A magnetic fluid-solid interactive metamaterial for tunable elastic wave control

Yihao Song; Yanfeng Shen

doi:10.1117/12.2612596

19 April 2022 A magnetic fluid-solid interactive metamaterial for tunable elastic wave control

Yihao Song, Yanfeng Shen

Proceedings Volume 12048, Health Monitoring of Structural and Biological Systems XVI; 120480K (2022) https://doi.org/10.1117/12.2612596
Event: SPIE Smart Structures + Nondestructive Evaluation, 2022, Long Beach, California, United States

Abstract

Liquid-constituted metamaterials are burgeoning due to their adaptive features compared with their solid counterparts. The steerable characteristics would intensively benefit the active metamaterial designs for controlling elastic guided waves. In this paper, a magnetic fluid-solid interactive metamaterial is elaborately designed to achieve the stopband switching for the manipulation of ultrasonic waves. It is revealed that fluid-structure interaction phenomenon plays the indispensable role for the bandgap formation and translation scenario. The tunable mechanism stems from the variation of the interplay circumstance arising from liquid redistribution during the magnetic field variation procedure. The stop-passing-band-opening effectiveness of the proposed metamaterial would be explicitly validated through both analytical predication and numerical simulations. Such an active design may possess enabling application potential for future highly flexible wave control, e.g., selective-tunnel waveguiding and adaptive mechanical frequency filtering.

Conference Presentation

Citation Download Citation

Yihao Song and Yanfeng Shen "A magnetic fluid-solid interactive metamaterial for tunable elastic wave control", Proc. SPIE 12048, Health Monitoring of Structural and Biological Systems XVI, 120480K (19 April 2022); https://doi.org/10.1117/12.2612596

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