Sound absorption behaviors of metamaterials with periodic multi-resonator and voids in water

Jin, Guoyong; Shi, Kangkang; Ye, Tiangui; Zhou, Jialiang; Yin, Yaowei

doi:10.1016/j.apacoust.2020.107351

Cited by 39 publications

(17 citation statements)

References 47 publications

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“…To survey the sound absorption mechanism of the PU-based composite at the frequency of the sound absorption peak, the displacement vector and the displacement field of the composite with different tanδ at 4 kHz were investigated and are exhibited in Figure 5 . It was obvious that the displacement direction (red arrow in Figure 5 ) and displacement size showed little change with different tanδ, illustrating that the change in tanδ could not affect the overall vibration characteristics of the composite [ 37 ]. It was probably because the position of the sound absorption peak was more related to the material structure (geometric size); however, the change in tanδ only reflected the change in the material parameter (tanδ), and its structure did not change [ 38 ].…”

Section: Resultsmentioning

confidence: 99%

Finite Element Solution for Dynamic Mechanical Parameter Influence on Underwater Sound Absorption of Polyurethane-Based Composite

Yin

Liu

Wang

et al. 2022

IJMS

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Underwater noise pollution, mainly emitted by shipping and ocean infrastructure development of human activities, has produced severe environmental impacts on marine species and seabed habitats. In recent years, a polyurethane-based (PU-based) composite with excellent damping performance has been increasingly utilized as underwater sound absorption material by attaching it to equipment surfaces. As one of the key parameters of damping materials, dynamic mechanical parameters are of vital importance to evaluating the viscoelastic damping property and thus influencing the sound absorption performance. Nevertheless, lots of researchers have not checked thoroughly the relationship and the mechanism of the material dynamic mechanical parameters and its sound absorption performance. In this work, a finite element model was fabricated and verified effectively using acoustic pulse tube tests to investigate the aforementioned issues. The influence of the dynamic mechanical parameters on underwater sound absorption performance was systematically studied with the frequency domain to reveal the mechanism and the relationship between damping properties and the sound absorption of the PU-based composite. The results indicate that the internal friction of the molecular segments and the structure stiffness were the two main contributors of the PU-based composite’s consumption of sound energy, and the sound absorption peak and the sound absorption coefficient could be clearly changed by adjusting the dynamic mechanical parameters of the composite. This study will provide helpful guidance to develop the fabrication and engineering applications of the PU-based composite with outstanding underwater sound absorption performance.

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Section: Resultsmentioning

confidence: 99%

Finite Element Solution for Dynamic Mechanical Parameter Influence on Underwater Sound Absorption of Polyurethane-Based Composite

Yin

Liu

Wang

et al. 2022

IJMS

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“…Jin et al. [120] presented a new composite AM including periodic multi-resonator and voids. In this structure, the periodic multi-resonator and voids were incorporated into the acoustic absorption and insulation layers.…”

Section: Methodsmentioning

confidence: 99%

Prediction of acoustic wave transmission features of the multilayered plate constructions: A review

Zarastvand

Ghassabi

Talebitooti

2021

Jnl of Sandwich Structures & Materials

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This study collects all of the existent papers in the field of acoustic transmission across multilayered plate constructions. Herewith, a comprehensive source is proposed wherein approximately 410 references are reviewed and described from the first [Formula: see text] to [Formula: see text]. In the first part, in addition to the presentation of a complete explanation about the importance of the acoustic analysis of these structures, appropriate formulations are also provided. Furthermore, an overview of the thematic correspondent is carried out. Since the type of material used in these constructions can be very important in sound insulation, the significance of this subject is remarked. The papers are then classified based on their acoustic excitation fields containing plane wave, diffuse, random, and point source. After analyzing the research approaches according to different environmental properties, the articles are ordered based on their boundaries as finite and infinite. To present reliable outcomes, it is necessary to investigate a proper theory proportional to the structure’s thickness. Herewith, this issue is also discussed in detail. The review is also expanded to focus on the different vibroacoustic solutions. Before concluding remarks, the authors' research works are presented wherein either optimization algorithms or control techniques improve the acoustic performance of these structures.

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“…Wang et al 12 designed a composite structure filled with particle aerogel in Helmholtz resonators (HRS). The above research results [5][6][7][8][9][10][11][12] had improved the sound absorption performance, but it was still needed to further research in the ultra-low frequency range (<200 Hz).…”

Section: Introductionmentioning

confidence: 93%

Theoretical and experimental study on sound absorption performance of Al₂O₃-polyurethane foam and microperforated plate composite structure

Yuan

Weiguang

Liu

et al. 2022

Journal of Low Frequency Noise, Vibration and Active Control

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Low-frequency noise pollution in substations has a significant impact on the physical and mental health of workers. Reduction low-frequency noise pollution is an urgent problem to solve for researchers. In this paper, the different structures of Al2O3-polyurethane composites and micro-perforated plate were constructed, and the effects of cavity depth, perforated plate, and foam position on sound absorption properties were comprehensively investigated. The results showed that the position of perforated plate and the arrangement of resonance structure were the two most important factors affecting sound absorption performance. When the sound wave passed through the plexiglass plate–cavity–composites foam–perforated plate in turn, the peak position of sound absorption coefficient was located in the ultra-low frequency range. Meantime, the simulation study showed that the friction between the air column and the cavity wall in the perforated plate can consume sound energy to achieve sound absorption.

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Sound absorption behaviors of metamaterials with periodic multi-resonator and voids in water

Cited by 39 publications

References 47 publications

Finite Element Solution for Dynamic Mechanical Parameter Influence on Underwater Sound Absorption of Polyurethane-Based Composite

Finite Element Solution for Dynamic Mechanical Parameter Influence on Underwater Sound Absorption of Polyurethane-Based Composite

Prediction of acoustic wave transmission features of the multilayered plate constructions: A review

Theoretical and experimental study on sound absorption performance of Al₂O₃-polyurethane foam and microperforated plate composite structure

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Sound absorption behaviors of metamaterials with periodic multi-resonator and voids in water

Cited by 39 publications

References 47 publications

Finite Element Solution for Dynamic Mechanical Parameter Influence on Underwater Sound Absorption of Polyurethane-Based Composite

Finite Element Solution for Dynamic Mechanical Parameter Influence on Underwater Sound Absorption of Polyurethane-Based Composite

Prediction of acoustic wave transmission features of the multilayered plate constructions: A review

Theoretical and experimental study on sound absorption performance of Al2O3-polyurethane foam and microperforated plate composite structure

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Product

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About

Theoretical and experimental study on sound absorption performance of Al₂O₃-polyurethane foam and microperforated plate composite structure