Acoustic leak localisation based on multipath identification
Acoustic leak localisation based on multipath identification
This paper proposes a method for estimating wave speed and locating leaks in water pipes using multipath identification techniques. The wave speed and leak location are determined simultaneously from the relative arrival times of reflections in acoustic leak signals. Two multipath identification techniques based on the autocorrelation function and power cepstrum are derived and analysed for identifying reflections. Results show that the power cepstral technique is more robust and accurate than the autocorrelation technique. Analysis of simulation and experimental data acquired on a leakage test rig demonstrates that the proposed method is effective for locating leaks, outperforming the commonly used cross-correlation method in some cases. A practical advantage of the proposed method is capability to locate leaks without a priori knowledge of the wave speed.
Acoustic, Autocorrelation, Cepstrum, Localisation, Multipath identification, Leakage
Uchendu, Ndubuisi
4d00be49-162b-4d25-b4cf-b253f06b567c
Muggleton, Jennifer M.
2298700d-8ec7-4241-828a-1a1c5c36ecb5
White, Paul R.
2dd2477b-5aa9-42e2-9d19-0806d994eaba
23 January 2025
Uchendu, Ndubuisi
4d00be49-162b-4d25-b4cf-b253f06b567c
Muggleton, Jennifer M.
2298700d-8ec7-4241-828a-1a1c5c36ecb5
White, Paul R.
2dd2477b-5aa9-42e2-9d19-0806d994eaba
Uchendu, Ndubuisi, Muggleton, Jennifer M. and White, Paul R.
(2025)
Acoustic leak localisation based on multipath identification.
Journal of Sound and Vibration, 602, [118970].
(doi:10.1016/j.jsv.2025.118970).
Abstract
This paper proposes a method for estimating wave speed and locating leaks in water pipes using multipath identification techniques. The wave speed and leak location are determined simultaneously from the relative arrival times of reflections in acoustic leak signals. Two multipath identification techniques based on the autocorrelation function and power cepstrum are derived and analysed for identifying reflections. Results show that the power cepstral technique is more robust and accurate than the autocorrelation technique. Analysis of simulation and experimental data acquired on a leakage test rig demonstrates that the proposed method is effective for locating leaks, outperforming the commonly used cross-correlation method in some cases. A practical advantage of the proposed method is capability to locate leaks without a priori knowledge of the wave speed.
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Acoustic leak localisation based on multipath identification ACCEPTED
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Accepted/In Press date: 15 January 2025
e-pub ahead of print date: 20 January 2025
Published date: 23 January 2025
Keywords:
Acoustic, Autocorrelation, Cepstrum, Localisation, Multipath identification, Leakage
Identifiers
Local EPrints ID: 499433
URI: http://eprints.soton.ac.uk/id/eprint/499433
ISSN: 1095-8568
PURE UUID: 0739b507-85a6-4769-8108-d3d106487c02
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Date deposited: 20 Mar 2025 17:30
Last modified: 22 Aug 2025 01:35
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Author:
Ndubuisi Uchendu
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