OPF are leftovers from post-harvesting and trimming, and the amount produced largely depends on the age of the palm tree. The amount of OPF waste generated in the country has significantly increased from 85,488,280 tonnes in 2010 to 145,865,970 tonnes in 2020 and continues to increase, covering an area of approximately 14,586,597 hectares. Since they are currently regarded as the waste product of oil palm fields, their biomass remains underutilised. Oil palm fronds (OPF) are one of Indonesia’s most abundantly available agricultural by-products. Therefore, OPF fibres can be used to create sound-absorbing composite particleboards. The results also indicated that the absorption frequency and the degree of α n significantly increased as the bulk density decreased. This occurred when the bulk density of the OPF composite particleboards ranged between 0.3–0.4 g/cm 3, and the particle size varied between medium to coarse. The findings reveal thatα n exceeded 0.45 at 1000 Hz and could reach 0.95 above 3.3 kHz. The effects of particle size and bulk density were also evaluated. The absorption coefficient of normal incidence sound (α n) was tested using an impedance tube. The particleboards were produced with three particle sizes and four target densities. The materials used were OPF particles and urea-formaldehyde was used as an adhesive. Therefore, this study aimed to investigate the sound absorption performance of OPF fibre-reinforced composite under normal incidence sound. ![]() ![]() The present study deals with the sound absorption performance of natural fibres from the oil palm frond (OPF), mainly considered agricultural waste.
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