Energy focusing of broadband Lamb wave by designing excitation waveforms and elastic metamaterials

In this study, an energy focusing method based on broadband Lamb waves by simultaneous designing excitation waveforms and elastic metamaterials is proposed. Firstly, COMSOL finite element simulation software is used to calculate the relationship between the metamaterial structure and the excitation wave. Subsequently, the metamaterial structure and the excitation signal form are designed according to the relationship. Finally, the metamaterial structure is bonded with the aluminum plate using 3D printing PA2200 nylon to verify the effectiveness of the method.PMID:38479109 | DOI:10.1016/j.ultras.2024.107294

Source: Ultrasonics - March 13, 2024 Category: Physics Authors: Daiyao Du Jiadong Hua Chun Cui Jing Lin Source Type: research