Conference paper ยท Journal article
Towards an energy-based indicator of track quality in turnouts
This paper investigates track vibration energy as a potential novel indicator of turnout's track quality. Exploiting measurements of train-induced track vertical accelerations at different sections of a turnout, the track vibration energy is estimated and its variation over time analysed through the creation of statistical empirical distributions.
A clear increase in vibration energy can be observed over a period of two years. An analysis of the turnout track geometry through a standard indicator adopted by the railway industry is then performed, and an increase in longitudinal level over the same investigation period clearly indicates track degradation due to cumulative loading.
Last, a correlation analysis is performed between the estimated vibration energy and the indicator of track quality based on geometry data. Such analysis shows a significant correlation between the two indexes, thereby addressing the possibility of developing a novel condition monitoring tool for track quality based on track vibration energy.
The whole investigation is based on full-scale measurements of track vertical acceleration and track geometry performed over a period of two years in a turnout of the Danish railway infrastructure.
Language: | English |
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Year: | 2020 |
Pages: | 8482-8487 |
Proceedings: | 21<sup>st</sup> IFAC World Congress 2020 |
ISSN: | 24058963 and 24058971 |
Types: | Conference paper and Journal article |
DOI: | 10.1016/j.ifacol.2020.12.1428 |
ORCIDs: | Asadzadeh, Seyed Mohammad , Galeazzi, Roberto and Barkhordari, Pegah |