Acoustic Emission Technique for Pipeline Leak Detection

Lee, Min Rae; Lee, Joon Hyun

doi:10.4028/www.scientific.net/kem.183-187.887

Cited by 14 publications

(4 citation statements)

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“…The localisation of leak events through acoustic methods can be classified into time-of-flight-based or attenuation-based. Attenuation based relies on the decrease of signal amplitude as the acoustic signals travel across the pipeline while time based monitors the increase of signal transit time [39]. Acoustic emissions result from turbulent pressure fluctuations at the leak, vapor bubbles forming at high velocities and imploding as shock waves on pipe walls.…”

Section: Acoustic Techniquementioning

confidence: 99%

Review of leakage detection in water distribution networks

Negm

Aggidis

2023

IOP Conf. Ser.: Earth Environ. Sci.

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The conservation of water is, justifiably, a huge concern to water companies, regulatory bodies, environmentalist and more but, unfortunately, water loss through leakage can remain undetected for long periods of time without effective leakage detection. Leakage detection in water distribution networks has taken many forms through investigating varying properties of leakage. Understanding the characteristic leakage types and properties introduces the different emerging technologies. Even though some methodologies have gained popularity in the past decade, the need to establish a complete, economical leakage detection solution that effectively identifies background leakage as well as burst events persists. The benefits and limitations of the aforementioned technologies has often confused water utilities on adapting the most suitable method. Therefore, there is an arising need to classify and benchmark leakage detection practices. This paper reviews technologies in leakage detection contrasting hardware & software, intrusive & non-intrusive, steady state & transient, single & hybrid methods. A particular focus will be placed on scoping the projected direction of leakage detection and localisation. As anticipated, the various techniques refined over the last two decades introduce different capabilities, conditions, and constraints[1]. Assessing and comparing those methods will provide a deeper novel understanding of the research area thus paving the way for novel solutions.

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Section: Acoustic Techniquementioning

confidence: 99%

Review of leakage detection in water distribution networks

Negm

Aggidis

2023

IOP Conf. Ser.: Earth Environ. Sci.

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“…However, in traditional ultrasonic leakage signal strengthdependent localization methods, the detection of leak location is based on the ultrasonic sound intensity of a single ultrasonic transducer [3], and its localization accuracy depends on the directionality of the sensors and on human judgment of leak location [4][5][6]. Therefore, traditional methods can only roughly determine the scope of a leak and have difficulty determining an accurate position without a large number of ultrasonic transducers.…”

Section: Introductionmentioning

confidence: 99%

Gas leak localization and detection method based on a multi-point ultrasonic sensor array with TDOA algorithm

Wang¹,

Wang²,

Yu³

et al. 2015

Meas. Sci. Technol.

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To resolve the measured target position to determine and locate leak problems with current gas leak detection and localization systems based on ultrasonic technology, this paper presents an improved multi-array ultrasonic gas leak TDOA (time difference of arrival) localization and detection method. This method involves arranging ultrasonic transducers at equal intervals in a high-sensitivity detector array, using small differences in ultrasonic sound intensity to determine the scope of the leak and generate a rough localization, and then using an array TDOA localization algorithm to determine the precise leak location. This method is then implemented in an ultrasonic leak detection and localization system. Experimental results showed that the TDOA localization method, using auxiliary sound intensity factors to avoid dependence on a single sound intensity to determine the leak size and location, achieved a localization error of less than 2 mm. The validity and correctness of this approach were thus verified.

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“…It is, therefore, necessary to develop an effective and reliable damage-detection monitoring method. To date, various engineering approaches, including satellite monitoring [1], cathodic protection (CP) method [2], one-call detection [3], impressed alternating cycle current (IACC) method [4], and acoustic wave signal detection [5], have been used to efficiently localize the damage sources. Satellite monitoring and one-call detection are susceptible to urban congestion limits, whereas CP and IACC methods depend on strong electric power and detection range may be short.…”

Section: Introductionmentioning

confidence: 99%

Protection of Underground Gas Pipelines from Third Party Damage by On-Line Monitoring Using Piezoelectric Accelerometers

Cao

Baik

Choi

et al. 2007

Proceedings of the Institution of Mechanical Engineers, Part E:

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While it is difficult to detect target signals, online monitoring remains the most reliable method for the protection of underground pipelines from third party damage. In this paper, an acoustic wave propagation model based on data communication by local area network is generated along the gas pipelines to detect any damage and its location along the pipelines. In modelling the wave propagation, auto power spectral density and cross power spectral density processing methods are applied to distinguish damage signals from noises and the number of sensors in accordance with the attenuation coefficient.

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Acoustic Emission Technique for Pipeline Leak Detection

Cited by 14 publications

References 0 publications

Review of leakage detection in water distribution networks

Review of leakage detection in water distribution networks

Gas leak localization and detection method based on a multi-point ultrasonic sensor array with TDOA algorithm

Protection of Underground Gas Pipelines from Third Party Damage by On-Line Monitoring Using Piezoelectric Accelerometers

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