A study of hydraulic seal integrity

Chen, P.; Chua, Patrick S. K.; Lim, G.H.

doi:10.1016/j.ymssp.2005.09.002

Cited by 27 publications

(29 citation statements)

References 13 publications

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“…Chen et al evaluated the various parameters of AE signals in terms of their capability of estimating the internal leakage rate of a water hydraulic cylinder. They have shown the RMS value was more suitable to interpret AE signals generated by internal leakage [36]. Kaewwaewnoi et al also found the relationship between the AErms and the parameters such as inlet pressure levels, valve sizes, and valve types.…”

Section: The Processing Methods Of Ae Signalmentioning

confidence: 99%

Nondestructive Detection of Valves Using Acoustic Emission Technique

Jin

Heng-hu

Hong

et al. 2015

Advances in Materials Science and Engineering

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The applications of acoustic emission (AE) technique in detection of valves are presented in this review, and the theoretical models and experimental results of nondestructive detection of valves using AE are provided. The generation of AE signals and the basic composition of AE detection system are briefly explained. The applications of AE technique in valves are focused on condition monitoring, failure, cavitation detection, and the development of portable measuring devices. All results prove that the AE technique works well in the detection of valves.

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Section: The Processing Methods Of Ae Signalmentioning

confidence: 99%

Nondestructive Detection of Valves Using Acoustic Emission Technique

Jin

Heng-hu

Hong

et al. 2015

Advances in Materials Science and Engineering

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“…Several researches [14,15] found that AE energy and various leakage parameters had a good correlation.…”

Section: Mathematical Modelmentioning

confidence: 99%

Smart portable noninvasive instrument for detection of internal air leakage of a valve using acoustic emission signals

2011

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“…Studying just one hole size, the RMS of leak signals has also been shown to effectively describe leak flow rate in plastic water pipe by Butterfield et al 2 and in gas pipes by Chen et al 7 EMD-based decomposition was used by Sun et al 5 in combination with the signal RMS to classify the aperture of leaks in gas pipes, finding that the RMS of individual IMFs, produced from EMD provided good separation between circular holes in gas pipes of different diameters. RMS features can be used to characterise continuous vibration signals, with the RMS value representing the energy of the signal at that point in time 5 and could therefore be a good feature in predicting leak flow rates.…”

Section: Feature Extraction Of Leak Signalsmentioning

confidence: 99%

Prediction of leak flow rate in plastic water distribution pipes using vibro-acoustic measurements

Butterfield

Meruane

Collins

et al. 2017

Structural Health Monitoring

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Leakage from water distribution systems is a worldwide issue with consequences including loss of revenue, health and environmental concerns. Leaks have typically been found through leak noise correlation by placing sensors either side of the leak and recording and analysing its vibro-acoustic emission. While this method is widely used to identify the location of the leak, the sensors also record data that could be related to the leak's flow rate, yet no reliable method exists to predict leak flow rate in water distribution pipes using vibro-acoustic emission. The aim of this research is to predict leak flow rate in medium-density polyethylene pipe using vibro-acoustic emission signals. A novel experimental methodology is presented whereby circular holes of four sizes are tested at several leak flow rates. Following the derivation of a number of features, least squares support vector machines are used in order to predict leak flow rate. The results show a strong correlation highlighting the potential of this technique as a rapid and practical tool for water companies to assess and prioritise leak repair.

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A study of hydraulic seal integrity

Cited by 27 publications

References 13 publications

Nondestructive Detection of Valves Using Acoustic Emission Technique

Nondestructive Detection of Valves Using Acoustic Emission Technique

Smart portable noninvasive instrument for detection of internal air leakage of a valve using acoustic emission signals

Prediction of leak flow rate in plastic water distribution pipes using vibro-acoustic measurements

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