Guided Wave Monitoring of Industrial Pipework – Improved Sensitivity System and Field Experience

Vogt, Thomas; Heinlein, Sebastian; Milewczyk, Josh; Mariani, Stefano; Jones, R. E.; Cawley, P.

doi:10.1007/978-3-030-64594-6_79

Cited by 1 publication

(1 citation statement)

References 13 publications

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“…In contrast, ultrasonic guided waves (GWs) have been demonstrated to be an efficient tool for structural health monitoring [9][10][11]. They are capable of covering large distances in pipelines, being sensitive to cracks and corrosion [12][13][14]. Usually, ordinary pipeline screening is performed by a single transducer array attached to the pipe in a ring form.…”

Section: Introductionmentioning

confidence: 99%

Acoustic Forward Model for Guided Wave Propagation and Scattering in a Pipe Bend

Rasgado-Moreno

Rist

Land

et al. 2022

Sensors

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The sections of pipe bends are hot spots for wall thinning due to accelerated corrosion by fluid flow. Conventionally, the thickness of a bend wall is evaluated by local point-by-point ultrasonic measurement, which is slow and costly. Guided wave tomography is an attractive method that enables the monitoring of a whole bend area by processing the waves excited and received by transducer arrays. The main challenge associated with the tomography of the bend is the development of an appropriate forward model, which should simply and efficiently handle the wave propagation in a complex bend model. In this study, we developed a two-dimensional (2D) acoustic forward model to replace the complex three-dimensional (3D) bend domain with a rectangular domain that is made artificially anisotropic by using Thomsen parameters. Thomsen parameters allow the consideration of the directional dependence of the velocity of the wave in the model. Good agreement was found between predictions and experiments performed on a 220 mm diameter (d) pipe with 1.5d bend radius, including the wave-field focusing effect and the steering effect of scattered wave-fields from defects.

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