Estimation via Laser Ultrasonics of the Ultrasonic Attenuation in a Polycrystalline Aluminum Thin Plate Using Complex Wavenumber Recovery in the Vicinity of a Zero-Group-Velocity Lamb Mode

Estimation via Laser Ultrasonics of the Ultrasonic Attenuation in a Polycrystalline Aluminum Thin Plate Using Complex Wavenumber Recovery in the Vicinity of a Zero-Group-Velocity Lamb Mode

In this paper, we present a method to recover the complex wavenumber dispersion relations using spatial Laplace transform from experimental spatiotemporal signals measured by laser ultrasonic technique. The proposed method was applied on zero-group-velocity Lamb modes in order to extract the ultraso...

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Bibliographic Details
Main Authors: Guqi Yan, Samuel Raetz, Jean-Philippe Groby, Aroune Duclos, Alan Geslain, Nikolay Chigarev, Vitalyi E. Gusev, Vincent Tournat
Format: Article
Language:English
Published: MDPI AG 2021-07-01
Series:Applied Sciences
Subjects:
laser ultrasonics
zero-group-velocity Lamb modes
complex dispersion curves
ultrasonic attenuation
non-destructive testing and evaluation
Online Access:https://www.mdpi.com/2076-3417/11/15/6924

Internet

https://www.mdpi.com/2076-3417/11/15/6924

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