Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/80013
Title: Interaction of lamb wave modes with weak material nonlinearity : generation of symmetric zero-frequency mode
Authors: Sun, X
Ding, X
Li, F
Zhou, S
Liu, Y
Hu, N
Su Z 
Zhao, Y
Zhang, J
Deng, M
Keywords: Nonlinear lamb waves
Structural health monitoring
Zero-frequency mode
Issue Date: 2018
Publisher: Molecular Diversity Preservation International (MDPI)
Source: Sensors (Switzerland), 2018, v. 18, no. 8, 2451, p. 1-20 How to cite?
Journal: Sensors (Switzerland) 
Abstract: The symmetric zero-frequency mode induced by weak material nonlinearity during Lamb wave propagation is explored for the first time. We theoretically confirm that, unlike the second harmonic, phase-velocity matching is not required to generate the zero-frequency mode and its signal is stronger than those of the nonlinear harmonics conventionally used, for example, the second harmonic. Experimental and numerical verifications of this theoretical analysis are conducted for the primary S0 mode wave propagating in an aluminum plate. The existence of a symmetric zero-frequency mode is of great significance, probably triggering a revolutionary progress in the field of non-destructive evaluation and structural health monitoring of the early-stage material nonlinearity based on the ultrasonic Lamb waves.
URI: http://hdl.handle.net/10397/80013
ISSN: 1424-8220
DOI: 10.3390/s18082451
Rights: © 2018 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
The following publication Sun, X., Ding, X., Li, F., Zhou, S., Liu, Y., Hu, N., . . . Deng, M. (2018). Interaction of lamb wave modes with weak material nonlinearity: Generation of symmetric zero-frequency mode. Sensors (Switzerland), 18(8), 2451, 1-20 is available at https://dx.doi.org/10.3390/s18082451
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