Change in time-of-flight of longitudinal (axisymmetric) wave modes due to lamination in steel pipes

U. Amjad, Chi Hanh Nguyen, S. K. Yadav, E. Mahmoudabadi, Tribikram Kundu

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

5 Scopus citations

Abstract

Investigations with the aid of longitudinal guided waves in cylindrical structures have been regularly carried out for non-destructive evaluation (NDE) and structural health monitoring (SHM). While earlier works concentrated on the amplitude reduction of the propagating waves due to structural anomalies in this work the change in time-of-flight is investigated. Longitudinal (axisymmetric) modes are excited by a PZT (Lead Zirconate Titanate) transducer for detection of any fluctuation or change in the surface of a steel pipe. Propagating waves are analyzed after proper signal processing. To observe the small change in TOF due to lamination on the surface of a steel pipe, cross-correlation technique is used to attain a higher temporal resolution. The experimental technique is discussed and the obtained results are presented in this paper.

Original languageEnglish (US)
Title of host publicationProceedings of SPIE - The International Society for Optical Engineering
Volume8695
DOIs
Publication statusPublished - 2013
EventSPIE Conference on Health Monitoring of Structural and Biological Systems 2013 - San Diego, CA, United States
Duration: Mar 11 2013Mar 14 2013

Other

OtherSPIE Conference on Health Monitoring of Structural and Biological Systems 2013
CountryUnited States
CitySan Diego, CA
Period3/11/133/14/13

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Keywords

  • Dispersion curve
  • Fast fourier transform (FFT)
  • Guided ultrasonic waves
  • Lead zirconate titanate (PZT)
  • S-Transform (ST)
  • Short time fourier transform (STFT)
  • Structural health monitoring (SHM)
  • Time-of-flight (TOF)

ASJC Scopus subject areas

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

Cite this

Amjad, U., Nguyen, C. H., Yadav, S. K., Mahmoudabadi, E., & Kundu, T. (2013). Change in time-of-flight of longitudinal (axisymmetric) wave modes due to lamination in steel pipes. In Proceedings of SPIE - The International Society for Optical Engineering (Vol. 8695). [869515] https://doi.org/10.1117/12.2009897