EXPERIMENTAL EVALUATION OF NOISE REDUCTION EFFECTIVENESS OF SOUNDPROOFING PANEL SYSTEM

Abstract

Measures to mitigate aviation noise at airports are increasingly critical, particularly for those near urban areas, requiring studies of effective noise reduction strategies. This article presents an experimental study evaluating and comparing the soundproofing efficiency of a 3 cm thick panel system made from different material combinations, including acoustic sonic felt, plywood, and black rubber. The study focuses on single-source noise with intensity levels equivalent to aircraft engine noise, measured at the noise measurement points recommended by ICAO. Through the shielding panel system, the noise level generated by the electrical blasting machine decreases linearly with the power of the noise source. The findings indicate that noise levels decrease proportionally as the power of the noise source is reduced. Among the tested configurations, the wood-felt-wood combination exhibited the highest sound insulation efficiency, reducing sound intensity levels by 9.48-7.58 dB, compared to 5.85-5.08 dB for the felt-wood-felt system and 5.42-3.14 dB for the uniform felt and black rubber system of the same thickness. These results provide an initial foundation for proposing effective soundproof panel combinations to mitigate both traffic and aviation noise.