Disc brake squeal generation during dry and wet conditions

Brake squeal, is an annoying sound that occurs in the frequency range of 1 to 20 k Hz and typically measures above 70 dB(A). To date, there have been extensive works carried out to identify significant parameters or mechanisms that trigger squeal occurrences based on various disciplinces such as str...

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Main Author:	Waheed, Muneer Naji
Format:	Thesis
Language:	English
Published:	2014
Subjects:	TJ Mechanical engineering and machinery
Online Access:	http://eprints.utm.my/id/eprint/53439/25/MuneerNajiWaheedMFKM2014.pdf
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id	my-utm-ep.53439
record_format	uketd_dc
spelling	my-utm-ep.534392020-07-14T03:54:10Z Disc brake squeal generation during dry and wet conditions 2014-06 Waheed, Muneer Naji TJ Mechanical engineering and machinery Brake squeal, is an annoying sound that occurs in the frequency range of 1 to 20 k Hz and typically measures above 70 dB(A). To date, there have been extensive works carried out to identify significant parameters or mechanisms that trigger squeal occurrences based on various disciplinces such as structural dynamics and tribology. However, it seems that there is a limited study conducted to relate brake squeal with wet conditions of the brake pad. Thus, this work attempts to explore disc brake squeal generation and its establishment during the dry and wet conditions. A series of brake squeal tests is performed according to SAE J2521 test procedure using laboratory brake noise test rig. Three wet conditions are considered that based on levels of water absorption in the brake pad. It is found that the dry brake pad produces less numbers of squeal occurrence compared to the three wet pads. The dry pad records sound pressure level below 100 dB(A) while all three wet pads produce squeal sound more than 100 dB(A). It is observed that brake squeal can also be triggered and influenced by different operating and environment conditions due to dry and wet brake pads. The wet pads are producing brake squeal at wide range of operating and environment conditions compared to the dry pad. 2014-06 Thesis http://eprints.utm.my/id/eprint/53439/ http://eprints.utm.my/id/eprint/53439/25/MuneerNajiWaheedMFKM2014.pdf application/pdf en public http://dms.library.utm.my:8080/vital/access/manager/Repository/vital:85136 masters Universiti Teknologi Malaysia, Faculty of Mechanical Engineering Faculty of Mechanical Engineering
institution	Universiti Teknologi Malaysia
collection	UTM Institutional Repository
language	English
topic	TJ Mechanical engineering and machinery
spellingShingle	TJ Mechanical engineering and machinery Waheed, Muneer Naji Disc brake squeal generation during dry and wet conditions
description	Brake squeal, is an annoying sound that occurs in the frequency range of 1 to 20 k Hz and typically measures above 70 dB(A). To date, there have been extensive works carried out to identify significant parameters or mechanisms that trigger squeal occurrences based on various disciplinces such as structural dynamics and tribology. However, it seems that there is a limited study conducted to relate brake squeal with wet conditions of the brake pad. Thus, this work attempts to explore disc brake squeal generation and its establishment during the dry and wet conditions. A series of brake squeal tests is performed according to SAE J2521 test procedure using laboratory brake noise test rig. Three wet conditions are considered that based on levels of water absorption in the brake pad. It is found that the dry brake pad produces less numbers of squeal occurrence compared to the three wet pads. The dry pad records sound pressure level below 100 dB(A) while all three wet pads produce squeal sound more than 100 dB(A). It is observed that brake squeal can also be triggered and influenced by different operating and environment conditions due to dry and wet brake pads. The wet pads are producing brake squeal at wide range of operating and environment conditions compared to the dry pad.
format	Thesis
qualification_level	Master's degree
author	Waheed, Muneer Naji
author_facet	Waheed, Muneer Naji
author_sort	Waheed, Muneer Naji
title	Disc brake squeal generation during dry and wet conditions
title_short	Disc brake squeal generation during dry and wet conditions
title_full	Disc brake squeal generation during dry and wet conditions
title_fullStr	Disc brake squeal generation during dry and wet conditions
title_full_unstemmed	Disc brake squeal generation during dry and wet conditions
title_sort	disc brake squeal generation during dry and wet conditions
granting_institution	Universiti Teknologi Malaysia, Faculty of Mechanical Engineering
granting_department	Faculty of Mechanical Engineering
publishDate	2014
url	http://eprints.utm.my/id/eprint/53439/25/MuneerNajiWaheedMFKM2014.pdf
_version_	1747817555518554112

Disc brake squeal generation during dry and wet conditions

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