Please use this identifier to cite or link to this item:
https://hdl.handle.net/2440/120973
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Type: | Journal article |
Title: | On the determination of the third-order elastic constants of homogeneous isotropic materials utilising Rayleigh waves |
Author: | Mohabuth, M. Khanna, A. Hughes, J. Vidler, J. Kotousov, A. Ng, C.T. |
Citation: | Ultrasonics, 2019; 96:96-103 |
Publisher: | Elsevier |
Issue Date: | 2019 |
ISSN: | 0041-624X 1874-9968 |
Statement of Responsibility: | Munawwar Mohabuth, Aditya Khanna, James Hughes, James Vidler, Andrei Kotousov, Ching-Tai Ng |
Abstract: | This paper presents a new method for determining the third-order elastic constants (TOECs) of a homogeneous isotropic material utilising the acoustoelastic effect associated with Rayleigh waves. It is demonstrated that the accuracy of the evaluation of TOECs can be substantially improved by supplementing the classical equations of acoustoelasticity, which describe the effect of applied stress on bulk wave speeds, with the nonlinear characteristic equation for the propagation of Rayleigh waves in pre-stressed media. The developed method can be readily implemented for Structural Health Monitoring applications; for example, the measurement of applied stresses based on the acoustoelastic effect, or the monitoring of near-surface microstructural damage based on the change in magnitude of the TOECs. |
Keywords: | Acoustoelasticity; Rayleigh waves; material properties; Murnaghan constants; stress measurement |
Rights: | © 2019 Elsevier B.V. All rights reserved. |
DOI: | 10.1016/j.ultras.2019.02.006 |
Grant ID: | http://purl.org/au-research/grants/arc/DP160102233 |
Published version: | http://dx.doi.org/10.1016/j.ultras.2019.02.006 |
Appears in Collections: | Aurora harvest 8 Mechanical Engineering publications |
Files in This Item:
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hdl_120973.pdf | Submitted version | 1.41 MB | Adobe PDF | View/Open |
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