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Type: Journal article
Title: Experimental verification of pipeline frequency response extraction and leak detection using the inverse repeat signal
Author: Gong, J.
Lambert, M.
Zecchin, A.
Simpson, A.
Citation: Journal of Hydraulic Research, 2016; 54(2):210-219
Publisher: Taylor & Francis
Issue Date: 2016
ISSN: 0022-1686
Statement of
Jinzhe Gong, Martin F. Lambert, Aaron C. Zecchin, Angus R. Simpson
Abstract: This paper presents the original design of a side-discharge valve based transient generator that can produce two types of pseudorandom binary signals: a maximum length binary signal and an inverse repeat signal. These two signals are both wide bandwidth, persistent and periodic, but the inverse repeat signal has the advantageous property that it is antisymmetric within each period. The two signals are used to extract the frequency response function of a single water pipeline in the laboratory. The experimental results demonstrate that the frequency response function extracted by the inverse repeat signal is closer to the theoretical linear results as obtained from the transfer matrix method due to it being able to cancel the effect of even-order nonlinearities. The customized transient generator is then applied to a pipeline with a leak. The location of the leak is successfully determined using the first three resonant peaks as extracted by the inverse repeat signal.
Keywords: Fluid transient; frequency response function; leak; pipeline; pseudorandom binary signal; water hammer
Description: Received 3 June 2014; accepted 20 October 2015/Open for discussion until 31 October 2016
Rights: © 2015 International Association for Hydro-Environment Engineering and Research
DOI: 10.1080/00221686.2015.1116115
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Appears in Collections:Aurora harvest 7
Civil and Environmental Engineering publications

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