An Experimental Study on the Effect of Natural Fillers on the Acoustic Isolation of Composite Materials

Dania Ahmed Salim; Farag Mahel Mohammed; Ahmed Hameed Reja

doi:10.37934/sej.13.1.2737

Authors

Dania Ahmed Salim Electromechanical Engineering Department, University of technology, Baghdad, Iraq
Farag Mahel Mohammed Electromechanical Engineering Department, University of technology, Baghdad, Iraq
Ahmed Hameed Reja Electromechanical Engineering Department, University of technology, Baghdad, Iraq

DOI:

https://doi.org/10.37934/sej.13.1.2737

Keywords:

Sound insulation, sound pressure level, compassed materials, plant west

Abstract

The effect of natural fillers on the sound insulation property was studied experimentally. Four types of plant residues (orange, lemon, pomegranate, as well as caper tree leaves) are selected for low and high frequencies (100-8000) Hz. The waste was dried, ground and screened separately to produce the natural filler with a particle size of (300 and 600) μm. The most important stage in designing the experiment is manufacturing samples of the materials used with thickness (3 and 6) mm. The sound insulation property of the soundproof box was examined at low and high frequencies. The results showed that all plant waste samples had high sound absorption by measuring the sound pressure level in the sound receiving chamber of the test box. Pomegranate peels gave the highest percentage of sound pressure reduction, reaching (46.7%), followed by lemon peels (41.7%), then orange peels (30%).