Author : A.B. Lingemali and R. T. Vyavahare

This research was conducted to study acoustic noise isolation performance of coco peat and recycled rubber composite material, which has high potential to be used for sound absorbing material. The sample was tested with different composition ratios. The composition ratios varied from 0% to 100 % of coco peat and recycled rubber in the steps of 20%. The samples were manufactured by using mold that was made by using MS sheet with the 5mm thickness. These samples were tested by using DEWE-43 instrument used for finding the sound absorption coefficients. Similarly, simulation was conducted on Ansys software for finding the sound absorption coefficient. For composition 40% of coco peat & 60% of recycled rubber at the various frequencies such as 250,500,750 and 1000 Hz at constant sound pressure source of 100db, the sound absorption coefficient levels achieved were 43.7db, 10.2db, 9.7db and 0.3db respectively for DEWE-43 instruments. These results are better as compared to Baggas panels. These results indicate that manufactured composite panels are promising to be used as sound absorbing material with low cost, light weight, and biodegradable.

Keyword: Sound Absorption; Composite Material; Recycled Rubber.