Sonic Crystal Noise Barrier with Resonant Cavities for Train Brake Noise Mitigation

David Ramírez-Solana, Jaime Galiana-Nieves, Rubén Picó, Javier Redondo, Valentino Sangiorgio, Angelo Vito Graziano, Nicola Parisi

Producción científica: Contribución a una revistaArtículorevisión exhaustiva


In an experimental investigation, the development of sonic crystal noise barriers (SCNBs) is undertaken to address the issue of train brake noise (TBN), focusing on the use of local resonances in scatterers of sonic crystals. Recent research has shown that the inclusion of cavity resonators in the crystal scatterers allows for the modification of their insulating properties. In those works, it has been demonstrated that this interaction can be used to build highly insulating structures. The study proposes an SCNB design that includes a resonant cavity specifically to mitigate TBN and validates this design through experimental measures. The experiments confirm the enhanced sound insulation capabilities of SCNBs, compare them to the conventional noise barriers ones and demonstrate the applicability and effectiveness of the proposed design in real-world scenarios.

Idioma originalInglés
Número de artículo2753
PublicaciónApplied Sciences (Switzerland)
EstadoPublicada - abr. 2024
Publicado de forma externa


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