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Leak detection and localization using acoustic emission technique

This article provides a method of acoustic emission (AE) technique to detect leakage in pipeline and locate the position of the leakage. The AE sensor is made of piezoelectric effect transducer to pick up the acoustic emission signal which is generated from the turbulent flow at the leak position. | Leak detection and localization using acoustic emission technique Engineering Solid Mechanics 4 2016 17-24 Contents lists available at GrowingScience Engineering Solid Mechanics homepage www.GrowingScience.com esm Leak detection and localization using acoustic emission technique Tonphong Kaewkongka Department of Physics Faculty of Science Chulalongkorn University Patumwan Bangkok 10330 Thailand ARTICLE INFO ABSTRACT Article history This article provides a method of acoustic emission AE technique to detect leakage in Received 6 April 2015 pipeline and locate the position of the leakage. The AE sensor is made of piezoelectric effect Accepted 10 October 2015 transducer to pick up the acoustic emission signal which is generated from the turbulent flow Available online at the leak position. The signal conditioning unit is used to enhanced and eliminate the 11 October 2015 Keywords background noise from the leak location sources. The main acoustic emission processing unit Acoustic emission is used to acquire and process the extracted AE characteristic parameters from preprocessing Leak waveform. The leak pipeline is simulated by drilling the hole and plugged with M8 screw at Detection different locations. The results show that the proposed AE method can detect and locate Localization simultaneous leak condition in pipeline with promising results. 2016 Growing Science Ltd. All rights reserved. 1. Introduction Pipelines are the necessary part in almost all kind of petrochemical industries. Often the pipeline rupture may be caused by the fatigue or the sudden change in pressure. This causes not only the machine failure product loss but also the environmental hazardous if the defected pipeline is not quickly detected and repaired. Monitoring the condition of the pipelines has obtained considerable attention over the past many years due to its particular importance for the safety and the environmental and economic reasons. A reliable condition monitoring system will .