Essential system response information for transient-based leak detection methods

Huan Feng Duan*, Pedro J. Lee, Mohamed S. Ghidaoui, Yeou-Koung Tung

*Corresponding author for this work

Research output: Contribution to journalArticle

39 Scopus citations


Many transient-based techniques have been developed for leak detection in piping fluid systems, and they are thought to use leak-induced damping and reflection effects to detect and locate the problem. This work investigates the relative importance of the damping and reflective effects from the leak to the leak detection methods with the importance of both effects tested using four representative methods, which vary significantly in their modes of operation and provide the coverage of the major developments in the transient leak detection field. It was found that all transient-based methods are unable to detect and locate the leak in the absence of the leak-reflected signal, whereas the leak is detected and located even in the absence of leak-induced damping. The results indicate that the information previously thought to be contained in the damping of slow transients was found to be low frequency reflections from the leak.

Original languageEnglish
Pages (from-to)650-657
Number of pages8
JournalJournal of Hydraulic Research
Issue number5
StatePublished - 1 Oct 2010


  • Inverse transient analysis
  • leak detection
  • pipe system
  • system response function
  • transient damping
  • transient reflection

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