Enhancement and Detection of Mechanical Damage MFL Signals from Gas Pipeline Inspection

Afzal, Muhammad; Kim, Jae‐Joon; Удпа, Сатиш С.; Удпа, Лалита; Lord, W.

doi:10.1007/978-1-4615-4791-4_103

Cited by 11 publications

(2 citation statements)

References 2 publications

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“…In the industrial sector, numerous mature systems have been deployed for inspecting defects in long pipeline systems. These systems integrate full-array MFL sensors to rapidly inspect pipe conditions [ 33 , 34 , 35 ]. However, for in-pipe inspection robots traversing large pipelines, the excessive contact force from fully arrayed MFL sensors with permanent magnets significantly burdens the robot’s drive system.…”

Section: Introductionmentioning

confidence: 99%

Development of an In-Pipe Inspection Robot for Large-Diameter Water Pipes

Jeon,

Jung,

Bae

et al. 2024

Sensors

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This paper describes the development of an in-pipe inspection robot system designed for large-diameter water pipes. The robot is equipped with a Magnetic Flux Leakage (MFL) sensor module. The robot system is intended for pipes with diameters ranging from 900 mm to 1200 mm. The structure of the in-pipe inspection robot consists of the front and rear driving parts, with the inspection module located centrally. The robot is powered by 22 motors, including eight wheels with motors positioned at both the bottom and the top for propulsion. To ensure that the robot’s center aligns with that of the pipeline during operation, lifting units have been incorporated. The robot is equipped with cameras and LiDAR sensors at the front and rear to monitor the internal environment of the pipeline. Pipeline inspection is conducted using the MFL inspection modules, and the robot’s driving mechanism is designed to execute spiral maneuvers while maintaining contact with the pipeline surface during rotation. The in-pipe inspection robot is configured with wireless communication modules and batteries, allowing for wireless operation. Following its development, the inspection robot underwent driving experiments in actual pipelines to validate its performance. The field test bed used for these experiments is approximately 1 km in length. Results from the driving experiments on the field test bed confirmed the robot’s ability to navigate various curvatures and obstacles within the pipeline. It is posited that the use of the developed in-pipe inspection robot can reduce economic costs and enhance the safety of inspectors when examining aging pipes.

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Section: Introductionmentioning

confidence: 99%

Development of an In-Pipe Inspection Robot for Large-Diameter Water Pipes

Jeon,

Jung,

Bae

et al. 2024

Sensors

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“…Consider a sequence qi{n) in this set for the analysis of zerocrossings representation of the octave filterbank output. We can express the two ZCR parameters for qi{n) as, 1. Zcro-crossings locations.…”

Section: Zero-crossings Of the Filterbank Outputmentioning

confidence: 99%

Wavelet based multiresolution zero-crossing representations

Afzal

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The quality of this reproduction is dependent upon ttie quality of the copy submitted. Broken or indistir>ct print, colored or poor quality illustrations and photographs, print bleedthrough, substandard margins, and improper alignnr)ent can adversely affect reproduction. In the unlikely event that the author dkl rH)t send UMI a complete manuscript and there are missing pages, these will t>e noted. Also, if unauthorized copyright material had to be removed, a note will indicate the deletion. Oversize materials (e.g., maps, drawings, charts) are reproduced by sectioning the original, beginning at the upper left-hand comer and continuing from left to right in equal sectk)ns with small overiaps. Photographs included in the original manuscript have been reproduced xerographically in this copy. Higher quality 6' x 9' black arxJ white photographic prints are available for any photographs or illustrations appearing in this copy for an additional charge. Contact UMI directly to order.

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A novel method for defects marking and classifying in MFL inspection of pipeline

Pan

Gao

2023

International Journal of Pressure Vessels and Piping

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Enhancement and Detection of Mechanical Damage MFL Signals from Gas Pipeline Inspection

Cited by 11 publications

References 2 publications

Development of an In-Pipe Inspection Robot for Large-Diameter Water Pipes

Development of an In-Pipe Inspection Robot for Large-Diameter Water Pipes

Wavelet based multiresolution zero-crossing representations

A novel method for defects marking and classifying in MFL inspection of pipeline

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