Featured Research

from universities, journals, and other organizations

New software 'lowers the stress' on materials problems

Date:
March 3, 2011
Source:
National Institute of Standards and Technology (NIST)
Summary:
Before you can build that improved turbojet engine, before you can create that longer-lasting battery, you have to ensure all the newfangled materials in it will behave the way you want. Now computer scientists have improved software that can take much of the guesswork out of tough materials problems like these.

Once provided with a microscope's image of a composite material (inset), OOF software can help analyze the effects of the material's internal structure on stress. Using OOF, researchers can identify the different substances (blue and gray areas) that make up the material and compute their response to stress or other effects, providing clues about how the overall sample will behave.
Credit: Langer, NIST

Before you can build that improved turbojet engine, before you can create that longer-lasting battery, you have to ensure all the newfangled materials in it will behave the way you want -- even under conditions as harsh as the upper atmosphere at supersonic speed, or the churning chemistry of an ion cell. Now computer scientists at the National Institute of Standards and Technology (NIST) have improved software* that can take much of the guesswork out of tough materials problems like these.

Related Articles


The software package, OOF (Object-Oriented Finite element analysis) is a specialized tool to help materials designers understand how stress and other factors act on a material with a complex internal structure, as is the case with many alloys and ceramics. As its starting point, OOF uses micrographs -- images of a material taken by a microscope. At the simplest level, OOF is designed to answer questions like, "I know what this material looks like and what it's made of, but I wonder what would happen if I pull on it in different ways?" or "I have a picture of this stuff and I know that different parts expand more than others as temperature increases -- I wonder where the stresses are greatest?"

OOF has been available in previous versions since 1998, but the new version (2.1) that the NIST team released on Feb. 16, 2011, adds a number of improvements. According to team member Stephen Langer, version 2.1 is the first dramatic extension of the original capabilities of the software.

"Version 2.1 greatly improves OOF's ability to envision 'non-linear' behavior, such as large-scale deformation, which plays a significant role in many types of stress response," says Langer. "It also allows users to analyze a material's performance over time, not just under static conditions as was the case previously."

Jet turbine blades, for example, can spin more efficiently with a layer of ceramic material sprayed onto their surfaces, but the ceramic layers are brittle. Knowing how these ceramic layers will respond as the metal blades heat up and expand over time is one of the many problems OOF 2.1 is designed to help solve.

"We've also included templates programmers can use to plug in their own details and formulas describing a particular substance," Langer says. "We're trying to make it easy for users to test anything -- we're not concentrating on any particular type of material."

Later this year, the team expects to enable users to analyze three-dimensional micrographs of a material, rather than the 2-D "slices" that can be analyzed at this point.

* OOF is available for free download at http://www.ctcms.nist.gov/oof/oof2/. The package runs on Unix™ like systems, including Linux, OS X and Linux-like environments within Windows.


Story Source:

The above story is based on materials provided by National Institute of Standards and Technology (NIST). Note: Materials may be edited for content and length.


Cite This Page:

National Institute of Standards and Technology (NIST). "New software 'lowers the stress' on materials problems." ScienceDaily. ScienceDaily, 3 March 2011. <www.sciencedaily.com/releases/2011/03/110302121844.htm>.
National Institute of Standards and Technology (NIST). (2011, March 3). New software 'lowers the stress' on materials problems. ScienceDaily. Retrieved December 22, 2014 from www.sciencedaily.com/releases/2011/03/110302121844.htm
National Institute of Standards and Technology (NIST). "New software 'lowers the stress' on materials problems." ScienceDaily. www.sciencedaily.com/releases/2011/03/110302121844.htm (accessed December 22, 2014).

Share This


More From ScienceDaily



More Matter & Energy News

Monday, December 22, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Touch-Free Smart Phone Empowers Mobility-Impaired

Touch-Free Smart Phone Empowers Mobility-Impaired

Reuters - Innovations Video Online (Dec. 21, 2014) A touch-free phone developed in Israel enables the mobility-impaired to operate smart phones with just a movement of the head. Suzannah Butcher reports. Video provided by Reuters
Powered by NewsLook.com
Building Google Into Cars

Building Google Into Cars

Reuters - Business Video Online (Dec. 19, 2014) Google's next Android version could become the standard that'll power your vehicle's entertainment and navigation features, Reuters has learned. Fred Katayama reports. Video provided by Reuters
Powered by NewsLook.com
AP Review: Nikon D750 and GoPro Hero 4

AP Review: Nikon D750 and GoPro Hero 4

AP (Dec. 19, 2014) What to buy an experienced photographer or video shooter? There is some strong gear on the market from Nikon and GoPro. The AP's Ron Harris takes a closer look. (Dec. 19) Video provided by AP
Powered by NewsLook.com
Obama: Better Ways to Create Jobs Than Keystone Pipeline

Obama: Better Ways to Create Jobs Than Keystone Pipeline

AFP (Dec. 19, 2014) US President Barack Obama says that construction of the Keystone pipeline would have 'very little impact' on US gas prices and believes there are 'more direct ways' to create construction jobs. Duration: 00:47 Video provided by AFP
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