Abstract
The article presents an extended summary regarding the impact of rail damage on vibration waveforms and vibroacoustic spectrum images of vibrations. The analyzed example is based on the passage of the train depot – passenger train on a selected railway line. A short summary of the analyzed research problem is also presented.
Highlights
There are two basic types of structural vibration: steady-state vibration caused by continually running machines such as engines, and transient vibration caused by a short-duration disturbance such as train passing over an expansion joint in a rail
The major source of railway rolling vibration is the structural vibration of the wheel and rail which is generated by the combination of small-scale undulations on the wheel and rail contact surfaces
The braking system used in this composition is Knor-Bremse, the driving trolley of PESA production is 27MNd and there is no intermediate trolley with 2.7 m spacing
Summary
There are two basic types of structural vibration: steady-state vibration caused by continually running machines such as engines, and transient vibration caused by a short-duration disturbance such as train passing over an expansion joint in a rail. In the case of this research phenomenon, two measuring points were analyzed and located in Silesia region. Sampling with a single-axis sensor mounted was 42000 Hz. A characteristic feature of the selected measurement points was the finding of damage on the rail as shown in the below photograph (Fig. 2), differences in the waveform and vibration spectra in comparison to a healthy rail section – in this case the second sensor was located 5.4 m from the damage. DEPENDENCE OF DAMAGE TO THE RUNNING SURFACE OF THE RAILWAY RAIL ON THE VIBROACOUSTIC SIGNAL OF A PASSING PASSENGER TRAIN.
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