You are being redirected because this document is part of your ASTM Compass® subscription.
    This document is part of your ASTM Compass® subscription.

    Volume 38, Issue 4 (July 2015)

    Application of Optical-Fiber Bragg Grating Sensors in Monitoring the Rail Track Deformations

    (Received 15 June 2014; accepted 20 April 2015)

    Published Online: 2015

    CODEN: GTJODJ

      Format Pages Price  
    PDF (1.5M) 10 $25   ADD TO CART

    Cite this document

    X Add email address send
    X
      .RIS For RefWorks, EndNote, ProCite, Reference Manager, Zoteo, and many others.   .DOCX For Microsoft Word



    Abstract

    The lateral flow of ballast during the passage of trains can reduce the stability of rail tracks. Therefore, it is important to monitor and restrain the movement of ballast accordingly in order to prevent track misalignment. This current study explored the use of optical-Fiber Bragg Grating (FBG) sensors to measure the lateral displacement of unreinforced and geogrid-reinforced ballast. The tests were conducted on fresh latite basalt at a loading frequency of 20 Hz and up to 250 000 load cycles. The test results showed that the FBG sensing system is fully capable of measuring the lateral displacement of ballast under high-frequency cyclic loading. A comparison of strains obtained from FBGs installed at different depths along the ballast depth is made and the lateral strain profiles are measured. Moreover, an empirical model to convert the FBG strains to an equivalent lateral displacement of ballast is proposed to effectively use this technology in real-time monitoring of track deformations.


    Author Information:

    Hussaini, S. K. Karimullah
    Assistant Professor, Department of Civil and Environmental Engineering, Indian Institute of Technology Patna, Bihar,

    Formerly Ph.D. Candidate, Centre for Geomechanics and Railway Engineering, Univ. of Wollongong, Wollongong,

    Indraratna, Buddhima
    Professor of Civil Engineering and Research Director, Centre for Geomechanics and Railway Engineering; Univ. of Wollongong, Wollongong,

    Vinod, Jayan S.
    Senior Lecturer in Civil Engineering, Centre for Geomechanics and Railway Engineering, Univ. of Wollongong, Wollongong,


    Stock #: GTJ20140123

    ISSN:0149-6115

    DOI: 10.1520/GTJ20140123

    Author
    Title Application of Optical-Fiber Bragg Grating Sensors in Monitoring the Rail Track Deformations
    Symposium ,
    Committee D18