On the impact of pad material ingredients on particulate wear emissions from disc brakes
Varriale, Francesco LU ; Carlevaris, Davide ; Wahlström, Jens LU
; Malmborg, Vilhelm
LU
and Lyu, Yezhe
LU
(2023)
In Results in Engineering
19.
- Abstract
Besides friction and wear, airborne particle emission has become a central parameter when evaluating disc brake performance due to its potential adverse health effects as component of ambient air pollution. The pad friction material of brake system is composed of a mixture of ingredients grouped into four material categories: abrasives, reinforcing fibres, lubricants, and fillers. Some other ingredients which do not typically belong to aforementioned categories can be attributed to “fixed material”, such as aramid fibre, which is usually added into brake pad to harmonize the overall tribological properties. There is a gap of knowledge about how one ingredient from one category contributes to the emissions of particle number (PN) and... (More)
Besides friction and wear, airborne particle emission has become a central parameter when evaluating disc brake performance due to its potential adverse health effects as component of ambient air pollution. The pad friction material of brake system is composed of a mixture of ingredients grouped into four material categories: abrasives, reinforcing fibres, lubricants, and fillers. Some other ingredients which do not typically belong to aforementioned categories can be attributed to “fixed material”, such as aramid fibre, which is usually added into brake pad to harmonize the overall tribological properties. There is a gap of knowledge about how one ingredient from one category contributes to the emissions of particle number (PN) and mass (PM2.5, PM10). To investigate this, one ingredient from each category was chosen and produced as pins. As a reference, pins made of a commercial European brake friction material were also produced. The pins were tested using a pin-on-disc tribometer designed for airborne emission studies. Coefficient of friction, particle mass and number concentrations were measured during the tests. The results indicate that the abrasive and metal fibre have PN, PM2.5, and PM10 emission factors that are orders of magnitude higher than the lubricant and aramid fibre.
(Less)
- author
- Varriale, Francesco
LU
; Carlevaris, Davide
; Wahlström, Jens
LU
; Malmborg, Vilhelm
LU
and Lyu, Yezhe
LU
- organization
- publishing date
- 2023-09
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- Airborne particle emissions, Brake materials, Coefficient of friction, Ingredient, Pin-on-Disc
- in
- Results in Engineering
- volume
- 19
- article number
- 101397
- publisher
- Elsevier
- external identifiers
-
- scopus:85169793480
- ISSN
- 2590-1230
- DOI
- 10.1016/j.rineng.2023.101397
- language
- English
- LU publication?
- yes
- additional info
- Publisher Copyright: © 2023 The Authors
- id
- 2946b4e0-edc8-41b6-b5ae-ec8e9221f5a4
- date added to LUP
- 2023-09-12 14:08:37
- date last changed
- 2023-10-05 14:58:12
@article{2946b4e0-edc8-41b6-b5ae-ec8e9221f5a4,
abstract = {{<p>Besides friction and wear, airborne particle emission has become a central parameter when evaluating disc brake performance due to its potential adverse health effects as component of ambient air pollution. The pad friction material of brake system is composed of a mixture of ingredients grouped into four material categories: abrasives, reinforcing fibres, lubricants, and fillers. Some other ingredients which do not typically belong to aforementioned categories can be attributed to “fixed material”, such as aramid fibre, which is usually added into brake pad to harmonize the overall tribological properties. There is a gap of knowledge about how one ingredient from one category contributes to the emissions of particle number (PN) and mass (PM<sub>2.5</sub>, PM<sub>10</sub>). To investigate this, one ingredient from each category was chosen and produced as pins. As a reference, pins made of a commercial European brake friction material were also produced. The pins were tested using a pin-on-disc tribometer designed for airborne emission studies. Coefficient of friction, particle mass and number concentrations were measured during the tests. The results indicate that the abrasive and metal fibre have PN, PM<sub>2.5</sub>, and PM<sub>10</sub> emission factors that are orders of magnitude higher than the lubricant and aramid fibre.</p>}},
author = {{Varriale, Francesco and Carlevaris, Davide and Wahlström, Jens and Malmborg, Vilhelm and Lyu, Yezhe}},
issn = {{2590-1230}},
keywords = {{Airborne particle emissions; Brake materials; Coefficient of friction; Ingredient; Pin-on-Disc}},
language = {{eng}},
publisher = {{Elsevier}},
series = {{Results in Engineering}},
title = {{On the impact of pad material ingredients on particulate wear emissions from disc brakes}},
url = {{http://dx.doi.org/10.1016/j.rineng.2023.101397}},
doi = {{10.1016/j.rineng.2023.101397}},
volume = {{19}},
year = {{2023}},
}