An empirical model to predict sound absorption ability of woven fabrics

Cai, Ze-Nong; Li, Xianhui; Gai, Xiao-Ling; Zhang, Bin; Xing, Tuo

doi:10.1016/j.apacoust.2020.107483

Cited by 22 publications

(12 citation statements)

References 17 publications

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“…A considerable amount of literature has been published on the sound absorption of textile materials [7][8][9][10]. These studies have focused on sound absorption measurement in of textile materials [6,[11][12][13], as well as the model establishment and sound absorption prediction [14][15][16][17][18]. Various composite materials composed of fabric and textile fiber show good sound absorption performance [10,19].…”

Section: Introductionmentioning

confidence: 99%

“…When the materials under test are flexible or extremely thin, it is difficult to mount the sample materials onto the impedance tube properly. There is some published literature to address this issue, such as mounting the testing sample onto the impedance tube by bundling the flexible sample onto a rigid ring [17,25]. However, this induces measuring errors since the acoustic properties of the test sample can change when adding a ring on the surface [26].…”

Section: Introductionmentioning

confidence: 99%

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Design of an improved impedance tube to measure sound absorption coefficients of flexible textile materials

Li,

Dai,

Yao

et al. 2024

Eng. Res. Express

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Abstract： Textile materials have demonstrated significant potential in sound noise reduction due to their porous, lightweight, and easily processed nature. However, the current experimental setup for measuring the sound absorption of small-sized samples is expensive. Additionally, there is a lack of suitable equipment for measuring the sound absorption of flexible textiles as it is challenging to mount flexible samples into an impedance tube. This paper presents the design, fabrication, and testing of impedance tubes specifically designed for measuring the sound absorption coefficients of textile materials. The impedance tubes were designed based on the transfer function and two-microphone methods, with diameters of 100 mm and 30 mm. These tubes covered frequency ranges from 200-1600 Hz and 500-6400 Hz, respectively. Furthermore, improved sample holders were developed to mount flexible textile materials without altering the acoustic impedance characteristics of the front surface of the test sample. Validation experiments were conducted on melamine foams, and the results were compared with those obtained from the commercial B&K 4206 setup. The results obtained from the designed setup showed good agreement with those from the B&K 4206 system. The maximum error observed was 8% at 2800 Hz for the 30 mm diameter tube and 8.3% at 1600 Hz for the 100 mm diameter tube. Finally, the designed system was used to measure the sound absorption coefficients of textile materials with varying densities. The results obtained were consistent with the material properties, demonstrating the effectiveness of the designed setup.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Design of an improved impedance tube to measure sound absorption coefficients of flexible textile materials

Li,

Dai,

Yao

et al. 2024

Eng. Res. Express

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“…Porous materials can be divided into fibrous, foam, and granular sound-absorbing materials [6][7][8][9][10][11] . The sound absorption performance of porous materials can be improved by combining them with other materials.…”

Section: Introductionmentioning

confidence: 99%

Theoretical study of sound absorption performance for Al₂O₃-polyurethane foam composite

Yuan,

Hou,

Liu

et al. 2023

J. Phys.: Conf. Ser.

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To reveal the sound absorption property and mechanisms of Al2O3-polyurethane (Al2O3-PU) composite materials in theory, the impedance tube model is established by using the finite element method in this paper. Meantime, the theoretical modal and the calculation method adopt the Johnson-Champoux-Allard (JCA) modal and the standing wave ratio method, respectively. By comparing the experimental and simulation values of PU and Al2O3-PU composites from 0 to 1250 Hz, the results prove that the JCA predicted values can match the actual measured values. To further predict the sound property of Al2O3-PU composites in the medium and high frequency, the diameter of 29 mm and length of 600 mm for the impedance tube is installed. Finally, the sound pressure distribution diagram of the impedance tube is obtained.

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“…In substations, low-frequency noise pollution is serious, affecting people's physical and mental health. [1][2][3][4] Thus, reduction low-frequency noise is particularly important. Single structure, such as porous foam or resonant structure, has relatively low-frequency sound absorption performance.…”

Section: Introductionmentioning

confidence: 99%

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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An empirical model to predict sound absorption ability of woven fabrics

Cited by 22 publications

References 17 publications

Design of an improved impedance tube to measure sound absorption coefficients of flexible textile materials

Design of an improved impedance tube to measure sound absorption coefficients of flexible textile materials

Theoretical study of sound absorption performance for Al₂O₃-polyurethane foam composite

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

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An empirical model to predict sound absorption ability of woven fabrics

Cited by 22 publications

References 17 publications

Design of an improved impedance tube to measure sound absorption coefficients of flexible textile materials

Design of an improved impedance tube to measure sound absorption coefficients of flexible textile materials

Theoretical study of sound absorption performance for Al2O3-polyurethane foam composite

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

Contact Info

Product

Resources

About

Theoretical study of sound absorption performance for Al₂O₃-polyurethane foam composite

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