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Normal Incidence of Sound Transmission Loss from Perforated Plates with Micro and Macro Size Holes
Joint Authors
Source
Advances in Acoustics and Vibration
Issue
Vol. 2014, Issue 2014 (31 Dec. 2014), pp.1-12, 12 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2014-04-17
Country of Publication
Egypt
No. of Pages
12
Main Subjects
Abstract EN
This paper studies the sound transmission loss of perforated panels and investigates the effect of the hole diameter on the sound insulation performance under normal incidence of acoustic loading.
The hole diameters are distinguished into micro (submillimeter) and macro (millimeter) sizes.
In general, the transmission loss reduces as the perforation ratio is increased.
However, by retaining the perforation ratio, it is found that the transmission loss increases as the hole diameter is reduced for a perforate with micro holes due to the effect of resistive part in the hole impedance, which is contrary to the results for those with the macro holes.
Both show similar trend at high frequency where the fluid behavior inside the hole is inertial.
Simple analytical formulae for engineering purpose are provided.
Validation of the models with measurement data also gives good agreement.
American Psychological Association (APA)
Putra, Azma& Ismail, A. Y.. 2014. Normal Incidence of Sound Transmission Loss from Perforated Plates with Micro and Macro Size Holes. Advances in Acoustics and Vibration،Vol. 2014, no. 2014, pp.1-12.
https://search.emarefa.net/detail/BIM-479373
Modern Language Association (MLA)
Putra, Azma& Ismail, A. Y.. Normal Incidence of Sound Transmission Loss from Perforated Plates with Micro and Macro Size Holes. Advances in Acoustics and Vibration No. 2014 (2014), pp.1-12.
https://search.emarefa.net/detail/BIM-479373
American Medical Association (AMA)
Putra, Azma& Ismail, A. Y.. Normal Incidence of Sound Transmission Loss from Perforated Plates with Micro and Macro Size Holes. Advances in Acoustics and Vibration. 2014. Vol. 2014, no. 2014, pp.1-12.
https://search.emarefa.net/detail/BIM-479373
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-479373