Optimization of materials in track switches (CHARMEC TS17)
Research Project , 2015 – 2020

The project aims at increasing the understanding of the long-term degradation and damage modes of different crossing materials. Guidelines for selection of crossing material will be developed, where the selected material should produce a crossing that for a given traffic scenario is stable in geometry and has a long service life and a low life cycle cost. The methodology, developed in project EU10, for prediction of rail profile degradation in track switches by integrating several cross-disciplinary numerical models and tools will be applied and extended. Robustness and computational efficiency of the methodology will be improved by formulating metamodels using, for example, Response Surface Modelling. Models will be calibrated and validated versus damaged rail profiles measured in the field. A better understanding of required production tolerances and maintenance action limits for rail profile degradation will be established.

This is a doctoral project. Mr Rostyslav Skrypnyk, Lic Eng, is the doctoral student and Professors Jens Nielsen and Magnus Ekh are the project leaders and supervisors. Dr Björn Pålsson is assistant supervisor.


Jens Nielsen (contact)

Forskningsprofessor at Chalmers, Mechanics and Maritime Sciences, Dynamics

Magnus Ekh

Full Professor at Chalmers, Industrial and Materials Science, Material and Computational Mechanics

Björn Pålsson

Senior Lecturer at Chalmers, Mechanics and Maritime Sciences, Dynamics

Rostyslav Skrypnyk

Researcher at Chalmers, Mechanics and Maritime Sciences, Dynamics


Abetong AB

Växjö, Sweden

Atkins Sverige AB

Stockholm, Sverige

Bombardier Transportation GmbH

Siegen, Germany

Faiveley Transport Nordic AB

Landskrona, Sweden

Green Cargo AB

Solna, Sweden

Lucchini Sweden AB

Surahammar, Sweden


Stockholm, Sweden

Swedish Transport Administration

Borlänge, Sweden

SweMaint AB

Göteborg, Sweden

voestalpine Schienen GmbH

Leoben, Austria

voestalpine VAE GmbH

Zeltweg, Austria


Chalmers Railway Mechanics (CHARMEC)

Funding Chalmers participation during 2015–2020

Related Areas of Advance and Infrastructure

Sustainable development

Driving Forces


Areas of Advance


More information

Project Web Page


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