Single-Event Leak Detection in Pipeline Using First Three Resonant Responses
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VIEW THE REPLYPublication: Journal of Hydraulic Engineering
Volume 139, Issue 6
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.
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Acknowledgments
The research presented in this paper has been supported by the Australian Research Council through the Discovery Project Grant DP1095270. The first author thanks the Chinese Scholarship Council and the University of Adelaide for providing a joint postgraduate scholarship.
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Information
Published In
Journal of Hydraulic Engineering
Volume 139 • Issue 6 • June 2013
Pages: 645 - 655
Copyright
© 2013 American Society of Civil Engineers.
History
Received: Jun 7, 2012
Accepted: Dec 14, 2012
Published online: Dec 17, 2012
Published in print: Jun 1, 2013
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