Underwater pipeline impact localization using piezoceramic transducers

Zhu, Junxiao; Ho, Siu Chun Michael; Patil, Devendra; Wang, Ning; Hirsch, Rachel; Song, Gangbing

doi:10.1088/1361-665x/aa80c9

Cited by 49 publications

(35 citation statements)

References 58 publications

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“…(a) Jumper pipepline about to be submerged in water at the Neutral Buoyancy Lab; (b) pipeline submerged in 40 ft of water; (c) impact events generated by divers; (d) overall set up of the experiment, with a topside motor causing pipeline vibrations; (e) close up of underwater pipeline with marked impact points. 136 ''AE'') can occur due to impact-induced micro-damages to the structure. However, in the above literature, the signal used to isolate the impact point are the guided stress waves generated by the impact, which are generally much stronger than AE signals, especially when the structural material is minimally damaged by the impact event.…”

Section: Electrical Phenomenamentioning

confidence: 99%

Inspection and monitoring systems subsea pipelines: A review paper

El-Borgi

Patil

et al. 2019

Structural Health Monitoring

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159

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One of the largest movers of the world economy is the oil and gas industry. The industry generates billions of barrels of oil to match more than half the world’s energy demands. Production of energy products at such a massive scale is supported by the equally massive oil and gas infrastructure sprawling around the globe. Especially characteristic of the industry are vast networks of pipelines that traverse tens of thousands of miles of land and sea to carry oil and gas from the deepest parts of the earth to faraway destinations. With such lengths come increased chances for damage, which can have disastrous consequences owing to the hazardous substances typically carried by pipelines. Subsea pipelines in particular face increased risk due to the typically harsher environments, the difficulty of accessing deepwater pipelines, and the possibility of sea currents spreading leaked oil across a wide area. The opportunity for research and engineering to overcome the challenge of subsea inspection and monitoring is tremendous and the progress in this area is continuously generating exciting new developments that may have far reaching benefits far outside of subsea pipeline inspection and monitoring. Thus, this review covers the most often used subsea inspection and monitoring technologies as well as their most recent developments and future trends.

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Section: Electrical Phenomenamentioning

confidence: 99%

Inspection and monitoring systems subsea pipelines: A review paper

El-Borgi

Patil

et al. 2019

Structural Health Monitoring

Self Cite

159

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“…In most applications, the Lamb wave is generated and received by piezoelectric transducer sensor distributed on the test specimen [7,8]. Piezoelectric transducers made of Lead Zirconate Titanate is small size, high sensitivity and broad dynamic range, which can be used as either actuators or sensors due to their piezoelectric e ect and vice versa [9][10][11]. e SHM technology based on Lamb wave and piezoelectric transducer is an e cient SHM method, more and more researchers apply it to large area monitoring, active and passive monitoring, small damages monitoring and online monitoring [12][13][14].…”

Section: Introductionmentioning

confidence: 99%

An Aircraft Pallet Damage Monitoring Method Based on Damage Subarea Identification and Probability-Based Diagnostic Imaging

Liu

Yue

et al. 2019

Journal of Advanced Transportation

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To improve the safety and economy of aircraft pallet use, an aircraft pallet damage monitoring method based on damage subarea identification and probability-based diagnostic imaging is proposed. In the proposed method, first, the large aircraft pallet monitoring area is divided into rectangular subareas, and a piezoelectric transducer sensor is pasted on each vertex of the rectangular subarea that is used to excitation and sensing the Lamb wave. Second, the damage subarea is identified according to the diagonal damage indexes. Third, the damage position in the damage subarea is calculated using the probability-based diagnostic imaging method and coordinate probability weighted algorithm. Finally, the aircraft pallet damage can be localized based on the damage subarea position. Frequency selection and damage simulation study results show that the Lamb wave is sensitive to aircraft pallet damage whose centre frequency ranges from 50 kHz to 150 kHz, and the damage index of a steel ball is less than that of all real aircraft pallet damage from 95 kHz to 125 kHz. The verification results show that the proposed method can locate aircraft pallet damage with an error of less than 2 cm.

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“…Sudden leakages are mostly caused by third-party earth work, heavy vehicle rolling, geological changes, and impacts [8,9]. There is extensive literature on sudden leakage detection [10][11][12][13], such as the commonly used negative pressure wave (NPW) method [14][15][16] and the fiber-optic-based method [17,18].…”

Section: Introductionmentioning

confidence: 99%

An EKF-Based Method and Experimental Study for Small Leakage Detection and Location in Natural Gas Pipelines

Hou

Zhu

2019

Applied Sciences

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Small leaks in natural gas pipelines are hard to detect, and there are few studies on this problem in the literature. In this paper, a method based on the extended Kalman filter (EKF) is proposed to detect and locate small leaks in natural gas pipelines. First, the method of a characteristic line is used to establish a discrete model of transient pipeline flow. At the same time, according to the basic idea of EKF, a leakage rate is distributed to each segment of the discrete model to obtain a model with virtual multi-point leakage. As such, the virtual leakage rate becomes a component of the state variables in the model. Secondly, system noise and measurement noise are considered, and the optimal hydraulic factors such as leakage rate are estimated using EKF. Finally, by using the idea of an equivalent pipeline, the actual leakage rate is calculated and the location of leakage on the pipeline is assessed. Simulation and experimental results show that this method can consistently predict the leakage rate and location and is sensitive to small leakages in a natural gas pipeline.

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Underwater pipeline impact localization using piezoceramic transducers

Cited by 49 publications

References 58 publications

Inspection and monitoring systems subsea pipelines: A review paper

Inspection and monitoring systems subsea pipelines: A review paper

An Aircraft Pallet Damage Monitoring Method Based on Damage Subarea Identification and Probability-Based Diagnostic Imaging

An EKF-Based Method and Experimental Study for Small Leakage Detection and Location in Natural Gas Pipelines

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