Sound intensity mapping of two stroke engine by using hemispherical surface coordinate arrangement

This paper presents to investigate the noise source identification of two stroke engine for different engine speed and different general case in two stroke engine without rear cover, with rear cover, with rear cover (composite fibre), and with rear cover (acoustic foam). The experiment carried out u...

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Main Authors:	M. S. M., Sani, M. A. F. A., Rahimi, Danial, Mohamed
Format:	Conference or Workshop Item
Language:	English
Published:	IOP Publishing 2019
Subjects:	TJ Mechanical engineering and machinery TL Motor vehicles. Aeronautics. Astronautics
Online Access:	http://umpir.ump.edu.my/id/eprint/26219/ http://umpir.ump.edu.my/id/eprint/26219/ http://umpir.ump.edu.my/id/eprint/26219/1/Sound%20intensity%20mapping%20of%20two%20stroke%20engine.pdf

id	ump-26219
recordtype	eprints
spelling	ump-262192019-10-30T07:30:40Z http://umpir.ump.edu.my/id/eprint/26219/ Sound intensity mapping of two stroke engine by using hemispherical surface coordinate arrangement M. S. M., Sani M. A. F. A., Rahimi Danial, Mohamed TJ Mechanical engineering and machinery TL Motor vehicles. Aeronautics. Astronautics This paper presents to investigate the noise source identification of two stroke engine for different engine speed and different general case in two stroke engine without rear cover, with rear cover, with rear cover (composite fibre), and with rear cover (acoustic foam). The experiment carried out utilizing by sound intensity in hemispherical surface arrangement and sound intensity mapping method for engine speed at range 800 to 4800 revolution per minute (rpm). A single module of microphone is used to identify sound power level in hemispherical surface coordinate arrangement while a pair microphone in sound intensity mapping. This method can be applied on-site rather than in an anechoic chamber as long as the background noises are stationary. The sound power level is within 73.7 dB to 81.3 dB in the range of engine speed. The noise level is increasing with engine speed. Rear cover should be applied in order to reduce the sound power level. The project delivers the reliable input for the engineering practice to reduce engine noise level. IOP Publishing 2019-04-15 Conference or Workshop Item PeerReviewed pdf en cc_by http://umpir.ump.edu.my/id/eprint/26219/1/Sound%20intensity%20mapping%20of%20two%20stroke%20engine.pdf M. S. M., Sani and M. A. F. A., Rahimi and Danial, Mohamed (2019) Sound intensity mapping of two stroke engine by using hemispherical surface coordinate arrangement. In: IOP Conference Series: Materials Science and Engineering, 1st South Aceh International Conference on Engineering and Technology (SAICOET), 8-9 December 2018 , Politeknik Aceh Selatan Campus, Indonesia. pp. 1-9., 506 (012060). ISSN 1757-8981 (Print), 1757-899X (Online) https://doi.org/10.1088/1757-899X/506/1/012060
repository_type	Digital Repository
institution_category	Local University
institution	Universiti Malaysia Pahang
building	UMP Institutional Repository
collection	Online Access
language	English
topic	TJ Mechanical engineering and machinery TL Motor vehicles. Aeronautics. Astronautics
spellingShingle	TJ Mechanical engineering and machinery TL Motor vehicles. Aeronautics. Astronautics M. S. M., Sani M. A. F. A., Rahimi Danial, Mohamed Sound intensity mapping of two stroke engine by using hemispherical surface coordinate arrangement
description	This paper presents to investigate the noise source identification of two stroke engine for different engine speed and different general case in two stroke engine without rear cover, with rear cover, with rear cover (composite fibre), and with rear cover (acoustic foam). The experiment carried out utilizing by sound intensity in hemispherical surface arrangement and sound intensity mapping method for engine speed at range 800 to 4800 revolution per minute (rpm). A single module of microphone is used to identify sound power level in hemispherical surface coordinate arrangement while a pair microphone in sound intensity mapping. This method can be applied on-site rather than in an anechoic chamber as long as the background noises are stationary. The sound power level is within 73.7 dB to 81.3 dB in the range of engine speed. The noise level is increasing with engine speed. Rear cover should be applied in order to reduce the sound power level. The project delivers the reliable input for the engineering practice to reduce engine noise level.
format	Conference or Workshop Item
author	M. S. M., Sani M. A. F. A., Rahimi Danial, Mohamed
author_facet	M. S. M., Sani M. A. F. A., Rahimi Danial, Mohamed
author_sort	M. S. M., Sani
title	Sound intensity mapping of two stroke engine by using hemispherical surface coordinate arrangement
title_short	Sound intensity mapping of two stroke engine by using hemispherical surface coordinate arrangement
title_full	Sound intensity mapping of two stroke engine by using hemispherical surface coordinate arrangement
title_fullStr	Sound intensity mapping of two stroke engine by using hemispherical surface coordinate arrangement
title_full_unstemmed	Sound intensity mapping of two stroke engine by using hemispherical surface coordinate arrangement
title_sort	sound intensity mapping of two stroke engine by using hemispherical surface coordinate arrangement
publisher	IOP Publishing
publishDate	2019
url	http://umpir.ump.edu.my/id/eprint/26219/ http://umpir.ump.edu.my/id/eprint/26219/ http://umpir.ump.edu.my/id/eprint/26219/1/Sound%20intensity%20mapping%20of%20two%20stroke%20engine.pdf
first_indexed	2023-09-18T22:40:42Z
last_indexed	2023-09-18T22:40:42Z
_version_	1777416894888804352

Sound intensity mapping of two stroke engine by using hemispherical surface coordinate arrangement

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