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Type: Journal article
Title: Single-event leak detection in pipeline using first three resonant responses
Author: Gong, J.
Lambert, M.
Simpson, A.
Zecchin, A.
Citation: Journal of Hydraulic Engineering, 2013; 139(6):645-655
Publisher: ASCE-Amer Soc Civil Engineers
Issue Date: 2013
ISSN: 0733-9429
Statement of
Jinzhe Gong, Martin F. Lambert, Angus R. Simpson, and Aaron C. Zecchin
Abstract: Hydraulic transients (water hammer waves) can be used to excite a pressurized pipeline, yielding the frequency response diagram (FRD) of the system. The FRD of a pipeline system is useful for condition assessment and fault detection, because it is closely related to the physical properties of the pipeline. Most previous FRD-based leak detection techniques use the sinusoidal leak-induced pattern recorded on the FRD, either shown on the resonant responses or the antiresonant responses. In contrast, the technique reported in the current paper only uses the responses at the first three resonant frequencies to determine the location and size of a leak. The bandwidth of the excitation only needs to be five times that of the fundamental frequency of the tested pipeline, which is much less than the requirement in conventional FRD-based techniques. Sensitivity analysis and numerical simulations are performed to assess the robustness and applicable range of the proposed leak location technique. The proposed leak location technique is verified by both numerical simulations and by using an experimental FRD obtained from a laboratory pipeline. © 2013 American Society of Civil Engineers.
Keywords: Pipelines
Fluid transients
Water hammer
Water distribution systems
Leak detection
Frequency response diagram
Harmonic analysis.
Rights: © 2013 American Society of Civil Engineers
DOI: 10.1061/(ASCE)HY.1943-7900.0000720
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Appears in Collections:Aurora harvest 7
Civil and Environmental Engineering publications
Environment Institute publications

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