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Exploring the Sound Absorption and Sound Insulation Capabilities of Natural Fiber Composites: Nipa Palm Peduncle Fiber


Paper Type 
Contributed Paper
Title 
Exploring the Sound Absorption and Sound Insulation Capabilities of Natural Fiber Composites: Nipa Palm Peduncle Fiber
Author 
Purintorn Chanlert, Polphat Ruamcharoen and Thanate Kerdkaew
Email 
Purintorn Chanlert, Polphat Ruamcharoen [a] and Thanate Kerdkaew
Abstract:

     This study investigates the acoustic properties of nipa palm peduncle fiber (NPPF) composites, a promising natural fiber with a tensile strength of 277 MPa, a yield strength of 49.0 MPa, and a Young’s modulus of 12.0 GPa. We focus on understanding how NPPF’s physical characteristics influence its sound absorption and insulation capabilities. Through experimental analysis, we found that the sample density directly affects the sound absorption coefficient (SAC) and transmission loss (TL), with denser samples exhibiting better noise reduction. Using the Johnson-Champoux-Allard-Lafarge (JCAL) model, we correlated these acoustic properties with the material’s non-acoustic parameters including flow resistivity), open porosity (), tortuosity (α), viscous (Λ) and thermal (Λ' ) characteristic lengths along with static thermal permeability (k0'). The results validate the JCAL model’s predictions, offering insights into designing effective, eco-friendly acoustic materials. This study not only highlights NPPF composites’ notable acoustic performance but also underlines their potential for contributing to sustainable development.

Article ID
e2024034
Received Date 
2023-10-31
Revised Date 
2024-03-19
Accepted Date 
2024-03-20
Full Text 
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Keyword 
natural fiber, Nipa palm, sound absorption coefficient, sound transmission loss, Johnson-Champoux-Allard-Lafarge (JCAL) model
Volume 
Vol.51 No.3 (May 2024)
DOI 
https://doi.org/10.12982/CMJS.2024.034
SDGs
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