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http://dx.doi.org/10.5762/KAIS.2019.20.9.240

Analysis of sound power level of high-noise construction machinery excavator  

Park, Hyung-Kyu (Indoor Environment & Noise Research Division, National Institute of Environmental Research)
Jung, Joon Sig (Nakdong River Basin Environmental Office)
Publication Information
Journal of the Korea Academia-Industrial cooperation Society / v.20, no.9, 2019 , pp. 240-246 More about this Journal
Abstract
The noise generated by construction machinery operating at construction sites is a major cause of environmental disputes with nearby residents. To reduce construction site noise, low noise construction machinery and low noise methods are recommended to be used first. In addition, the possible noise should be predicted and preventive measures suitable for the noise source should be taken. This study analyzed the sound power level of an excavator, which is used most frequently at construction sites. The sound power level of 297 excavators sold in Korea after 2008 were analyzed and the sound power level was classified according to the type, output (kW), and production site of the excavator engine based on the measured data. As a result, the sound power level decreased by 1 dBA depending on the change in engine type and the sound power level increased by approximately 3 dB (A) when the engine output was doubled. In addition, the sound power level was low in small-sized products of less than 55 kW for overseas products and medium and small-sized products of 55 to 104 kW for domestic products.
Keywords
Excavator; Construction Machine; Sound Power Level; Noise; ANOVA;
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