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Experiences of measuring airborne wear particles from braking materials and the wheel - Rail contact
KTH, School of Industrial Engineering and Management (ITM), Machine Design (Dept.).
KTH, School of Industrial Engineering and Management (ITM), Machine Design (Dept.).ORCID iD: 0000-0003-2489-0688
KTH, School of Industrial Engineering and Management (ITM), Machine Design (Dept.).
2012 (English)In: 9th International Conference on Contact Mechanics and Wear of Rail/Wheel Systems, CM 2012, Southwest Jiaotong University , 2012, 608-609 p.Conference paper, Published paper (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. The same condition also holds for block brakes utilized in rail vehicles. Furthermore, the wheel-rail contact is also subjected to wear processes during braking as well as during normal running. This contact also contributes to generation of 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. The present work includes results from full scale testing of rail vehicles. Particle size distribution, morphology and elemental contents are presented and discussed. 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
Southwest Jiaotong University , 2012. 608-609 p.
Keyword [en]
Deformation, Particle size analysis, Rail motor cars, Vehicle wheels, Adverse health effects, Airborne particle, Background level, Braking materials, Elemental contents, Full-scale testing, Ground concentrations, Wheel-rail contacts
National Category
Mechanical Engineering
Identifiers
URN: urn:nbn:se:kth:diva-165116Scopus ID: 2-s2.0-84906993018OAI: oai:DiVA.org:kth-165116DiVA: diva2:807736
Conference
9th International Conference on Contact Mechanics and Wear of Rail/Wheel Systems, CM 2012, 27 August 2012 through 30 August 2012, Chengdu, China
Note

QC 20150424

Available from: 2015-04-24 Created: 2015-04-23 Last updated: 2015-04-24Bibliographically approved

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Olofsson, Ulf

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  • apa
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