Issue |
Acta Acust.
Volume 7, 2023
|
|
---|---|---|
Article Number | 30 | |
Number of page(s) | 11 | |
Section | Ultrasonics | |
DOI | https://doi.org/10.1051/aacus/2023024 | |
Published online | 26 June 2023 |
Scientific Article
Numerical study of beam shape adaptation by anisotropic disk covering transducer or metamaterial
Georgia Institute of Technology, George W. Woodruff School of Mechanical Engineering, Georgia Tech Europe, Laboratory for Ultrasonic Nondestructive Evaluation, IRL 2958 Georgia Tech – CNRS, 2 rue Marconi, 57070 Metz, France
* Corresponding author: declercq@gatech.edu
Received:
20
January
2023
Accepted:
22
May
2023
Metamaterials are intensely explored for their capabilities to modify sound beams. In addition to frequency filtering, acoustic lenses offer intriguing possibilities for shaping sound beams. For the time being, the versatility of metamaterials remains limitless. In beam-shape adaptation, however, their complexity suggests that manufacturers of transducers could benefit from combining metamaterials with more conventional materials. This paper investigates the transmission of a circumscribed beam through a stratum of anisotropic material to examine the change in beam shape after transmission. The incident sound is presumed to originate from a conventional transducer, possibly coated with a metamaterial to modify the sound field, before being transmitted through the anisotropic layer. Different incident beam shapes, such as conical-like, Gaussian, and pillar beams, are investigated. While the results are not exhaustive, they demonstrate the beam shape’s adaptability.
Key words: Beam shape adaptation / Gaussian beams / Pillar beams / Conical-like beams / Fiber-reinforced composites / Metamaterials
© The Author(s), Published by EDP Sciences, 2023
This is an Open Access article distributed under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.