This paper presents experimental study on dispersive waves propagation in steel rails. The propagation of longitudinal and transverse waves was generated by an impulse hammer and measured in three points. Wavelet transform (WT) and short time Fourier transform (STFT) were applied to analyze the time signals. Analysis of signal by STFT does not provide a proper time-frequency representation due to a fixed size window but the wavelet transform based on complex wavelet is similar to STFT, because the shape of the complex wavelet resembles the Gaussian window. The different wavelet widths for different frequencies produce a time-frequency plane of high resolution. The wavelet transform can effectively identify the time-frequency components in waves and allows the estimation of group velocity. The wavelet signal processing of the experimental wave propagation signals is intended to be used for rail flaw detection. The time-frequency plane will be applied to dispersive wave propagation in rails with defects for damage localization and its size estimation.


    Access

    Access via TIB

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Guided waves in steel rails - experimental works and wavelet signal processing


    Additional title:

    Geführte Schallwelle in Eisenbahnschienen - Experimente und Wavelet-Signalverarbeitung


    Contributors:


    Publication date :

    2007


    Size :

    6 Seiten, 8 Bilder, 7 Quellen




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




    Stress Dependence of Ultrasonic Guided Waves in Rails

    Bartoli, Ivan / Phillips, Robert / Coccia, Stefano et al. | Transportation Research Record | 2010


    Stress Dependence of Ultrasonic Guided Waves in Rails

    Bartoli, Ivan | Online Contents | 2010


    Nonlinear guided waves in continuously welded rails for buckling prediction

    Phillips, Robert / Bartoli, Ivan / Coccia, Stefano et al. | Tema Archive | 2011


    Dispersive Modal Characteristics of Guided Waves Propagating in Damaged Rails

    Chen, Hua-Peng / Zhou, Hang / Ye, Ling | ASCE | 2023


    Steel rails

    Engineering Index Backfile | 1895