Initiative (MURI) grant to develop and test a metallic composite material capable of changing shape and then returning to its original form. The research is funded by the Office of Naval Research and may have applications for ships, submarines, and other vehicles and structures.

"The use of shape memory alloys is very attractive because it enables large global recoverable, super-elastic deformations of up to six percent, a ten-fold over conventional elastic response. We hope to elicit even greater super-elastic performance by creating a hybrid composite alloy material" says Sia Nemat-Nasser, director of the Center of Excellence for Advanced Materials and principal investigator for the project.

Although shape-memory alloys have been around for over 30 years, Nemat-Nasser and his colleagues are adding a new spin by combining them with other non-metallic materials. He is working with Kenneth Vecchio, a professor of materials science at the School, and representatives from Caltech and the University of Washington, to use plates of shape-memory nickel-titanium (Ni-Ti) to sandwich shape-memory, super-elastic foams and rods embedded with hollow glass beads.

"This unique combination should allow for even greater flexibility and resilience in a very lightweight structure," explains Nemat-Nasser. "The hybrid material should provide optimal energy absorbing capability against high-velocity projectile impact, explosion-induced shock, or other dynamic events." In other words, the absorbing capability, in conjunction with the material's flexibility, could enable it to stop cracks and collateral damage by distributing the forces from impact.

To test the new alloy composite, Nemat-Nasser and his coworkers will use a variety of devices, including a full complement of novel Hopkinson bars, gas guns, high-speed cameras, and high-speed X-ray machines, as well other common materials processing and characterization equipment.

Nemat-Nasser is a member of the National Academy of Engineering (NAE), and most recently received the 2002 William Prager and Nadai Medals.


Story Source:

The above story is based on materials provided by University Of California, San Diego. Note: Materials may be edited for content and length.


Cite This Page:

University Of California, San Diego. "Developing Flexible Metal Composite." ScienceDaily. ScienceDaily, 15 July 2002. <www.sciencedaily.com/releases/2002/07/020715075621.htm>.
University Of California, San Diego. (2002, July 15). Developing Flexible Metal Composite. ScienceDaily. Retrieved October 2, 2014 from www.sciencedaily.com/releases/2002/07/020715075621.htm
University Of California, San Diego. "Developing Flexible Metal Composite." ScienceDaily. www.sciencedaily.com/releases/2002/07/020715075621.htm (accessed October 2, 2014).

Share This



More Matter & Energy News

Thursday, October 2, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Japan Looks To Faster Future As Bullet Train Turns 50

Japan Looks To Faster Future As Bullet Train Turns 50

Newsy (Oct. 1, 2014) Japan's bullet train turns 50 Wednesday. Here's a look at how it's changed over half a century — and the changes it's inspired globally. Video provided by Newsy
Powered by NewsLook.com
US Police Put Body Cameras to the Test

US Police Put Body Cameras to the Test

AFP (Oct. 1, 2014) Police body cameras are gradually being rolled out across the US, with interest surging after the fatal police shooting in August of an unarmed black teenager. Duration: 02:18 Video provided by AFP
Powered by NewsLook.com
Raw: Japan Celebrates 'bullet Train' Anniversary

Raw: Japan Celebrates 'bullet Train' Anniversary

AP (Oct. 1, 2014) A ceremony marking 50 years since Japan launched its Shinkansen bullet train was held on Wednesday in Tokyo. The latest model can travel from Tokyo to Osaka, a distance of 319 miles, in two hours and 25 minutes. (Oct. 1) Video provided by AP
Powered by NewsLook.com
Robotic Hair Restoration

Robotic Hair Restoration

Ivanhoe (Oct. 1, 2014) A new robotic procedure is changing the way we transplant hair. The ARTAS robot leaves no linear scarring and provides more natural results. Video provided by Ivanhoe
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:

Strange & Offbeat Stories


Space & Time

Matter & Energy

Computers & Math

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins