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Influence of friction material composition on airborne wear particle emissions from dry clutches

Hjelm, Rikard LU ; Ek, Martin LU orcid ; Tu, Minghui ; Bard, Lucas ; Mancini, Alessandro ; Tsyupa, Bozhena ; Lyu, Yezhe LU orcid ; Olofsson, Ulf and Wahlström, Jens LU orcid (2025) In Results in Engineering 27.
Abstract

Airborne wear particle emissions from dry clutches have been investigated in terms of particle mass and number concentration, size distribution, and chemical composition of a single clutch material. This paper presents a detailed continuation of the investigation. Clutch plates of two different friction materials, i.e., from different manufacturers but for the same automobile applications, are tested and compared under different running conditions. Online measurements are made of number and mass concentration as well as size distribution. Chemical composition is analysed of both collected particles and used and unused clutch disc surfaces. Particle morphology is studied using a transmission electron microscope. Results indicate that... (More)

Airborne wear particle emissions from dry clutches have been investigated in terms of particle mass and number concentration, size distribution, and chemical composition of a single clutch material. This paper presents a detailed continuation of the investigation. Clutch plates of two different friction materials, i.e., from different manufacturers but for the same automobile applications, are tested and compared under different running conditions. Online measurements are made of number and mass concentration as well as size distribution. Chemical composition is analysed of both collected particles and used and unused clutch disc surfaces. Particle morphology is studied using a transmission electron microscope. Results indicate that emission profiles of the two materials are different in terms of concentrations and composition, but both materials emit fine and ultrafine particles, and the emitted particles consist of elements like Al, Fe, Cu, and Ba.

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author
; ; ; ; ; ; ; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Chemical composition, Clutch, Electron microscopy, Particle concentration, Size distribution
in
Results in Engineering
volume
27
article number
106128
pages
11 pages
publisher
Elsevier
external identifiers
  • scopus:105009912211
ISSN
2590-1230
DOI
10.1016/j.rineng.2025.106128
language
English
LU publication?
yes
id
1d116498-da22-40d0-a4de-824a515f4263
date added to LUP
2025-07-31 08:24:12
date last changed
2025-07-31 16:37:49
@article{1d116498-da22-40d0-a4de-824a515f4263,
  abstract     = {{<p>Airborne wear particle emissions from dry clutches have been investigated in terms of particle mass and number concentration, size distribution, and chemical composition of a single clutch material. This paper presents a detailed continuation of the investigation. Clutch plates of two different friction materials, i.e., from different manufacturers but for the same automobile applications, are tested and compared under different running conditions. Online measurements are made of number and mass concentration as well as size distribution. Chemical composition is analysed of both collected particles and used and unused clutch disc surfaces. Particle morphology is studied using a transmission electron microscope. Results indicate that emission profiles of the two materials are different in terms of concentrations and composition, but both materials emit fine and ultrafine particles, and the emitted particles consist of elements like Al, Fe, Cu, and Ba.</p>}},
  author       = {{Hjelm, Rikard and Ek, Martin and Tu, Minghui and Bard, Lucas and Mancini, Alessandro and Tsyupa, Bozhena and Lyu, Yezhe and Olofsson, Ulf and Wahlström, Jens}},
  issn         = {{2590-1230}},
  keywords     = {{Chemical composition; Clutch; Electron microscopy; Particle concentration; Size distribution}},
  language     = {{eng}},
  publisher    = {{Elsevier}},
  series       = {{Results in Engineering}},
  title        = {{Influence of friction material composition on airborne wear particle emissions from dry clutches}},
  url          = {{http://dx.doi.org/10.1016/j.rineng.2025.106128}},
  doi          = {{10.1016/j.rineng.2025.106128}},
  volume       = {{27}},
  year         = {{2025}},
}