A wireless railway catenary structural monitoring system: Full-scale case study
2016 (English)In: Case Studies in Engineering Failure Analysis, ISSN 2213-624X, E-ISSN 2214-3998, Vol. 6, 22-30 p.Article in journal (Refereed) Published
Full-scale structural measurements of new and existing railway catenary systems are becoming increasingly important due to continually increasing train speeds and the resulting consequences. Higher speeds lead to increased loads and greater structural dynamic responses, necessitating that both static and dynamic regulations be fulfilled. Sampling directly on railway catenary sections is necessary to assess their structural behaviour. The results can both be analysed directly and be used for validating and/or improving numerical models, which in turn can be used to explore the structural response at higher speeds. This case study presents and explores a newly developed wireless sensor system that includes multiple sensors that can be mounted arbitrarily on any of the wires in a catenary system. All sensors synchronously sample accelerations and rotational velocities over a range of up to 1400 m. This paper shows the results of mounting the developed sensor system and sampling the data of an existing railway catenary section at the Hovin station in Norway. Sampling was performed from both self-excited tests and 140 scheduled train passages. The outputs have been analysed to show that the data can be used to successfully assess railway catenary structural response components.
Place, publisher, year, edition, pages
Elsevier, 2016. Vol. 6, 22-30 p.
Full-scale measurements, Operational modal analysis, Pantograph-catenary interaction, Soft railway catenary systems, Structural dynamics, Wireless monitoring
IdentifiersURN: urn:nbn:se:kth:diva-195192DOI: 10.1016/j.csse.2016.05.003ScopusID: 2-s2.0-84969685697OAI: oai:DiVA.org:kth-195192DiVA: diva2:1051637
QC 201612022016-12-022016-11-022016-12-02Bibliographically approved