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Experiences of measuring airborne wear particles from braking materials and wheel-rail contact
KTH, School of Industrial Engineering and Management (ITM), Machine Design (Dept.), Machine Elements. (KTH railway group)
KTH, School of Industrial Engineering and Management (ITM), Machine Design (Dept.), Machine Elements. (KTH railway group)ORCID iD: 0000-0003-2489-0688
KTH, School of Industrial Engineering and Management (ITM), Machine Design (Dept.), Machine Elements.
2012 (English)Conference paper, Oral presentation only (Refereed)
Abstract [en]

During braking both of the discs and pads of disc brakes are worn. Since disc brakes are not sealed, some of the generated wear particles can become airborne.  Wheel-rail is also subjected to wear process during braking as well as normal running. They also contribute to generate airborne particles. Several studies have found an association between adverse health effects and the concentration of particles in the atmosphere, so it is of interest to improve our knowledge of the airborne wear particles generated by disc brakes.

The present work includes results from full scale testing of rail vehicles. Particle size distribution, morphology and elemental contents are presented and discussed for different combinations of disc and pad materials. Due to high back ground concentration levels in field tests, dedicated laboratory test set ups on a reduced scale were designed and utilized for airborne particle studies with zero background level.

Promising correlation between field test and the lab set up is identified. Different ways of using this test set up for evaluating how the composition of the airborne particles is classified with respect to their health effects are discussed. Furthermore, different ways of using the proposed method to rank and to quantify airborne particle emission factors are presented.

Place, publisher, year, edition, pages
2012.
Keyword [en]
Non-exhaust emission, railway, airborne, particle, PM10, PM2.5
National Category
Tribology Other Environmental Engineering
Research subject
The KTH Railway Group - Tribology
Identifiers
URN: urn:nbn:se:kth:diva-115261OAI: oai:DiVA.org:kth-115261DiVA: diva2:588399
Conference
17th Nordic Seminar on Railway Technology.
Note

QC 20130612

Available from: 2013-01-15 Created: 2013-01-15 Last updated: 2013-06-12Bibliographically approved

Open Access in DiVA

No full text

Other links

http://www.railwaygroup.kth.se/polopoly_fs/1.347152!/Menu/general/column-content/attachment/Nordic2012%20ParticleFinal.pdf

Authority records BETA

Olofsson, Ulf

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CiteExportLink to record
Permanent link

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Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf