Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

A Close-up View of Materials as they Stretch or Compress

09.09.2015

A team of researchers has created a new tool to nondestructively characterize structural materials in unprecedented detail as they deform, which, in turn, could lead to aerospace components that are lighter and more tolerant to damage.

Materials scientists are busy developing advanced materials, while also working to squeeze every bit of performance out of existing materials. This is particularly true in the aerospace industry, where small advantages in weight or extreme temperature tolerance quickly translate into tremendous performance benefits.


Review of Scientific Instruments

This setup is used for high-energy diffraction microscopy experiments—it involves a rotational and axial motion system load frame insert in a conventional load frame along with near-field and far-field detectors. The loading axis is vertical, and the specimen and specimen grips rotate around the loading axis while the rest of the setup remains stationary.

The potential pay-offs motivated a team of researchers from the Air Force Research Laboratory, the Advanced Photon Source, Lawrence Livermore National Laboratory, Carnegie Mellon University and PulseRay to work together to pursue their shared goal of characterizing structural materials in unprecedented detail.

In a paper in Review of Scientific Instruments, from AIP Publishing, the group describes how they created a system to squeeze and stretch a material while at the same time rotating and bombarding it with high-energy synchrotron X-rays. The X-rays capture information about how the material responds to the mechanical stress.

“This required developing a loading system to enable the precise rotation of a sample while simultaneously and independently applying tensile or compressive axial loading,” explained Paul A. Shade, lead author and a materials research engineer for the Air Force Research Laboratory at Wright-Patterson Air Force Base.

Their approach included “developing and validating micromechanical models to help us understand the sources of failure in materials so that we can produce aerospace components that are lighter and more damage tolerant -- while also gaining a more complete understanding of their service lifetime capability,” Shade added.

The main significance of the team’s new tool is that “the RAMS load frame insert enables applying axial loads while the specimen is continuously rotated, which means that we can integrate near-field and far-field high-energy diffraction microscopy methods and microtomography with in situ mechanical testing,” said Shade. “This allows us to nondestructively characterize the microstructure and micromechanical state of a deforming material—providing critical validation data for microstructure-sensitive performance-prediction models.”

The materials community is interested in using the team's tool as part of an integrated computational materials engineering approach to design structural components -- which could help optimize materials properties and reduce uncertainty for given applications. The measurements that this tool enables can be used to develop new materials for turbine engines, car parts and industrial machinery, to name just a few applications.

“An important aspect is to develop trusted materials models whose performance has been validated at the appropriate length scale,” Shade said.

The next step for the team will be partnering with researchers at the Cornell High Energy Synchronous Source (CHESS), Cornell University and the Advanced Photon Source (APS) at Argonne National Laboratory to develop standalone RAMS load frames. “These instruments will be made available to the high-energy synchrotron X-ray community and, in fact, have already been used by many researchers and institutions,” Shade noted.

The team is currently working with CHESS and APS to develop elevated temperature and multi-axial loading capabilities. The RAMS load frame insert has also inspired the development of a tension in-vacuum furnace design for studying irradiated materials at APS that was developed in concert with the Nuclear Engineering Division at Argonne National Laboratory.

“We plan to host the datasets we collect from these experiments for others in the community to use -- especially to test new materials models,” Shade said. “In this manner, we’ll help propel the community to develop microstructure-sensitive materials models and provide the validation needed to push materials to the next level of performance.”

The article, “A rotational and axial motion system load frame insert for in situ high- energy x-ray studies,” is authored by Paul A. Shade, Basil Blank, Jay C. Schuren, Todd J. Turner, Peter Kenesei, Kurt Goetze, Robert M. Suter, Joel V. Bernier, Shiu Fai Li, Jonathan Lind, Ulrich Lienert and Jonathan Almer. It appears in the journal Review of Scientific Instruments on September 8, 2015. After that date, it can be accessed at: http://scitation.aip.org/content/aip/journal/rsi/86/9/10.1063/1.4927855 

The authors of this paper are affiliated with Air Force Research Laboratory, PulseRay, Argonne National Laboratory, Carnegie Mellon University and Lawrence Livermore National Laboratory.

ABOUT THE JOURNAL

The journal Review of Scientific Instruments, which is produced by AIP Publishing, presents innovation in instrumentation and methods across disciplines. See http://rsi.aip.org

Contact Information
Jason Socrates Bardi
+1 240-535-4954
jbardi@aip.org
@jasonbardi

Jason Socrates Bardi | newswise

Further reports about: AIP RAMS Review of Scientific Instruments materials physics

More articles from Materials Sciences:

nachricht Melting solid below the freezing point
23.01.2017 | Carnegie Institution for Science

nachricht An innovative high-performance material: biofibers made from green lacewing silk
20.01.2017 | Fraunhofer-Institut für Angewandte Polymerforschung IAP

All articles from Materials Sciences >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Quantum optical sensor for the first time tested in space – with a laser system from Berlin

For the first time ever, a cloud of ultra-cold atoms has been successfully created in space on board of a sounding rocket. The MAIUS mission demonstrates that quantum optical sensors can be operated even in harsh environments like space – a prerequi-site for finding answers to the most challenging questions of fundamental physics and an important innovation driver for everyday applications.

According to Albert Einstein's Equivalence Principle, all bodies are accelerated at the same rate by the Earth's gravity, regardless of their properties. This...

Im Focus: Traffic jam in empty space

New success for Konstanz physicists in studying the quantum vacuum

An important step towards a completely new experimental access to quantum physics has been made at University of Konstanz. The team of scientists headed by...

Im Focus: How gut bacteria can make us ill

HZI researchers decipher infection mechanisms of Yersinia and immune responses of the host

Yersiniae cause severe intestinal infections. Studies using Yersinia pseudotuberculosis as a model organism aim to elucidate the infection mechanisms of these...

Im Focus: Interfacial Superconductivity: Magnetic and superconducting order revealed simultaneously

Researchers from the University of Hamburg in Germany, in collaboration with colleagues from the University of Aarhus in Denmark, have synthesized a new superconducting material by growing a few layers of an antiferromagnetic transition-metal chalcogenide on a bismuth-based topological insulator, both being non-superconducting materials.

While superconductivity and magnetism are generally believed to be mutually exclusive, surprisingly, in this new material, superconducting correlations...

Im Focus: Studying fundamental particles in materials

Laser-driving of semimetals allows creating novel quasiparticle states within condensed matter systems and switching between different states on ultrafast time scales

Studying properties of fundamental particles in condensed matter systems is a promising approach to quantum field theory. Quasiparticles offer the opportunity...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

Sustainable Water use in Agriculture in Eastern Europe and Central Asia

19.01.2017 | Event News

12V, 48V, high-voltage – trends in E/E automotive architecture

10.01.2017 | Event News

2nd Conference on Non-Textual Information on 10 and 11 May 2017 in Hannover

09.01.2017 | Event News

 
Latest News

Arctic melt ponds form when meltwater clogs ice pores

24.01.2017 | Earth Sciences

Synthetic nanoparticles achieve the complexity of protein molecules

24.01.2017 | Life Sciences

PPPL physicist uncovers clues to mechanism behind magnetic reconnection

24.01.2017 | Physics and Astronomy

VideoLinks
B2B-VideoLinks
More VideoLinks >>>