scholarly journals Frequency Response Diagram for Pipeline Leak Detection: Comparing the Odd and Even Harmonics

2014 ◽  
Vol 140 (1) ◽  
pp. 65-74 ◽  
Author(s):  
Jinzhe Gong ◽  
Aaron C. Zecchin ◽  
Angus R. Simpson ◽  
Martin F. Lambert
Keyword(s):  
Frequency Response ◽  
Leak Detection ◽  
Even Harmonics

Leak detection in pipes by frequency response method using a step excitation

2002 ◽  
Vol 40 (1) ◽  
pp. 55-62 ◽  
Author(s):  
Witness Mpesha ◽  
M. Hanif Chaudhry ◽  
Sarah L. Gassman
Keyword(s):  
Frequency Response ◽  
Leak Detection ◽  
Frequency Response Method ◽  
Response Method

scholarly journals Experimental verification of pipeline frequency response extraction and leak detection using the inverse repeat signal

2015 ◽  
Vol 54 (2) ◽  
pp. 210-219 ◽  
Author(s):  
Jinzhe Gong ◽  
Martin F. Lambert ◽  
Aaron C. Zecchin ◽  
Angus R. Simpson
Keyword(s):  
Frequency Response ◽  
Experimental Verification ◽  
Leak Detection

scholarly journals Transient frequency response based leak detection in water supply pipeline systems with branched and looped junctions

2016 ◽  
Vol 19 (1) ◽  
pp. 17-30 ◽  
Author(s):  
Huan-Feng Duan
Keyword(s):  
Water Supply ◽  
Frequency Response ◽  
Numerical Experiments ◽  
Detection Method ◽  
Leak Detection ◽  
Transient Responses ◽  
Practical Applications ◽  
Supply Pipe ◽  
Pipeline Systems ◽  
Water Supply Pipeline

The transient frequency response (TFR) method has been widely developed and applied in the literature to identify and detect potential defects such as leakage and blockage in water supply pipe systems. This type of method was found to be efficient, economic and non-intrusive for pipeline condition assessment and diagnosis, but its applications so far are mainly limited to single and simple pipeline systems. This paper aims to extend the TFR-based leak detection method to relatively more complex pipeline connection situations. The branched and looped pipe junctions are firstly investigated for their influences to the system TFR, so that their effects can be characterized and separated from the effect of other components and potential leakage defects in the system. The leak-induced patterns of transient responses are derived analytically using the transfer matrix method for systems with different pipe junctions, which thereafter are used for the analysis of pipe leakage conditions in the system. The developed method is validated through different numerical experiments in this study. Based on the analytical analysis and numerical results, the applicability and accuracy as well as the limitations of the developed TFR-based leak detection method are discussed for practical applications in the paper.

Leak detection in pipes by frequency response method using a step excitation

2003 ◽  
Vol 41 (2) ◽  
pp. 221-223 ◽  
Author(s):  
Pedro J. Lee ◽  
John P. Vítkovský ◽  
Angus R. Simpson ◽  
Martin E Lambert ◽  
James A. Liggett
Keyword(s):  
Frequency Response ◽  
Leak Detection ◽  
Frequency Response Method ◽  
Response Method

Leak detection in complex series pipelines by using the system frequency response method

2011 ◽  
Vol 49 (2) ◽  
pp. 213-221 ◽  
Author(s):  
Huan-Feng Duan ◽  
Pedro J. Lee ◽  
Mohamed S. Ghidaoui ◽  
Yeou-Koung Tung
Keyword(s):  
Frequency Response ◽  
Leak Detection ◽  
Complex Series ◽  
Frequency Response Method ◽  
Response Method ◽  
System Frequency

Leak Detection in Pipes by Frequency Response Method

2001 ◽  
Vol 127 (2) ◽  
pp. 134-147 ◽  
Author(s):  
Witness Mpesha ◽  
Sarah L. Gassman ◽  
M. Hanif Chaudhry
Keyword(s):  
Frequency Response ◽  
Leak Detection ◽  
Frequency Response Method ◽  
Response Method

scholarly journals Experimental verification of the frequency response method for pipeline leak detection

2006 ◽  
Vol 44 (5) ◽  
pp. 693-707 ◽  
Author(s):  
Pedro J. Lee ◽  
Martin F. Lambert ◽  
Angus R. Simpson ◽  
John P. Vítkovský ◽  
James Liggett
Keyword(s):  
Frequency Response ◽  
Experimental Verification ◽  
Leak Detection ◽  
Frequency Response Method ◽  
Response Method
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