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Measurement of Wave Attenuation in Buried Plastic Water Distribution Pipes
(Assoc Mechanical Engineers Technicians Slovenia, 2014-05-01)
Leaks in pipes are a common issue encountered in the water industry. Acoustic methods are generally successful in finding and locating leaks in metallic pipes, however, they are less effective when applied to plastic pipes. ...
A stochastic model for the speed of leak noise propagation in plastic water pipes
(2021-06-09)
A good estimate of the speed of leak noise propagation is necessary to pinpoint the location of a leak using acoustic correlators. Models currently exist for this purpose, but they do not consider uncertainties in the pipe ...
On the Acoustic Filtering of the Pipe and Sensor in a Buried Plastic Water Pipe and its Effect on Leak Detection: An Experimental Investigation
(Mdpi Ag, 2014-03-01)
Acoustic techniques have been used for many years to find and locate leaks in buried water distribution systems. Hydrophones and accelerometers are typically used as sensors. Although geophones could be used as well, they ...
On the effects of soil properties on leak noise propagation in plastic water distribution pipes
(2018-08-04)
In many countries, leaks are located in water distribution pipes by using the cross-correlation of pipe vibration measured either side of a suspected leak. However, in modern plastic pipes this can be problematic due to ...
Design of macro-synthetic fibre reinforced concrete pipes
(Elsevier, 2013-06)
This paper presents an experimental campaign in which concrete pipes were manufactured using plastic fibres as the sole reinforcement material. In this regard, it has been demonstrated that the use of plastic fibres is ...
Estimation of the bulk and shear moduli of soil surrounding a plastic water pipe using measurements of the predominantly fluid wave in the pipe
(2019-05-01)
Leak noise correlators are commonly used to detect and locate leaks in buried water pipes. They use the cross-correlation function between leak noise signals measured using hydrophones or accelerometers placed on the pipe ...
The effects of resonances on time delay estimation for water leak detection in plastic pipes
(2018-04-28)
In the use of acoustic correlation methods for water leak detection, sensors are placed at pipe access points either side of a suspected leak, and the peak in the cross-correlation function of the measured signals gives ...
Experimental Investigation into the Characteristics of In-Pipe Leak Noise in Plastic Water Filled Pipes
(S Hirzel Verlag, 2012-11-01)
This paper presents an experimental investigation of the characteristics of leak noise in plastic water-filled pipes. An experimental set-up was designed to identify the physical mechanisms of leak noise generation. Possible ...
Leak detection by inverse transient analysis in an experimental PVC pipe system
(IWA PUBLISHING, 2011)
Leakage reduction in water supply systems and distribution networks has been an increasingly important issue in the water industry since leaks and ruptures result in major physical and economic losses. Hydraulic transient ...
Improving the shape of the cross-correlation function for leak detection in a plastic water distribution pipe using acoustic signals
(2017-12-01)
This paper is concerned with time delay estimation for the detection of leaks in buried plastic water pipes using the cross-correlation of leak noise signals. In some circumstances the bandwidth of over which the signal ...