| dc.identifier.citation | Irwin JD, Graf ER 1979, Industrial Noise and Vibration Control, Prentice Hall Inc, New Jersey. NN, 2003, Guidelines of noise barrier, Barriers Environmental Protection Department Highways Department Government of the Hong Kong, Hong Kong. NN,2006 ,”Fhwa highway noise barrier design handbook”, retrieved 30 september 2006, http:// www.fhwa.dot.gov/environment/noise/3.htm NN,2006, Industrial noise control that works: sound solutions for a noisy world retrieved from www.illbruck sonex.com Sharma O, Mohanan V and Singh M 1979, Noise Emission Levels in Coal Industry, Journal of Applied Acoustic vol. 54 pp. 1-7. | en_US |
| dc.description.abstract | Modeling layout of engines in the factory is very useful to know how many dB
sound pressure level that are occur in the building in order to avoid hearing damage
of employees that are caused by noise. The objective of this research is to know how
many dB sound pressure level that are occur in the factory with engine composition
such as boiler, diesel, turbine, motor and gear box with dimension of building are 40
m length, 35 m width and 10 m height. With MATLAB analysis can be obtain that
the highest SPL is 104.7 dB and the lowest is 93.5 dB, so, this range are dangerous
for human hearing. To avoid hearing damage in this area, employees must use hearing
protector. | en_US |
