The Characteristics of Noise Generated at High Noise Workshop

As various working machines have been invented due to the development of industry, it can reduce time and labor. However, the working machines cause high noise according to the purpose and dimensions so have a bad influence on workers body and emotion. If they are exposed to working machine noise for a long time, they can have deaf such as hearing loss. Therefore, it is urgently required to minimize this problem and plan basic countermeasure in workshop but studies on noise characteristics aiming at various high noise working machines are really insufficient. In this respect, this study selected four workshop and measured the noise of 31 working machines operating in the actual sites. In addition, for exact analysis, this study examined waveform and time response curves and analyzed sound pressure level and A-weighted sound level(dB(A)). Based on this result, it evaluated noise of working machines using evaluation indexes such as PSIL and NR so that it aims to suggest exact noise characteristics of working machines. As the result of evaluation, this study could evaluate exact noise characteristics of 31 working machines causing high noise and if countermeasures for sound absorption of high noise workshop are planned based on the data, a more pleasant working environment would be created by workers.