Sound transmission loss of multi-layered infinite micro-perforated plates

2020 ◽  
Vol 147 (1) ◽  
pp. 508-515 ◽  
Author(s):  
Hyun-Sil Kim ◽  
Sang-Ryul Kim ◽  
Bong-Ki Kim ◽  
Pyung-Sik Ma ◽  
Yun-Ho Seo
Keyword(s):  
Transmission Loss ◽  
Sound Transmission ◽  
Sound Transmission Loss ◽  
Perforated Plates

Sound transmission loss of multi-layered elastic micro-perforated plates in an impedance tube

2020 ◽  
Vol 166 ◽  
pp. 107348
Author(s):  
Hyun-Sil Kim ◽  
Pyung-Sik Ma ◽  
Bong-Ki Kim ◽  
Seong-Hyun Lee ◽  
Yun-Ho Seo
Keyword(s):  
Transmission Loss ◽  
Sound Transmission ◽  
Sound Transmission Loss ◽  
Perforated Plates ◽  
Impedance Tube

scholarly journals Analysis of the transmission loss of double-leaf panels with an equivalent spring–mass model for studs

2020 ◽  
Vol 37 ◽  
pp. 126-133
Author(s):  
Yuan-Wei Li ◽  
Chao-Nan Wang
Keyword(s):  
Distribution Curve ◽  
Transmission Loss ◽  
Sound Transmission ◽  
Experimental Results ◽  
Sound Insulation ◽  
Sound Transmission Loss ◽  
Mass Model ◽  
Steel Stud ◽  
Panel Thickness ◽  
Stiffness Distribution

Abstract The purpose of this study was to investigate the sound insulation of double-leaf panels. In practice, double-leaf panels require a stud between two surface panels. To simplify the analysis, a stud was modeled as a spring and mass. Studies have indicated that the stiffness of the equivalent spring is not a constant and varies with the frequency of sound. Therefore, a frequency-dependent stiffness curve was used to model the effect of the stud to analyze the sound insulation of a double-leaf panel. First, the sound transmission loss of a panel reported by Halliwell was used to fit the results of this study to determine the stiffness of the distribution curve. With this stiffness distribution of steel stud, some previous proposed panels are also analyzed and are compared to the experimental results in the literature. The agreement is good. Finally, the effects of parameters, such as the thickness and density of the panel, thickness of the stud and spacing of the stud, on the sound insulation of double-leaf panels were analyzed.

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