Microperforated Panel Made by Biodegradable Natural Fiber Composite for Acoustic Application

Due to the unique sound absorption characteristics of microperforated panel (MPP), many acousticians start to do further research on how to improve its performances as it may outperform the sound absorption performance of conventional porous sound absorber. Most of the conventional MPP available is made out of common metal based material such as aluminium and steel. The production of metal based material is known to be very costly and harmful to the environment. To overcome that issue, natural fibre composite is used on this study for the production of biodegradable natural fibre composite micro-perforated panel (BNFC-MPP). BNFC-MPP was produced by employing conventional method such as mixing, pelletizing, drilling, and hot compression process. The assessment on the sound absorption of BNFC-MPP was done and determined by using impedance tube. The sound absorption performance of BNFC-MPP will be analysed and compared with traditional MPP. The distinct difference between BNFC-MPP and traditional MPP was that BNFC-MPP possessed porous structure that conventional MPP did not exhibit. It can be noted that BNFC-MPP has excellent sound absorption properties mostly due to the porous structure of BNFC-MPP. BNFC-MPP is also more sustainable due to its biodegradability properties as it does not impose any adverse effect towards the nature.