What is it about?
Rayleigh waves are mechanical waves that propagate along the surface of an elastic medium. We designed an innovative barrier composed of embedded locally resonant metamaterials capable of filtering the propagation of surface Rayleigh waves.
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Photo by Mike Lewinski on Unsplash
Why is it important?
The proposed barrier holds potential applications across diverse frequency ranges. In the low-frequency spectrum, it can be tailored as a seismic barrier to impede the propagation of seismic surface waves. Moving into the mid-frequency range, the barrier could be configured for ground-borne vibration mitigation systems. Finally, in the high-frequency domain, its application extends to the development of surface acoustic wave devices.
Perspectives
The design, prototyping, fabrication, and testing phases of the proposed barrier were particularly interesting, especially in light of the experimental evidence demonstrating the attenuation of surface waves through the barrier. This proof-of-concept experiment serves as a significant step forward, potentially laying the groundwork for the realization and industrialization of full-scale barriers.
Farhad Zeighami
Universita degli Studi di Bologna
Read the Original
This page is a summary of: Experimental investigation of Rayleigh wave propagation in a locally resonant metamaterial layer resting on an elastic half-space, APL Materials, February 2024, American Institute of Physics,
DOI: 10.1063/5.0171532.
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