Ultrasonic Guided Waves-Based Monitoring of Rail Head: Laboratory and Field Tests in Advances in Civil Engineering

Marcello Cammarata, Marcello Cammarata, Salvatore Salamone, Francesco Lanza Di Scalea, Piervincenzo Rizzo, Robert Phillips, Ivan Bartoli, Stefano Coccia

    Risultato della ricerca: Article

    23 Citazioni (Scopus)

    Abstract

    Recent train accidents have reaffirmed the need for developing a rail defect detection system moreeffective than that currently used. One of the most promising techniques in rail inspection is the use ofultrasonic guided waves and noncontact probes. A rail inspection prototype based on these conceptsand devoted to the automatic damage detection of defects in rail head is the focus of this paper. Theprototype includes an algorithm based on wavelet transform and outlier analysis. The discrete wavelettransform is utilized to denoise ultrasonic signals and to generate a set of relevant damage sensitivedata. These data are combined into a damage index vector fed to an unsupervised learning algorithmbased on outlier analysis that determines the anomalous conditions of the rail. The first part of thepaper shows the prototype in action on a railroad track mock-up built at the University of California,San Diego. The mock-up contained surface and internal defects. The results from three experimentsare presented. The importance of feature selection to maximize the sensitivity of the inspection systemis demonstrated here. The second part of the paper shows the results of field testing conducted in southeast Pennsylvania under the auspices of the U.S. Federal Railroad Administration
    Lingua originaleEnglish
    pagine (da-a)1-13
    Numero di pagine13
    RivistaAdvances in Civil Engineering
    Volumevol. 2010 Issue 1
    Stato di pubblicazionePublished - 2010

      Fingerprint

    All Science Journal Classification (ASJC) codes

    • Civil and Structural Engineering

    Cita questo

    Cammarata, M., Cammarata, M., Salamone, S., Di Scalea, F. L., Rizzo, P., Phillips, R., Bartoli, I., & Coccia, S. (2010). Ultrasonic Guided Waves-Based Monitoring of Rail Head: Laboratory and Field Tests in Advances in Civil Engineering. Advances in Civil Engineering, vol. 2010 Issue 1, 1-13.