Quasar Systems

Magnaflux Quasar RUSpec

RU Spec II Low_1.jpg

The Magnaflux Quasar Resonant Ultrasound Spectrometer (RUSpec) is an integrated system for measuring material elastic constants and associated material properties. As an implementation of resonant ultrasound spectroscopy (RUS), the RUSpec does this by iteratively changing fundamental elastic constants in order to match predicted resonance patterns with measured patterns for a given material sample. (See FAQ)

Resonant Ultrasound Spectrometer (RUSpec)

Features

Measurements - All dynamic properties are determined by one set of measurements for isotropic materials (See FAQ) including:
  • Shear Modulus
  • Young's Modulus
  • Bulk Modulus
  • Poisson's Ratio
  • Density
  • Longitudinal and Shear Velocities

Accuracy - High accuracy (greater than or equal to 0.1%) for large and small sample sizes. (See FAQ)

Testing Efficiency - Determines all independent elastic constants with one set of measurements. Can be used for isotropic, cubic, hexagonal, tetragonal, and orthorhombic structures.

Speed - Rapid determination of elastic constants vs. temperature. (For other than room temperature ranges see FAQ)

 

RUSpec Measures

  • Resonant spectra for hard materials (metals, ceramics and some composites) and calculates independent Cij for rectangular parallelepipeds and cylinders. (See FAQ for additional detail)
  • Sample sizes from millimeters to several centimeters.
  • Within a temperature range from liquid helium to 1850+ degrees C.

The RUSpec product includes:

  •   RUSpec measurement system
  •   RPR, CYL, RU Spec, CYLModel, and RPModel software
  •   MicroNest or Universal Nest (optional)
  •   Extended length alumina tip transducers for high temperature or cryogenic measurements (Optional - Special Order)

RUSpec Installations

RUSpec units have been sold to research laboratory institutes and research and development facilities worldwide, including:

  • Aramco, Saudi Arabia
  • Argentina National Atomic Energy Commission, Argentina
  • Benedict College, USA
  • Boston College, USA
  • Clemson University, USA
  • Johns Hopkins University, USA
  • Korea Atomic Energy Research Institute, Republic of Korea
  • Korea Research Institute of Standard and Science, Republic of Korea
  • Los Alamos National Laboratory, USA
  • Michigan State University, USA
  • National Institute of Standards and Technology (NIST), USA
  • Oak Ridge National Laboratory, USA
  • Rollins College, USA
  • Texas A & M University, USA
  • Toray Engineering Company, Japan
  • University of Alabama at Birmingham, USA
  • University of California at Los Angeles, USA
  • University of Tokushima, Japan
  • University of Virginia, USA
  • University of Wisconsin, USA
  • University of Zaragosa, Spain
  • Y-12 Facility, USA
  • Yeung Nam University, Republic of Korea

Resources

Resonant Ultrasound Spectroscopy is a state of the art method for accurate measurement of elastic properties of materails that will resonate. For more information on the underlying technolgoy and other approaches, see the links below.

National High Magnetic Field Laboratory

http://www.magnet.fsu.edu/inhouseresearch/rus/index.html