An analysis of acoustical absorption characteristics of agro-waste materials

Authors : Festus Adda NAPHTALİ, Adinife AZODO, Joseph John AKPAN, Smith Okwuchi ONYEKWERE

Pages : 104-114

View : 14 | Download : 23

Publication Date : 2022-12-31

Article Type : Research Paper

Abstract :Acoustical materials play several important roles in acoustic engineering such as industrial noise control, noise control of a room, studio and automotive acoustics. This study presents research on the sound absorption properties of recycled agro-waste composite materials. The raw materials used to prepare these composite panels are wastes generated from rice, sugar cane, groundnut, oil palm, and corn. Starch was the matrix material thereby making the composite fully green. Five sound absorption composite panels were produced for the five categories of agro waste by compression moulding method. Sound absorption capacity of the produced composite panels relayed a quality sound absorption coefficients α ranging from 0.72 – 0.86. Increase in thickness of the composite panels resulted to lower sound absorption coefficient which indicates that thickness is an important factor in determining the sound absorption capacity of agro waste based composites. The agro-waste material approach in sound control was effective, cost beneficial and offers an environmentally friendly solution to sound control.
Keywords : Sound level, agro waste materials, sound absorption panel, sound absorption coefficient, noise