Guided Wave Tomography of Pipe Bends

Brath, Alex J.; Simonetti, F.; Nagy, Péter B.; Instanes, Geir

doi:10.1109/tuffc.2017.2683259

Cited by 26 publications

(10 citation statements)

References 31 publications

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“…Furthermore, detection devices with the guided wave excitation method of pipeline were designed in [ 58 ]. Apart from this, many studies were carried out in [ 59 , 60 , 61 ] concerned with the mode conversion characteristics of guided waves passing through the bending parts of pipes. An electromagnetic acoustic transducer (EMAT) is based on electromagnetic coupling [ 62 ].…”

Section: Non-destructive Testing (Ndt) For In-line Inspectionmentioning

confidence: 99%

Pipeline In-Line Inspection Method, Instrumentation and Data Management

Qiu

Tian

Zeng

et al. 2021

Sensors

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Pipelines play an important role in the national/international transportation of natural gas, petroleum products, and other energy resources. Pipelines are set up in different environments and consequently suffer various damage challenges, such as environmental electrochemical reaction, welding defects, and external force damage, etc. Defects like metal loss, pitting, and cracks destroy the pipeline’s integrity and cause serious safety issues. This should be prevented before it occurs to ensure the safe operation of the pipeline. In recent years, different non-destructive testing (NDT) methods have been developed for in-line pipeline inspection. These are magnetic flux leakage (MFL) testing, ultrasonic testing (UT), electromagnetic acoustic technology (EMAT), eddy current testing (EC). Single modality or different kinds of integrated NDT system named Pipeline Inspection Gauge (PIG) or un-piggable robotic inspection systems have been developed. Moreover, data management in conjunction with historic data for condition-based pipeline maintenance becomes important as well. In this study, various inspection methods in association with non-destructive testing are investigated. The state of the art of PIGs, un-piggable robots, as well as instrumental applications, are systematically compared. Furthermore, data models and management are utilized for defect quantification, classification, failure prediction and maintenance. Finally, the challenges, problems, and development trends of pipeline inspection as well as data management are derived and discussed.

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Section: Non-destructive Testing (Ndt) For In-line Inspectionmentioning

confidence: 99%

Pipeline In-Line Inspection Method, Instrumentation and Data Management

Qiu

Tian

Zeng

et al. 2021

Sensors

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“…118,119 In addition to the hardware-based challenges of GWT, the presence of dispersion, scattering, and multiple modes can make data interpretation a difficult task. There is ongoing research in classification 120 and visualization/tomography [121][122][123] of defects based on GWT data. Figure 18 shows an example of GWT-based tomography to visualize defects in a pipe bend.…”

Section: Electrical Phenomenamentioning

confidence: 99%

“…Figure 18 shows an example of GWT-based tomography to visualize defects in a pipe bend. 123 For long-term monitoring, where the transducer array is permanently installed onto the pipeline, the use of a baseline (i.e. benchmark) is beneficial for detecting changes in the pipeline over time.…”

Section: Sensing Strategies For Subsea Pipeline Shmmentioning

confidence: 99%

Inspection and monitoring systems subsea pipelines: A review paper

El-Borgi

Patil

et al. 2019

Structural Health Monitoring

141

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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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“…However, there also exist many high-performance structural applications where anisotropic materials and structures are used. Composite pressure vessels [11], pipe elbows [12], and anisotropic stainless steel pipes [13] are some examples of such structures where routine inspection is required. Although guided wave testing has been proven to be a cost-effective and efficient non-destructive evaluation tool for anisotropic waveguides [14], [15], its utilization poses many difficulties.…”

Section: Introductionmentioning

confidence: 99%

Modeling the Effect of Anisotropy in Ultrasonic-Guided Wave Tomography

Ratassepp¹,

Rao

et al. 2022

IEEE Trans. Ultrason., Ferroelect., Freq. Contr.

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Most of the existing ultrasonic guided wave tomography approaches to map structural changes in plate-like waveguides are based on the assumption of an isotropic material model. However, there are many other engineering applications that are made of anisotropic materials and structures. Applying these techniques on such structures becomes complicated due to the anisotropic wave propagation behavior. The main challenge is to develop a suitable forward model that describes the wave propagation in such material, thereby enabling accurate reconstruction of the material properties. The present study proposes an anisotropic formulation of the acoustic forward model to map velocity variations induced by defects in anisotropic plates. The anisotropic behavior of the waves along the plate is simulated by implementing approximate anisotropic parameters. The velocity reconstruction is based on a full-waveform inversion algorithm, and its performance is investigated in the case of different degrees of anisotropy of the plate material and the defect. The results suggest that the method is highly suitable for imaging velocity changes due to defects. This is found to be the case when the defect has a similar anisotropic structure to the surrounding plate material. The validation experiment is performed on a multilayered composite plate with a circular defect of stiffness reduction using A0 mode, showing a very good performance of the reconstruction algorithm.

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Guided Wave Tomography of Pipe Bends

Cited by 26 publications

References 31 publications

Pipeline In-Line Inspection Method, Instrumentation and Data Management

Pipeline In-Line Inspection Method, Instrumentation and Data Management

Inspection and monitoring systems subsea pipelines: A review paper

Modeling the Effect of Anisotropy in Ultrasonic-Guided Wave Tomography

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