Abstract
The sound absorption performance of bio-composite micro-perforated panel (BC-MPP) made from composite polypropylene (PP) filled rice husk (PP/RH), and coconut coir (PP/CC) is presented. The sound absorption coefficient (SAC) of BC-MPP was obtained via the impedance tube two-microphone method, and the investigation was according to types of fillers, filler compositions, perforation ratio, and the air gap size. It was found that the SAC of BC-MPP PP/RH provides a higher SAC value than BC-MPP PP/CC. Furthermore, the SAC peak was observed to shift to the lower frequency spectrum when there was an increment in filler content, the distance between the perforation, and the air gap size. The SAC value from the simulation also shows a good agreement with the experimental result.
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Abbreviations
- BC-MPP :
-
Bio-composite micro-perforated panel
- PP/CC :
-
Polypropylene filled coconut coir
- PP/RH :
-
Polypropylene filled rice husk
- MPa :
-
Mega pascal
- GPa :
-
Giga pascal
- PLA :
-
Polylactic acid
- PP :
-
Polypropylene
- RH :
-
Rice husk
- SAC :
-
Sound absorption coefficient
- T g :
-
Glass transition temperature
- cm :
-
Centimeter
- Hz :
-
Hertz
- wt.% :
-
Weight percent
- % :
-
Percent
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Acknowledgments
This work is supported by Final Year Research Project under the Faculty of Mechanical Engineering and Technology and Faculty of Civil Engineering and Technology, Universiti Malaysia Perlis. We thank Universiti Malaysia Perlis for providing the necessary laboratory facilities for this work.
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Tan Wei Hong is an Associate Professor of Mechanical Engineering, Faculty of Mechanical Engineering & Technology, Universiti Malaysia Perlis (UniMAP). His research interest includes Noise Control, Acoustic Engineering, Sound Absorption, Vibration, Acoustic Simulation, Micro-perforated Panel (MPP) Sound Absorber, and Optimization.
Faridah Wahab is a Ph.D. candidate in Mechanical Engineering and Technology, Universiti Malaysia Perlis, Malaysia. She received her M.Eng. from University Malaya, Malaysia. Her research interests include composite materials, cleaner production, safety and health and noise control.
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Hong, T.W., Wahab, F., Jian, L.J. et al. Sound absorption coefficient measurement and analysis of bio-composite micro perforated panel (BC-MPP). J Mech Sci Technol 37, 3327–3334 (2023). https://doi.org/10.1007/s12206-023-2211-x
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DOI: https://doi.org/10.1007/s12206-023-2211-x