Investigation of the Acoustic Performance of Bagasse

Abstract

Bagasse from sugar cane waste is an important agriculture waste and the byproduct of the sugar industry. Generally, bagasse is used as a fuel for many industries which causes environmental pollution while it can be used as a good sound-absorbing material. The acoustic absorption coefficient of the bagasse is investigated in this research work. Three different samples with different thicknesses (t = 10 mm–30 mm) and different stages are considered to conduct the experimental test. Two acoustic parameters viz. 1. The airflow resistivity and 2. The acoustic absorption coefficient is measured to investigate the performance of the bagasse fibrous material in the different frequency ranges. The influence of material thickness and air gap on the acoustical performance of bagasse material samples is discussed. The results obtained from tests show the acoustic absorption coefficient and flow resistivity increase with the increase in bagasse material thickness. Keywords: Acoustic absorption, Bagasse, Natural fibrous material, Sound absorption coefficient.