Characterization of In-Pipe Acoustic Wave for Water Leak Detection
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Characterization of in-pipe.pdf
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Author(s)
Khalifa, Atia E.
Ben-Mansour, Rached
Youcef-Toumi, Kamal
Choi, Changrak
Date Issued
November 2011
Journal
Proceedings of the ASME 2011 International Mechanical Engineering Congress & Exposition IMECE2011
Publisher
American Society of Mechanical Engineers (ASME)
Citation
Khalifa, Atia E. et al. “Characterization of In-Pipe Acoustic Wave for Water Leak Detection.” ASME 2011 International Mechanical Engineering Congress and Exposition, 11-17 November, 2011, Denver, Colorado, USA, ASME, 2011.
Version
Final published version
Abstract
This paper presents experimental observations on the characteristics of the acoustic signal propagation and attenuation inside water-filled pipes. An acoustic source (exciter) is mounted on the internal pipe wall, at a fixed location, and produces a tonal sound to simulate a leak noise with controlled frequency and amplitude, under different flow conditions. A hydrophone is aligned with the pipe centerline and can be re-positioned to capture the acoustic signal at different locations. Results showed that the wave attenuation depends on the source frequency and the line pressure. High frequency signals get attenuated more with increasing distance from the source. The optimum location to place the hydrophone for capturing the acoustic signal is not at the vicinity of source location. The optimum location also depends on the frequency and line pressure. It was also observed that the attenuation of the acoustic waves is higher in more flexible pipes like PVC ones.
MIT Department
Massachusetts Institute of Technology. Department of Mechanical Engineering
Terms of Use
Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1115/IMECE2011-62333
