A cyclic top event (i.e. corrugation) in a rail is predicted from measurement data which is received at different times (e.g. monthly) and indicates variations in rail height along its length. The measurement data is analysed to obtain peaks at points along the rail for one or more wavelengths at each the measurement times and a length of rail containing at least two amplitude peaks above a first threshold is identified as a cyclic top event risk site. For each risk site, a future accumulated amplitude value is predicted based on the measurement data for consecutive peaks within the risk site above the first threshold. A start (and end) location of the risk site may be defined as the location of the first (and last) peak below a third threshold and preceding (or succeeding) peaks above the first threshold (Fig.4). The wavelengths may be predetermined from knowledge of the geometry of the rail or vehicles that use it.
Prediction of cyclic top events
2024-01-17
Patent
Elektronische Ressource
Englisch
IPC: | B61L Leiten des Eisenbahnverkehrs , GUIDING RAILWAY TRAFFIC |
Hodographic Prediction of Cyclic Creep Behavior
AIAA | 1974
|Hodographic prediction of cyclic creep behavior
AIAA | 1973
|