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  4. Nonlinear interaction of Rayleigh waves in isotropic materials: Numerical and experimental investigation
 
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2022
Journal Article
Titel

Nonlinear interaction of Rayleigh waves in isotropic materials: Numerical and experimental investigation

Abstract
Surface treatment intensity monitoring is still an open and challenging nondestructive testing problem. For the estimation of residual stress with ultrasonic measurements, local linear and nonlinear elastic constants are needed as input. In this paper, nonlinear elastic-wave interactions (also called wave mixing or scattering) - namely, the generation of secondary ultrasonic waves in a nonlinear medium — are considered as a prospective means for near-surface nonlinear elastic parameter evaluation. The allowed interactions between bulk and surface waves, as well as the dependence of the scattering efficiency on the frequency and angle between source waves, were investigated through an analytical model, then compared with FEM simulations and experimental results. Finally, possible future steps for the development of the applied methods for the determination of near-surface higher-order elastic constants are discussed. In addition, several problem-relevant data processing procedures are presented.
Author(s)
Gartsev, Sergey
Fraunhofer-Institut für Keramische Technologien und Systeme IKTS
Zuo, Peng
Rjelka, Marek
Fraunhofer-Institut für Keramische Technologien und Systeme IKTS
Mayer, Andreas
Hochschule Offenburg
Köhler, Bernd
Fraunhofer-Institut für Keramische Technologien und Systeme IKTS
Zeitschrift
Ultrasonics
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DOI
10.1016/j.ultras.2021.106664
Language
English
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