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D. L. Atherton |
Finite Element Calculations and Computer Measurements of Magnetic Flux Leakage Patters for PITSTwo dimensional final element calculations for anomalous leakage fluxes generated by far side grooves in pipes inspected using magnetic leakage flux anomaly detectors are compared with precision computer controlled experimental measurements of three dimensional synthetic corrosion pits. The experimental measurements are presented as contour maps and surface plots. There is a strong linear correlation between peak anomalous radial flux densities calculated using two dimensional finite element techniques and those measured experimentally for the corresponding three dimensional anomalies. |

