AI Article Synopsis
- - The paper introduces a method to analyze the effective properties of acoustic metamaterials specifically designed for underwater applications, emphasizing quick and reliable procedures using both computer simulations and physical measurements.
- - The method's accuracy is demonstrated through tests on a metamaterial unit cell made of aluminum honeycomb with rubber spacers, showing strong agreement between simulated and measured results in a water environment.
- - The metamaterial achieves unique properties, such as lower density and varying mass density, which can be advantageous for advanced acoustic technologies underwater, indicating its potential in creating innovative underwater acoustic devices.
Article Abstract
This paper presents a method to characterize the effective properties of inertial acoustic metamaterial unit cells for underwater operation. The method is manifested by a fast and reliable parameter retrieval procedure utilizing both numerical simulations and measurements. The effectiveness of the method was proved to be self-consistent by a metamaterial unit cell composed of aluminum honeycomb panels with soft rubber spacers. Simulated results agree well with the measured responses of this metamaterial in a water-filled resonator tube. A sub-unity density ratio and an anisotropic mass density are simultaneously achieved by the metamaterial unit cell, making it useful in implementations of transformation acoustics. The metamaterial, together with the approach for its characterization, are expected to be useful for underwater acoustic devices.
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| http://dx.doi.org/10.1121/10.0003629 | DOI Listing |
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