Guided wave technique for non-destructive testing of StifPipe®

Umar Amjad, Susheel K. Yadav, Chi H. Nguyen, Mohammad Ehsani, Tribikram Kundu

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


The newly-developed StifPipe® is an effective technology for repair and strengthening of existing pipes and culverts. The wall of this pipe consists of a lightweight honeycomb core with carbon or glaß fiber reinforced polymer (FRP) applied to the skin. The presence of the hollow honeycomb introduces challenges in the nondestructive testing (NDT) of this pipe. In this study, it is investigated if guided waves, excited by PZT (Lead ZirconateTitanate) transducer can detect damages in the honeycomb layer of the StifPipe®. Multiple signal proceßing techniques are used for in-depth study and understanding of the recorded signals. The experimental technique for damage detection in StifPipe® material is described and the obtained results are presented in this paper.

Original languageEnglish (US)
Title of host publicationHealth Monitoring of Structural and Biological Systems 2015
EditorsTribikram Kundu
ISBN (Electronic)9781628415414
StatePublished - 2015
EventHealth Monitoring of Structural and Biological Systems 2015 - San Diego, United States
Duration: Mar 9 2015Mar 12 2015

Publication series

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


OtherHealth Monitoring of Structural and Biological Systems 2015
Country/TerritoryUnited States
CitySan Diego


  • Choi-Williams Distribution Transform (CWDT)
  • Continuous Wavelet Transform (CWT)
  • Dispersion curve
  • Fast Fourier Transform (FFT)
  • Fiber Reinforced Polymer (FRP)
  • Guided ultrasonic waves
  • Lead ZirconateTitanate (PZT)
  • Non-Destructive Testing (NDT).
  • Structural Health Monitoring (SHM)

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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