Research on Recognition Algorithm of Offshore Oil Pipeline Defect Inspection Based on Magnetic Flux Leakage Method
نویسندگان
چکیده
منابع مشابه
Effect of Lift-off on Pipeline Magnetic Flux Leakage Inspection
On pipeline magnetic flux leakage (MFL) inspection, welds and debris are present in all pipelines and cause lift-off of the sensors and/or the magnetizer of the magnetic flux leakage inspection tool, and have the potential to affect the acquired magnetic flux leakage data. By adopting ANSYS software to simulate the effect of lift-off on the MFL signal. The results of this research indicate that...
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THIS paper presents a new approach for detection of oil-gas pipeline corrosion defects in which pipeline magnetic flux leakage (MFL) detection system is adopted. To test the new approach, some artificial defects are simulated mathematically on the surface of oil-gas pipes to simulate different defects happening in practice. The interference eliminating method is introduced for compensation of d...
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In order to enhance the precision of the pipeline MFL (Magnetic Flux Leakage) detecting system measurement, detailed flux information obtained by decreasing time and space intervals for sampling is needed. The huge amount of data produced by this will exceed the processing ability of the system. Data compression is an effective way of solving this problem. In this paper we present a diagnostica...
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(1) A mathematical model of weldpool surface deformation and keyhole formation in PAW+TIG DSAW process is developed on the basis of magnetohydrodynamic theory and calculus of variations with considering all kinds of dynamic factors acting on the weldpool. (2) Welding current of PAW+TIG DSAW process flows in from the TIG bottom side of workpiece, along the keyhole and metal neighborhood and away...
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ژورنال
عنوان ژورنال: Journal of the Japan Petroleum Institute
سال: 2005
ISSN: 1346-8804,1349-273X
DOI: 10.1627/jpi.48.243