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Numerical Prediction of Signal for Magnetic Flux Leakage Benchmark Task
AIP Conference Proceedings, 2003Numerical results predicted by the finite element method based code are presented. The nonlinear magnetic time‐dependent benchmark problem proposed by the World Federation of Nondestructive Evaluation Centers, involves numerical prediction of normal (radial) component of the leaked field in the vicinity of two practically rectangular notches machined ...
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Modeling the Effects of Pit Corner Geometry on Magnetic Flux Leakage Signals
Research in Nondestructive Evaluation, 2006Three-dimensional magnetic finite element analysis (FEA) has been used to simulate the effects of different pit corner geometries on magnetic flux leakage (MFL) signals. The pit corner geometries studied fall into three main categories: right angle, smooth triangular, and smooth round.
Vijay Babbar, Lynann Clapham
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Investigations of magnetic flux leakage and magnetic Barkhausen noise signals from pipeline steel
Journal of Physics D: Applied Physics, 1997Magnetic flux leakage (MFL) is used for in-line inspection of underground oil and gas pipelines. MFL signals are sensitive to the line pressure which should be taken into account when estimating the sizes of defects. MFL signals have been studied from electrochemically milled pits with 50% penetration in pipeline steel under the influence of different ...
K Mandal +3 more
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Signal processing and defect analysis of pipeline inspection applying magnetic flux leakage methods
Intelligent Service Robotics, 2014Corrosion, stresses and mechanical damage of oil and gas pipelines can result in catastrophic failures, so pipeline safety evaluation is an important problem of oil and gas transmission. To evaluate the pipeline safety, this paper described a novel magnetic flux leakage (MFL) inspection device, and the designing MFL intelligent inspection pig was used ...
Bingyi Mao +4 more
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The Effects of Angular Displacement on Magnetic Flux Leakage Metal Loss Signals
CORROSION 2009, 2009Abstract Magnetic flux leakage is one of the most common and robust methods of ILI (In Line Inspection) used by pipeline operators worldwide to detect and characterize a broad range of pipeline features and anomalies. Magnetic flux leakage data signals are influenced by the shape and configuration of metal loss zones; with the feature ...
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The effects of magnetizer velocity on magnetic flux leakage signals
NDT & E International, 1997openaire +1 more source
A magnetic shielding strategy for magnetic sensor in magnetic flux leakage testing
Journal of Magnetism and Magnetic Materials, 2022Pengpeng Shi, Sanqing Su
exaly
Finite element calculation of magnetic flux leakage detector signals
NDT & E International, 1997openaire +1 more source