Uso de la STFT en el análisis de vibraciones para detectar y caracterizar la presencia de un defecto en la superficie de las ruedas de un tren.

The paper shows the experimental procedure used to record the vibrations generated by the passage of a train in a fixed point of the rail. Moreover, it also shows how to identify and characterize a defect on the surface of a wheel, by analyzing the joined time-frequency domain of these vibrations, using the short time Fourier transform -STFT. The results demonstrate the advantages of the STFT in this application, and that the use of a monitorizazing system of the vibration generated on the railway line is efficient and practical to implement a predictive maintenance of the train wheels. [ABSTRACT FROM AUTHOR]