Leak location using the pattern of the frequency response diagram in pipelines: a numerical study

This paper presents a method of leak detection in a single pipe where the behaviour of the system frequency response diagram (FRD) is used as an indicator of the pipe integrity. The presence of a leak in a pipe imposes a pattern on the resonance peaks of the FRD that can be used as a clear indicatio...

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Bibliographic Details
Published in:Journal of sound and vibration 2005-06, Vol.284 (3), p.1051-1073
Main Authors: Lee, Pedro J., Vítkovský, John P., Lambert, Martin F., Simpson, Angus R., Liggett, James A.
Format: Article
Language:English
Subjects:
Exact sciences and technology
Fundamental areas of phenomenology (including applications)
Measurement and testing methods
Physics
Solid mechanics
Structural and continuum mechanics
Vibration, mechanical wave, dynamic stability (aeroelasticity, vibration control...)
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Summary:This paper presents a method of leak detection in a single pipe where the behaviour of the system frequency response diagram (FRD) is used as an indicator of the pipe integrity. The presence of a leak in a pipe imposes a pattern on the resonance peaks of the FRD that can be used as a clear indication of leakage. Analytical expressions describing the pattern of the resonance peaks are derived. Illustrations of how this pattern can be used to individually locate and size multiple leaks within the system are presented. Practical issues with the technique, such as the procedure for frequency response extraction, the impact of measurement position, noise- and frequency-dependent friction are also discussed.
ISSN:0022-460X
1095-8568
DOI:10.1016/j.jsv.2004.07.023