Elastic Property Measurements and Detection of Component Flaws, Degradation or Damage using Resonant Ultrasound Spectroscopy (RUS)

National Laboratory: 
Pacific Northwest National Laboratory
Characterization Class: 
Non-destructive examination
Computational Tools Class: 
Structure-Properties
Description: 

The structural properties of a material can be determined with high accuracy using Resonant Ultrasound Spectroscopy (RUS) measurements coupled with finite element modeling predictions of vibrational modes and an estimated elastic tensor.  Vibrational mode frequencies obtained from RUS spectra are used to determine elastic coefficients C11 and C44 through inverse analysis techniques. These elastic coefficients are then used to determine structural properties (Young’s modulus, E; shear modulus,G; and Poisson’s ratio, m) of the material.

Capability Bounds: 

The measurement can accommodate small material coupons and direct contact between the transducers and the coupon is required.

Unique Aspects: 

PNNL has finite element modeling capabilities to predict the vibrational modes and estimate the elastic tensor of a material, and a resonant ultrasonic spectroscopy (RUS) system to measure resonant vibration frequencies with high-accuracy.

Single Point of Contact: 

Name: Darrell Herling
Email: darrell.herling@pnnl.gov
Phone: (509) 375-6911

References: 
  1. Biswas, K., Good, M., Roberts, K., Subramanian, M., Hendricks, T., "Thermoelectric and Structural Properties of High-Performance In-Based Skutterudites for High-Temperature Energy Recovery", Journal of Materials Research, vol. 26, 2011.
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