Transient wave-leak interaction analysis for improved leak detection in viscoelastic pipelines

Ying Zhang, Huan Feng Duan, Alireza Keramat, Bin Pan, Silvia Meniconi, Bruno Brunone, Pedro J. Lee

Research output: Journal article publicationJournal articleAcademic researchpeer-review

1 Citation (Scopus)


Transient wave reflection methods (TWRMs) have exhibited favorable capability in leak detection for elastic pipelines, but applications have demonstrated their relatively low accuracy for viscoelastic pipelines. This paper investigates the transient wave behaviour, the principal tenet for leak detection by TWRMs, in a leaky viscoelastic pipeline to understand the mechanism of wave modification by leaks and viscoelasticity. Based on the correspondence principle, this research derives analytical formulations of the leak-induced wave reflection and phase difference at any measurement point in a viscoelastic pipe. According to the measured reflection coefficient, an optimization algorithm is further developed to detect the leak. The methodologies are then assessed and discussed through sinusoidal and sigmoid perturbations in numerical and laboratory tests. The extensive analyses indicate that measurement distance and leak ratio affect the magnitude of the reflected wave, yet, the wave phase shift is relatively independent of the leak ratio for practical applications.

Original languageEnglish
Article number112442
JournalMeasurement: Journal of the International Measurement Confederation
Publication statusPublished - 28 Feb 2023


  • Leak detection
  • Pipe health monitoring
  • Signal processing
  • Transient wave reflection-based method (TWRM)
  • Viscoelastic pipeline

ASJC Scopus subject areas

  • Instrumentation
  • Electrical and Electronic Engineering


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