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   Articles with "micro perforated" as a keyword



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Design guide of single layer micro perforated panel absorber with uniform air gap

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recommendations! Published in 2017 at "Applied Acoustics"

DOI: 10.1016/j.apacoust.2017.04.020

Abstract: Abstract Micro perforated panel (MPP) sound absorber with single uniform air gap is an applicable absorbing material that can provide full absorption at a specific frequency, but practical usages of them are limited and design… read more here.

Keywords: uniform air; micro perforated; air gap; perforated panel ... See more keywords
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A strategy for extending the effective application of micro-perforated panel absorbers to high sound intensity

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recommendations! Published in 2018 at "Applied Acoustics"

DOI: 10.1016/j.apacoust.2017.09.014

Abstract: Abstract Micro-perforated panel (MPP) absorbers are simple to construct, can be used in a variety of applications, show good absorption properties and allow relatively accurate prediction and design under linear conditions. However, when the sound intensity… read more here.

Keywords: sound intensity; micro perforated; perforated panel; absorbers high ... See more keywords
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Sound absorbers with a micro-perforated panel backed by an array of parallel-arranged sub-cavities at different depths

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recommendations! Published in 2019 at "Applied Acoustics"

DOI: 10.1016/j.apacoust.2019.01.013

Abstract: Abstract This paper presents a type of wide band micro-perforated panel (MPP) absorber with an array of parallel arranged sub-cavities at different depths based on the quadratic residue sequence (QRS). An analytical prediction model is… read more here.

Keywords: micro perforated; mpp absorber; array parallel; mpp ... See more keywords
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Absorption and transmission of boundary layer noise through flexible multi-layer micro-perforated structures

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recommendations! Published in 2017 at "Journal of Sound and Vibration"

DOI: 10.1016/j.jsv.2017.02.018

Abstract: Abstract This paper describes analytical and experimental studies conducted to understand both the absorption and transmission performance of non-fibrous micro-perforated partitions excited by a turbulent boundary layer (TBL). This is of relevance in surface and… read more here.

Keywords: absorption; micro perforated; layer; boundary layer ... See more keywords
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Improvement of the sound absorption of flexible micro-perforated panels by local resonances

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recommendations! Published in 2019 at "Mechanical Systems and Signal Processing"

DOI: 10.1016/j.ymssp.2018.07.046

Abstract: Abstract To further improve the sound absorption enhancement of flexible micro-perforated panels (FMPPs), a new sort of perforated sound absorbers – metamaterial-based micro-perforated panels (MMPPs) – is proposed by combining a micro-perforated host panel and… read more here.

Keywords: micro perforated; perforated panels; flexible micro; absorption ... See more keywords
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Optically transparent sound absorber with micro-perforation

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recommendations! Published in 2017 at "Journal of the Acoustical Society of America"

DOI: 10.1121/1.4988658

Abstract: More than 20 years after the first applications of micro-perforated sound absorbers in architectural acoustics there still is a growing demand of optically transpatent sound absorbers. Based on the theory of micro-perforated panel sound-absorbing constructions… read more here.

Keywords: micro perforated; perforated sound; applications various; sound absorbers ... See more keywords
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Evaluation of acoustic performance of cascaded cylindrical micro-perforated panel

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recommendations! Published in 2022 at "Proceedings of the Institution of Mechanical Engineers, Part L: Journal of Materials: Design and Applications"

DOI: 10.1177/14644207221138407

Abstract: A cylindrical micro-perforated panel (MPP) can be used to absorb the sound of a flow system in a circular duct of a vacuum cleaner. A cascaded cylindrical MPP is a special class type where two… read more here.

Keywords: cylindrical mpp; cylindrical micro; micro perforated; cascaded cylindrical ... See more keywords
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Optimisation of Multistep Cavity Configuration to Extend Absorption Bandwidth of Micro Perforated Panel Absorber

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recommendations! Published in 2018 at "Archives of Acoustics"

DOI: 10.24425/122366

Abstract: Micro perforated panel (MPP) absorber is a new form of acoustic absorbing material in comparison with porous ones. These absorbers are considered as next generation ones and the best alternative for traditional porous materials like… read more here.

Keywords: absorption; micro perforated; cavity; absorption bandwidth ... See more keywords
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A Parametric Study of the Acoustic Performance of Resonant Absorbers Made of Micro-perforated Membranes and Perforated Panels

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recommendations! Published in 2020 at "Applied Sciences"

DOI: 10.3390/app10051581

Abstract: Sound absorbing surfaces are being increasingly requested for the acoustical treatment of spaces, like offices and restaurants, where high aesthetic standards are requested. In these cases, perforated and micro-perforated panels may represent the ideal solution… read more here.

Keywords: micro perforated; study acoustic; perforated panels; acoustic performance ... See more keywords
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Investigating the Potential of Transparent Parallel-Arranged Micro-Perforated Panels (MPPs) as Sound Absorbers in Classrooms

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recommendations! Published in 2023 at "International Journal of Environmental Research and Public Health"

DOI: 10.3390/ijerph20021445

Abstract: Acoustic deficiencies due to lack of absorption in indoor spaces may sometime render significant buildings unfit for their purpose, especially the ones used as speech auditoria. This study investigates the potential of designing wideband acoustic… read more here.

Keywords: investigating potential; parallel arranged; micro perforated; perforated panels ... See more keywords
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Sound Insulation and Reflection Properties of Sonic Crystal Barrier Based on Micro-Perforated Cylinders

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recommendations! Published in 2019 at "Materials"

DOI: 10.3390/ma12172806

Abstract: A sonic crystal barrier, consisting of empty micro-perforated cylindrical shells, was built on the campus at the Universitat Politècnica de València in 2011 and characterised by using a non-standardised measurement technique. In this paper, the… read more here.

Keywords: barrier; micro perforated; sound insulation; sonic crystal ... See more keywords