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research-article

Resonant Ultrasound Spectroscopy: Sensitivity Analysis for Isotropic Materials and Anisotropic Materials with Cubic Symmetry

[+] Author and Article Information
Farhad Farzbod

Assistant Professor, University of Mississippi, 201A Carrier Hall, University, MS 38677, ASME Member
farzbod@gatech.edu

Onome Scott-Emuakpor

Senior Aerospace Engineer, Aerospace Systems Directorate (AFRL/RQTI), 1950 Fifth Street, Bldg. 18D, Wright-Patterson AFB, OH 45433, ASME Member
onome.scott-emuakpor.1@us.af.mil

1Corresponding author.

ASME doi:10.1115/1.4041593 History: Received October 13, 2017; Revised September 20, 2018

Abstract

Resonant ultrasound spectroscopy (RUS) is an experimental method to measure elastic and anelastic properties of materials. The RUS experiment is conducted by exciting a specimen with a simple geometry and measuring resonant frequencies. From the resonant behaviors, both elastic and anelastic properties of the sample material can be extracted. This paper investigates the sensitivities of measured resonant frequencies to changes in elastic constants for an isotropic material and anisotropic material with cubic symmetry. Also under investigation is whether different specimen geometries increase the sensitivity of RUS; in other words, a path for optimizing the reliability of RUS data is explored.

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