Modal analysis of acoustic leak signal in pipelines using time-frequency analysis

2006, Volume 1, Issue 2

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Frontiers of Mechanical Engineering >> 2006, Volume 1, Issue 2 doi: 10.1007/s11465-006-0013-3

Modal analysis of acoustic leak signal in pipelines using time-frequency analysis

College of Mechanical Engineering and Applied Electronic Technology, Beijing University of Technology, Beijing 100022, China

Available online: 2006-06-05

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Abstract

It is important to analyze the propagation characteristics of guided waves in acoustic leak location in pipelines. In this paper, the acoustic leak signal is analyzed in the time-frequency domain. Based on the relation of time-frequency distribution of the acoustic leak signal and the dispersion curves of guided waves, the mode components of acoustic leak signals were obtained. The research can provide a guideline for the mode selection in pipeline leak location, and help improve the accuracy of leak location.

Keywords

dispersion ; selection ; guided ; research ; time-frequency

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