Experimental assessment of sound insulation performance of a double window with porous absorbent materials its cavity perimeter

Tsukamoto, Yohei; Tomikawa, Yoshihiro; Sakagami, Kimihiro; Okuzono, Takeshi; Maikawa, Hidetoshi; Komoto, Yusuke

doi:10.1016/j.apacoust.2020.107317

Cited by 8 publications

(4 citation statements)

References 12 publications

(14 reference statements)

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“…For comparison with the FE results explained in Sect. 3, we used measured results for the simplified double window model introduced in an earlier work [22]. In the earlier study, the sound reduction indices and sound pressure levels (SPL) in an inner air cavity for cases with and without a frame absorber were measured using the double window model.…”

Section: Experimental Outline For Comparisonmentioning

confidence: 99%

Pilot study on numerical prediction of sound reduction index of double window system: Comparison of finite element prediction method with measurement

Mimura

Okuzono

Sakagami

2022

Acoust. Sci. & Tech.

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The development of windows with high sound insulation performance is essential for preventing the infiltration of traffic noise and the leakage of room noise. A numerical prediction is an effective means of reducing sound insulation testing and development costs to develop a quietness window. As a numerical prediction method for the sound reduction index, the finite element method (FEM) is useful in dealing with structure-acoustic problems. This study was conducted as a pilot study toward developing an accurate numerical model to predict the sound reduction index of a double window. We discussed the accuracy of an FEM model for predicting the diffuse incidence sound reduction index of double windows through a comparison with measured values for a simplified realistically scaled double window. The FE results were compared with measured ones for eight cases with and without a frame absorber. Results showed that the best match to measured values is obtained when using a frame absorber in all the perimeters inside the air cavity. Also, a better agreement is obtained at frequencies of 160-2,000 Hz in other cases. However, a marked discrepancy is found at frequencies above 2,000 Hz and below 160 Hz. Possible reasons for the discrepancies are also discussed.

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Section: Experimental Outline For Comparisonmentioning

confidence: 99%

Pilot study on numerical prediction of sound reduction index of double window system: Comparison of finite element prediction method with measurement

Mimura

Okuzono

Sakagami

2022

Acoust. Sci. & Tech.

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“…Tsukamoto et al. [230] inspected the acoustic properties of a double window structure equipped with absorbent materials through the surrounding of its cavity, considering two laboratory tests. The first test was developed with a double window containing commercially available products, whereas the second one was carried out with a model made of two acrylic panels.…”

Section: Environmental Characteristicsmentioning

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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“…So far, researchers have used several methodologies to overcome both problems by using, for example, mechanical ventilation [5] and active or passive noise control systems [6][7][8][9][10][11][12][13][14]. The latter consume less energy and can be built through several features within the window, such as perforated panels [7,15,16], porous materials [17][18][19], or acoustic metamaterials (AMMs) [20][21][22][23][24][25].…”

Section: Introductionmentioning

confidence: 99%

A Metawindow with Optimised Acoustic and Ventilation Performance

Fusaro

Lu³

et al. 2021

Applied Sciences

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Crucial factors in window performance, such as natural ventilation and noise control, are generally conceived separately, forcing users to choose one over the other. To solve this dualism, this study aimed to develop an acoustic metamaterial (AMM) ergonomic window design to allow noise control without dependence on the natural ventilation duration and vice versa. First, the finite element method (FEM) was used to investigate the noise control performance of the acoustic metawindow (AMW) unit, followed by anechoic chamber testing, which also served as the validation of the FEM models. Furthermore, FEM analysis was used to optimise the acoustic performance and assess the ventilation potential. The numerical and experimental results exhibited an overall mean sound reduction of 15 dB within a bandwidth of 380 to 5000 Hz. A good agreement between the measured and numerical results was obtained, with a mean variation of 30%. Therefore, the AMW unit optimised acoustic performance, resulting in a higher noise reduction, especially from 50 to 500 Hz. Finally, most of the AMW unit configurations are suitable for natural ventilation, and a dynamic tuned ventilation capacity can be achieved for particular ranges by adjusting the window’s ventilation opening. The proposed designs have potential applications in building acoustics and engineering where natural ventilation and noise mitigation are required to meet regulations simultaneously.

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Experimental assessment of sound insulation performance of a double window with porous absorbent materials its cavity perimeter

Cited by 8 publications

References 12 publications

Pilot study on numerical prediction of sound reduction index of double window system: Comparison of finite element prediction method with measurement

Pilot study on numerical prediction of sound reduction index of double window system: Comparison of finite element prediction method with measurement

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

A Metawindow with Optimised Acoustic and Ventilation Performance

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