Local resonances for rail neutral temperature estimation

Yuning Wu, Keping Zhang, Xuan Zhu, John Popovics

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

In-situ thermal stress determination in structures is a challenging experimental mechanics task, especially if it requires a nondestructive approach. Thermal stress measurement and management of continuous welded rail (CWR) have become more important for railroad maintenance. Local resonances formed by zero-group velocity (ZGV) and cutoff frequency points usually demonstrate sharp resonance peaks in frequency spectra, which can be utilized for nondestructive evaluation (NDE) and Structural Health Monitoring (SHM). This paper examines the potential of the local resonances to provide an estimation of axial stress in rail structures. The local resonances are generated by bonding a piezoelectric element on the rail samples. A 610-mm rail sample was tested, and different axial stress levels were applied by an MTS tensile-compression machine and by measuring the local resonance signature in selected frequency bands to study sensitivity to axial stress of local resonances. The results show that appreciable sensitivities of the local resonances are found under varying stress levels and can be further utilized for in-situ thermal stress determination for rails.

Original languageEnglish (US)
Title of host publicationNondestructive Characterization and Monitoring of Advanced Materials, Aerospace, Civil Infrastructure, and Transportation XVII
EditorsPeter J. Shull, Andrew L. Gyekenyesi, H. Felix Wu, Tzuyang Yu
PublisherSPIE
ISBN (Electronic)9781510660816
DOIs
StatePublished - 2023
EventNondestructive Characterization and Monitoring of Advanced Materials, Aerospace, Civil Infrastructure, and Transportation XVII 2023 - Long Beach, United States
Duration: Mar 13 2023Mar 16 2023

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume12487
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Conference

ConferenceNondestructive Characterization and Monitoring of Advanced Materials, Aerospace, Civil Infrastructure, and Transportation XVII 2023
Country/TerritoryUnited States
CityLong Beach
Period3/13/233/16/23

Keywords

  • Local resonances
  • axial stress sensitivity
  • piezoelectric lead-zirconate–titanate (PZT)
  • rail structure

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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