PMID- 30833179 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20191120 IS - 1874-9968 (Electronic) IS - 0041-624X (Linking) VI - 96 DP - 2019 Jul TI - On the determination of the third-order elastic constants of homogeneous isotropic materials utilising Rayleigh waves. PG - 96-103 LID - S0041-624X(18)30819-9 [pii] LID - 10.1016/j.ultras.2019.02.006 [doi] AB - 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. CI - Copyright (c) 2019 Elsevier B.V. All rights reserved. FAU - Mohabuth, Munawwar AU - Mohabuth M AD - School of Mechanical Engineering, The University of Adelaide, Adelaide, SA 5005, Australia. Electronic address: munawwar.mohabuth@adelaide.edu.au. FAU - Khanna, Aditya AU - Khanna A AD - School of Mechanical Engineering, The University of Adelaide, Adelaide, SA 5005, Australia. FAU - Hughes, James AU - Hughes J AD - School of Mechanical Engineering, The University of Adelaide, Adelaide, SA 5005, Australia. FAU - Vidler, James AU - Vidler J AD - School of Mechanical Engineering, The University of Adelaide, Adelaide, SA 5005, Australia. FAU - Kotousov, Andrei AU - Kotousov A AD - School of Mechanical Engineering, The University of Adelaide, Adelaide, SA 5005, Australia. FAU - Ng, Ching-Tai AU - Ng CT AD - School of Civil, Environmental and Mining Engineering, The University of Adelaide, Adelaide, SA 5005, Australia. LA - eng PT - Journal Article DEP - 20190219 PL - Netherlands TA - Ultrasonics JT - Ultrasonics JID - 0050452 OTO - NOTNLM OT - Acoustoelasticity OT - Material properties OT - Murnaghan constants OT - Rayleigh waves OT - Stress measurement EDAT- 2019/03/06 06:00 MHDA- 2019/03/06 06:01 CRDT- 2019/03/06 06:00 PHST- 2018/12/14 00:00 [received] PHST- 2019/01/29 00:00 [revised] PHST- 2019/02/15 00:00 [accepted] PHST- 2019/03/06 06:00 [pubmed] PHST- 2019/03/06 06:01 [medline] PHST- 2019/03/06 06:00 [entrez] AID - S0041-624X(18)30819-9 [pii] AID - 10.1016/j.ultras.2019.02.006 [doi] PST - ppublish SO - Ultrasonics. 2019 Jul;96:96-103. doi: 10.1016/j.ultras.2019.02.006. Epub 2019 Feb 19.