Metamaterials acoustic barrier

Iannace, Gino; Ciaburro, Giuseppe; Trematerra, Amelia

doi:10.1016/j.apacoust.2021.108172

Cited by 29 publications

(21 citation statements)

References 21 publications

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“…Different alternating rows of cylindrical bars were arranged with an empty space to form regular geometries. The results suggest that barriers made with metamaterials can be effective substitutes for traditional barriers in mitigating noise [64]. However, there have been relatively few reports on the use of metamaterials for underwater sound absorption.…”

Section: Metamaterialsmentioning

confidence: 96%

Multifunctional Integrated Underwater Sound Absorption Materials: A Review

et al. 2023

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Rapid improvements in underwater vehicle technology have led to a significant increase in the demand for underwater sound absorption materials. These materials, unlike their counterparts utilized in air, must have high hydrostatic pressure resistance, corrosion resistance, and other advantageous attributes. This necessitates the development of innovative, composite sound-absorbing materials with multifunctional properties, which presents substantial challenges for researchers. In this comprehensive review, we systematically analyze and categorize the mechanisms governing underwater sound absorption, hydrostatic pressure resistance, and corrosion prevention while considering related research advances. Furthermore, we provide an extensive overview of research advancements, existing challenges, and potential solutions pertaining to multifunctional and integrated underwater sound-absorbing materials. This review aims to serve as a valuable resource for future investigations into the development and optimization of multifunctional integrated underwater sound-absorbing materials, thereby contributing to the advancement of underwater vehicle technology.

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Section: Metamaterialsmentioning

confidence: 96%

Multifunctional Integrated Underwater Sound Absorption Materials: A Review

et al. 2023

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“…Based on the coiled-up space concept, a compact multi-layered structure was recently proposed by Sharafkhani 26 for power transformer noise absorption at 100 and 200 Hz. The sound attenuation of an acoustic barrier made with metamaterials was studied by Iannace et al 27 A new type of metamaterial which was made from buttons glued on a polyvinyl chloride membrane has been recently developed. Within this work, the results from the sound absorption coefficient measurements, were used as input for training a simulation model based on artificial neural networks.…”

Section: Introductionmentioning

confidence: 99%

Phononic metamaterial for efficient sound attenuation applications

2022

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In this work, a phononic metamaterial suitable for several sound attenuation applications is numerically and experimentally examined. The proposed structure consists of a combination of spheres in a face-centered cubic arrangement with rods that form the Yablonovite Structure. The Sound Transmission Loss of the structure is experimentally examined. In addition, numerical calculations of the Sound Transmission Loss were performed by using the Finite Element Method. The research includes experimental and numerical validation of different geometric parameters of the structure. The Sound Transmission Loss of the proposed structure found to have wide values over a wide frequency range of the audio spectrum. The findings of this research strongly indicate that the proposed metamaterial is a powerful candidate for efficient sound attenuation applications.

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“…Recently, the emergence of acoustic metamaterials provides a new way for controlling the noise of filter capacitors. [5,6] In 2008, a membrane-type acoustic metamaterial (MAM) was proposed by Yang et al [7] for the first time. By attaching a small mass to the center of a membrane with a fixed boundary, a sound transmission loss (STL) much higher than mass law was obtained in low-frequency range.…”

Section: Introductionmentioning

confidence: 99%

A High‐Performance Sound Insulation Component for Filter Capacitors Based on Coiled‐up Acoustic Metamaterials

Lin

2022

Physica Status Solidi (a)

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In the light of the spectrum characteristics of filter capacitor noise, a high‐performance sound insulation component (HSIC) based on coiled‐up acoustic metamaterials is developed. By efficiently absorbing harmonic components whose acoustic energy is predominant, HSIC can insulate the middle‐ and low‐frequency noise radiated by filter capacitors significantly. Simulated results show that under the excitation of a normal incident sound wave, the sound transmission loss of HSIC is 8.0, 7.0, 6.9, and 4.3 dB higher than that of a homogeneous panel with same area density (HPSAD) at the frequencies of 400, 500, 600, and 700 Hz, respectively. The transmission loss of HSIC for filter capacitor noise is 6.4 dB(A) higher than that of HPSAD. Experimental results show that under the excitation of a diffuse sound field, HSIC still has an excellent sound insulation performance and the transmission loss for filter capacitor noise can increase by 4.5 dB(A). Furthermore, an impedance analysis and a complex frequency plane analysis are conducted to elucidate the sound insulation and absorption mechanism of HSIC.

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Metamaterials acoustic barrier

Cited by 29 publications

References 21 publications

Multifunctional Integrated Underwater Sound Absorption Materials: A Review

Multifunctional Integrated Underwater Sound Absorption Materials: A Review

Phononic metamaterial for efficient sound attenuation applications

A High‐Performance Sound Insulation Component for Filter Capacitors Based on Coiled‐up Acoustic Metamaterials

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