Aurock has its own characterization devices as well as partnerships with research labs to get some specific properties. In certain cases, the identified properties are inputs needed for numerical simulations.

Characterization of elastic properties by acoustic method

Aurock is equiped with a Resonant Frequency & Damping Analyser (RFDA). The RFDA test rig is used to do impulse excitation measurements from room temperature up to 1050°C under air. The RFDA measures resonant frequencies, internal friction or damping of samples with all kind of materials and allows to calculate the Young’s modulus, Shear modulus and Poisson ratio.

RF1
RF3
RF2

Measurements :

  • Young’s modulus (> 1 GPa)
  • Poisson’s ratio and Shear modulus
  • Damage: comparative material study
  • Damping or internal friction
  • Defaults detection in metallic materials
  • Thermal shocks resistance
  • Structural evolution during sintering
  • Dectection of phase transformation
  • Influence of a coating on the substrate

Sample specificities :

  • Homogenous and isotropic
  • Bar from 20 to 200 mm long
  • Disk from 20 to 100 mm of diameter

Tested materials :

  • Ceramics
  • Metals
  • Glasses
  • Polymer
  • Refractories
  • Concretes
  • Other materials…

Measurement according  :

  • ASTM E 1876, ISO 12680-1, ENV 843-2
  • Temperature ranging 20 to 1050°C under air or neutral atmosphere (Argon, Nitrogen)
  • Heating and cooling rate : 5°C/ min maximum
  • Complex thermal cycles

 

For non-homogeneous and anisotropic materials or for special geometries, please contact us.

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