Work

Broadband-omnidirectional absorption using inclined wiremesh gratings

Year: 2025

Type: article

Abstract: With the aim of achieving strong absorption over a wide range of frequencies and angles of incidence, the reflection of an acoustic wave by a rigidly-backed periodic layer of inclined ultrathin resistive sheet is studied theoretically and numerically. It appears that the structure exhibits either almost omnidirectional large absorption over a subwavelength frequency band for large resistivity of the wiremesh or large absorption over a broad frequency band for medium resistivity. Both optimal values are obtained for large inclination angles. These findings provide promising perspectives for the design of broadband omnidirectional subwavelength sound-absorbing devices.

Source: JASA Express Letters

DOI: 10.1121/10.0038993

Authors: Juan Pablo Escudero, Jean-Philippe Groby, Vincent Pagneux

Institutions: Centre National de la Recherche Scientifique, Le Mans Université, Laboratoire d'Acoustique de l'Université du Mans

Language: English

Topic: Acoustic Wave Phenomena Research

Subfield: Biomedical Engineering

Field: Engineering

Domain: Physical Sciences

Open Access status: diamond

Funder: HORIZON EUROPE Marie Sklodowska-Curie Actions

Award: G2007201934