Design of Multiple Parallel-Arranged Perforated Panel Absorbers for Low Frequency Sound Absorption
| العنوان: | Design of Multiple Parallel-Arranged Perforated Panel Absorbers for Low Frequency Sound Absorption |
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| المؤلفون: | Qianqian Wu, Ludi Kang, Xin Li, Bilong Liu |
| المصدر: | Materials, Vol 12, Iss 13, p 2099 (2019) Materials Volume 12 Issue 13 |
| بيانات النشر: | MDPI AG, 2019. |
| سنة النشر: | 2019 |
| مصطلحات موضوعية: | Absorption (acoustics), Acoustics, Infrasound, 02 engineering and technology, 01 natural sciences, lcsh:Technology, Article, Noise reduction coefficient, 0103 physical sciences, perforated panel, General Materials Science, lcsh:Microscopy, 010301 acoustics, lcsh:QC120-168.85, Physics, lcsh:QH201-278.5, lcsh:T, Bandwidth (signal processing), 021001 nanoscience & nanotechnology, low frequency absorption, lcsh:TA1-2040, lcsh:Descriptive and experimental mechanics, absorber array, lcsh:Electrical engineering. Electronics. Nuclear engineering, 0210 nano-technology, lcsh:Engineering (General). Civil engineering (General), lcsh:TK1-9971, Body orifice |
| الوصف: | A particular structure that consists of four parallel-arranged perforated panel absorbers (PPAs) is proposed for the low frequency sound absorption within a constraint space. The apertures of the perforated panels are set to &ge 1.5 mm, and the number of orifices is much less and therefore easier to be produced in comparison with that of the micro perforated panel (MPP). A simple approximation model by using acoustic-electrical analogy is described to calculate the sound absorption coefficient of such device subject to normal wave incidence. Theoretical and experimental results demonstrate that the device can provide more than one octave sound absorption bandwidth at low frequencies. |
| وصف الملف: | application/pdf |
| اللغة: | English |
| تدمد: | 1996-1944 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fc84d5f942208a09b0814b229552efd1 https://www.mdpi.com/1996-1944/12/13/2099 |
| حقوق: | OPEN |
| رقم الأكسشن: | edsair.doi.dedup.....fc84d5f942208a09b0814b229552efd1 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 19961944 |
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