@inproceedings{68507456fd424db0a66d9826aa407894,
title = "Characterization of in-pipe acoustic wave for water leak detection",
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.",
keywords = "Acoustic signal attenuation and propagation, In-pipe measurements, Leak detection",
author = "Khalifa, {Atia E.} and Rached Ben-Mansour and Kamal Youcef-Toumi and Changrak Choi",
year = "2011",
doi = "10.1115/imece2011-62333",
language = "English",
isbn = "9780791854945",
series = "ASME 2011 International Mechanical Engineering Congress and Exposition, IMECE 2011",
publisher = "American Society of Mechanical Engineers (ASME)",
pages = "995--1000",
booktitle = "Mechanics of Solids, Structures and Fluids; Vibration, Acoustics and Wave Propagation",
}