On the selection of acoustic/vibration sensors for leak detection in plastic water pipes
Gao, Y., Brennan, M.J., Joseph, P.F., Muggleton, J.M. and Hunaidi, O. (2005) On the selection of acoustic/vibration sensors for leak detection in plastic water pipes. Journal of Sound and Vibration, 283, (3-5), 927-941. (doi:10.1016/j.jsv.2004.05.004).
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Description/Abstract
Leaks from buried water distribution pipes are commonly located by applying the correlation technique to two measured acoustic/vibration signals on either side of a leak. The effectiveness of the correlation technique for locating leaks in plastic pipes depends on the type of sensors used and their sensitivities. Based on an analytical model of the cross-correlation of pressure responses established in an earlier study, this paper investigates the behaviour of the cross-correlation coefficient for leak signals measured using pressure, velocity and acceleration sensors. Theoretical predictions show that a measure of pressure responses using hydrophones is effective for measurements where there is a small signal-to-noise ratio (SNR), but a sharper peak correlation coefficient can be achieved if accelerometers are used. The theoretical work is validated to some extent with test data from actual water pipes on a test site in Canada.
| Item Type: | Article |
|---|---|
| ISSNs: | 0022-460X (print) |
| Related URLs: | |
| Subjects: | T Technology > TA Engineering (General). Civil engineering (General) |
| Divisions: | University Structure - Pre August 2011 > Institute of Sound and Vibration Research > Dynamics |
| Item ID: | 28431 |
| Date Deposited: | 28 Apr 2006 |
| Last Modified: | 01 Apr 2012 03:06 |
| Contributors: | Gao, Y. (Author) Brennan, M.J. (Author) Joseph, P.F. (Author) Muggleton, J.M. (Author) Hunaidi, O. (Author) |
| Date: | 2005 |
| Status: | Published |
| URI: | http://eprints.soton.ac.uk/id/eprint/28431 |
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