Magnetic flux leakage modeling for mechanical damage in transmission pipelines

Local area magnetization and inspection method for aerial pipelines

“…However, the magnetic intensity in the cross-section is not easy to detect at the surface of the pipeline. But the magnetic flux leakage at the hole hints the information of the main magnetic flux [6][7][8]. So if the values of the magnetic flux leakage of the different points in the circumference are detected, the distribution will be obtained approximately.…”

Mechanical damage detection using magnetic flux leakage tools: modeling the effect of dent geometry and stresses

“…Magnetic finite element analysis (FEA) has become a powerful modeling tool for studying MFL signals from corrosion defects [1][2][3][4]. In this paper, we apply magnetic FEA to the case of circular dents in a plate sample.…”

Comparative Calibration of Corrosion Measurements Using K-Nearest Neighbour Based Techniques

“…The methods described in this paper were built on Hinton's & Roweis's weight whilst using KNN. The exponential function defined in (6) will maximize the effect of the nearest neighbor to the point 02001-p. 3 that requires calibration, and by that, the interpolator will get the properties of the closest neighbor point, compared to the other surrounding points.…”

“…UT is known to have better sizing accuracy since absolute a Corresponding author : yaman_85@hotmail.com measurement can be obtained when compared to MFL which provides relative measurements [2]. Table 1 shows the sizing accuracy for different corrosion detection techniques [3]. As shown in Table 1, both MFL and UT technologies have certain limitations regarding the accurate measurement of the defects within the system since both devices suffer from a certain error margin depending on the device's sizing accuracy.…”