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Estimating the spectrum of leak noise in buried plastic water distribution pipes using acoustic or vibration measurements remote from the leak
(2021-01-15)
An appropriate model of leak noise at source is necessary in analytical and numerical approaches to investigate the characteristics of leak noise measured remotely from the leak in buried water pipes. It is extremely ...
Amplitude distortion of measured leak noise signals caused by instrumentation: Effects on leak detection in water pipes using the cross-correlation method
(2019-11-24)
A common way to detect and locate leaks in buried water pipes is to use leak noise correlators. Vibration or acoustic signals are measured on or in the pipe using sensors placed either side of the leak, and the difference ...
On the role of vibro-acoustics in leak detection for plastic water distribution pipes
(2017-01-01)
Leaks have been detected and localized in water distribution in many countries for years, by using the cross-correlation of pipe vibration measured either side of a suspected leak and/or by using listening sticks. However, ...
Experimental investigation into techniques to predict leak shapes in water distribution systems using vibration measurements
(IWA PublishingAlliance House, 2018-07)
Water loss from leaking pipes represents a substantial loss of revenue as well as environmental and public health concerns. Leak location is normally identified by placing sensors either side of the leak and recording and ...
Using a geophone as an actuator to estimate the velocity of leak noise propagation in buried water pipes
(2021-12-15)
A common way to pinpoint a leak in a buried plastic water pipe is to use a leak noise correlator. This is performed by using the time delay between two measured signals and the velocity at which such signals travel along ...
The dynamic behaviour of a buried water pipe and its effect on leak location using acoustic methods
(2013-09-16)
Leakage in buried pipes is one of the main concerns for water companies due to the scarcity of potable water sources. Older metallic pipelines have been replaced by plastic pipes in such systems, which makes it more difficult ...
The dynamic behaviour of a buried water pipe and its effect on leak location using acoustic methods
(2013-09-16)
Leakage in buried pipes is one of the main concerns for water companies due to the scarcity of potable water sources. Older metallic pipelines have been replaced by plastic pipes in such systems, which makes it more difficult ...
Assessment of the Performance of Acoustic and Mass Balance Methods for Leak Detection in Pipelines for Transporting Liquids
(ASME-AMER SOC MECHANICAL ENG, 2010)
On-line leak detection is a main concern for the safe operation of pipelines. Acoustic and mass balance are the most important and extensively applied technologies in field problems. The objective of this work is to compare ...
Early management of esophageal leak in esophageal atresia: Changing paradigms
(Mary Ann Liebert, 2020)
Introduction:A leak at the esophageal anastomosis can occur in 10%-20% of cases of esophageal atresia (EA). Thoracoscopic repair is trans-pleural, with the potential development of an empyema. Standard treatment of an ...