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Title: RUScal: Software for the analysis of resonant ultrasound spectroscopy measurements

Journal Article · · Journal of the Acoustical Society of America
DOI:https://doi.org/10.1121/10.0011397· OSTI ID:1876321

Resonant ultrasound spectroscopy is used to nondestructively measure the elastic resonances of small solids to elucidate the material's elastic properties or other qualities like size, shape, or composition. In this work, we introduce the software RUScal for the purpose of determining elastic properties by analyzing the eigenfrequencies of solid specimens with common shapes, such as rectangular parallelepipeds, cylinders (solid and hollow tube), ellipsoids, and octahedrons, as well as irregularly shaped ellipsoids that can be described analytically. All symmetry classes are supported, from isotropic to triclinic, along with the option to add or remove up to three orthogonal mirror planes as well as the ability to reorient the crystal axes with respect the sample edges via Euler angles. Additional features include tools to help find initial sets of elastic constants, including grid exploration and Monte Carlo methods, a tool to analyze frequencies as a function of sample length or crystal orientation, an error analysis tool to assess fit quality, and formatting of the input and output files for batch fitting, e.g., as a function of temperature. This software was validated with published resonant ultrasound spectroscopy data for various materials, shapes, and symmetries with noted improvements in calculation time compared to finite element methods.

Research Organization:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Sponsoring Organization:
USDOE Laboratory Directed Research and Development (LDRD) Program; USDOE Laboratory Directed Research and Development (LDRD) Program. Oak Ridge National Laboratory (ORNL)
Grant/Contract Number:
AC05-00OR22725; 89233218CNA000001
OSTI ID:
1876321
Alternate ID(s):
OSTI ID: 1872364
Report Number(s):
LA-UR-22-23263
Journal Information:
Journal of the Acoustical Society of America, Vol. 151, Issue 5; ISSN 0001-4966
Publisher:
Acoustical Society of AmericaCopyright Statement
Country of Publication:
United States
Language:
English

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