Acoustic Emission Source Location for Steel Pipe and Pipeline Applications: The Role of Arrival Time Estimation

Shehadeh, Mohamed; Steel, John Alexander; Reuben, Robert Lewis

doi:10.1243/095440806x78829

Cited by 41 publications

(28 citation statements)

References 19 publications

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“…Shehadeh and coauthors [23] proposed a linear array of sensors to locate and reconstitute the time-domain and frequency-domain signatures of AE sources in pipes. Simulated sources on sections of line pipe were used and a range of techniques, including a wavelet-transform technique, a cross-correlation technique, and a filtering and thresholding technique were proposed.…”

Section: Acoustic Emissionmentioning

confidence: 99%

Water and Wastewater Pipe Nondestructive Evaluation and Health Monitoring: A Review

Rizzo

2010

Advances in Civil Engineering

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pipe networks assure the transportation of primary commodities such as water, oil, and natural gas. The quantitative and early detection of defects in pipes is critical in order to avoid severe consequences. As a result of high-profile accidents and economic downturn, research and development in the area of pipeline inspection has focused mainly on gas and oil pipelines. Due to the low cost of water, the development of nondestructive inspection (NDI) and structural health monitoring (SHM) technologies for fresh water mains and sewers has received the least attention. Moreover, the technical challenges associated with the practical deployment of monitoring system demand synergistic interaction across several disciplines, which may limit the transition from laboratory to real structures. This paper presents an overview of the most used NDI/SHM technologies for freshwater pipes and sewers. The challenges that said infrastructures pose with respect to oil and natural gas pipeline networks will be discussed. Finally, the methodologies that can be translated into SHM approaches are highlighted.

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Section: Acoustic Emissionmentioning

confidence: 99%

Water and Wastewater Pipe Nondestructive Evaluation and Health Monitoring: A Review

Rizzo

2010

Advances in Civil Engineering

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“…Shehadeh et al 22 presented a brief review of arrival time estimation techniques that included 'first threshold crossing', cross-correlation and wavelet analysis for AE source location in pipes and pipelines. They also presented a sliding window energy technique in which the ratio of high-frequency energy (>340 kHz, noise) and low frequency energy (<340 kHz, signal) is calculated for a short time window (20 ms) which is shifted along the signal.…”

Section: Statisticalmentioning

confidence: 99%

Towards improved damage location using acoustic emission

Eaton

Pullin

Holford

2012

Proceedings of the Institution of Mechanical Engineers, Part C:

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The acoustic emission technique is a passive non-destructive testing technique that has significant potential for use as a structural health monitoring technique for many large-scale structures, allowing continuous global monitoring. The location capability of the acoustic emission technique is its most beneficial attribute; however, the location accuracy can often be limited in complex materials and structures. This article discusses recent advances in the location of acoustic emission signals. The key sources of errors are identified as signal arrival time measurement and processing algorithm limitations. A series of strategies for reducing the effects of both causes of error are presented. Additionally, the results of a case study are used to demonstrate a novel mapping technique for acoustic emission source location of fatigue crack signals in an aircraft landing gear component. Improvements in location accuracy of up to 87.5% were observed when compared with standard location calculation algorithms.

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“…Shehadeh et al [17] have used a linear array to locate and reconstitute the time-domain and frequencydomain signatures of AE sources in pipes. They demonstrate methods for automatically separating and determining the wave velocity of components in experimental signals and investigate a range of techniques, including a wavelet transform technique, a cross-correlation technique, and a filtering and thresholding technique, to obtain arrival times for various modes and proposed an automatic source location technique with an accuracy of 5 per cent.…”

Section: Recent Advancesmentioning

confidence: 99%

Acoustic emission for monitoring aircraft structures

Holford

Pullin

Evans

et al. 2009

Proceedings of the Institution of Mechanical Engineers, Part G:

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Structural health monitoring (SHM) is of paramount importance in the aircraft industry: not only to ensure the safety and reliability of aircraft in flight and to ensure timely maintenance of critical components, but also increasingly to monitor structures under test for airworthiness certification of new designs. This article highlights some of the recent advances in the acoustic emission (AE) technique as applied to SHM, and the new approaches that are crucial for the successful use of AE data for diagnostic purposes. These include modal analysis, enhanced location techniques, and novel signal processing approaches. A case study is presented on a landing gear component undergoing fatigue loading in which a linear location analysis using conventional techniques identified the position of fracture and final rupture of the specimen. A principal component analysis approach was used to separate noise signals from signals arising from fatigue cracks, which identified and located further fatigue crack positions, subsequently confirmed by magnetic particle inspection. Kernel probability density functions are used to aid visualization of the damage location.

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Acoustic Emission Source Location for Steel Pipe and Pipeline Applications: The Role of Arrival Time Estimation

Cited by 41 publications

References 19 publications

Water and Wastewater Pipe Nondestructive Evaluation and Health Monitoring: A Review

Water and Wastewater Pipe Nondestructive Evaluation and Health Monitoring: A Review

Towards improved damage location using acoustic emission

Acoustic emission for monitoring aircraft structures

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