Impact of Sound Insulation in a Combine Cabin

Abstract

Purpose: Recently, environmental pollution and safety problems in agricultural production have become important issues. Initially, bio-production machines focused on high production efficiency rather than workers’ safety and comfort, but thistrend slowly has changed as time went on. Methods: This study was carried out to identify sound efficiently and reliably fornoise reduction by using a combine cabin model. Ethylene propylene diene monomer (M-class) rubber (EPDM) was appliedto improve noise reduction performance from parts connected directly to the front, rear, left side, and bottom side of thecabin. Results: As a result, an average noise reduction of 1.85 dB was achieved in the normal hearing range between 500 Hzto 2 kHz. Conclusions: Reducing the cabin noise levels can reduce a worker's fatigue, improve working environment, andcontribute to future low-noise and high-quality cabin environment.