INTRODUCING THE STANDARD AND CHART TO MEASURE AND CONTROL THE MOTORCYCLE NOISE LEVEL

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NASSIRI P.; MONAZZAM M.R.; HOSSEINI GOUSHEH N.; AZAM K.; FARHANG DEHGHAN S.

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Journal: Iranian Journal of Health and Environment Year:2012 | Volume:4 | Issue:4 (14) Page(s): 461-470

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Title

INTRODUCING THE STANDARD AND CHART TO MEASURE AND CONTROL THE MOTORCYCLE NOISE LEVEL

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Keywords

NOISE LEVELQ3

MOTOCYCLEQ3

STANDARDQ2

Abstract

Background and Objectives: Sound of motorcycles plays an important role in noise pollution in big cities. This is due to the lack of national law or STANDARDs to control the noise of domestic and also imported motorcycles.This study tries to introduce a practical limit value in different stage of motorcycle life cycle by assessing their noise pollution.Materials and Methods: First the motorcycles noise STANDARDs at different countries were studied and they were compared with the results from NOISE LEVEL of 622 motorcycles in 3 different groups. The sample volume in each group corresponds to the amount of their annual production rate. Then using statistical tests, a limit was determined in which 90% of the domestic motorcycles can be covered. The limit is proposed as the STANDARD for domestic motorcycle noise.Results: The limit for motorcycles of groups 1, 2 and 3 were 84, 86 and 87 dB (A), respectively in the TA stage. For the COP stage (Conformity of Production), the limit increases according to certain formula. In the end, a flowchart was proposed as a STANDARD method for measuring the sound of motorcycles in the TA and COP stages was proposed.Conclusion: NOISE LEVEL of the domestic motorcycles is at least 9 dB (A) higher than the noise limit value of European motorcycle. If European limit value is considered for producing the national motorcycle, 90% of them will get out of production cycle and this would not be practical.

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APA: Copy

NASSIRI, P., MONAZZAM, M.R., HOSSEINI GOUSHEH, N., AZAM, K., & FARHANG DEHGHAN, S.. (2012). INTRODUCING THE STANDARD AND CHART TO MEASURE AND CONTROL THE MOTORCYCLE NOISE LEVEL. IRANIAN JOURNAL OF HEALTH AND ENVIRONMENT, 4(4 (14)), 461-470. SID. https://sid.ir/paper/145890/en

Vancouver: Copy

NASSIRI P., MONAZZAM M.R., HOSSEINI GOUSHEH N., AZAM K., FARHANG DEHGHAN S.. INTRODUCING THE STANDARD AND CHART TO MEASURE AND CONTROL THE MOTORCYCLE NOISE LEVEL. IRANIAN JOURNAL OF HEALTH AND ENVIRONMENT[Internet]. 2012;4(4 (14)):461-470. Available from: https://sid.ir/paper/145890/en

IEEE: Copy

P. NASSIRI, M.R. MONAZZAM, N. HOSSEINI GOUSHEH, K. AZAM, and S. FARHANG DEHGHAN, “INTRODUCING THE STANDARD AND CHART TO MEASURE AND CONTROL THE MOTORCYCLE NOISE LEVEL,” IRANIAN JOURNAL OF HEALTH AND ENVIRONMENT, vol. 4, no. 4 (14), pp. 461–470, 2012, [Online]. Available: https://sid.ir/paper/145890/en

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