![]() ![]() The results obtained from the experimental tests demonstrate the efficacy of the proposed approach. Most of the flux is set up in the core of the solenoid and. When a current is passed through a solenoid, magnetic flux is produced by it. Taking an example of solenoid you can explain the leakage flux and the fringing both. On a corrosion spot, a leakage field will arise. Leakage flux is defined as the magnetic flux which does not follow the particularly intended path in a magnetic circuit. A strong magnet induces a magnetic field in the material. MFL and optical inspection techniques are applied to a test specimen containing the nearby pittings. MFL is a detection technique, which detects volumetrically changes. The main contributions of this study are to develop a new calibration method based on the defect depth, defect area as well as the amplitude of the corresponding MFL signal and propose a novel combined approach for detection and identification of the nearby pittings. In order to ensure reliable measurement for this case, the MFL technique is combined with the optical inspection technique. However due to the interaction between the leakage fluxes, nearby pittings can-not be discriminated and properly assessed using the conventional MFL technique. This has been shown to give good results on varying degrees of the single defects. Therefore, calibration curves are generally used to estimate the depths of the defects from the measured MFL signals. Examination of Steel Tubular Products Using Magnetic Saturation. Magnetic Flux Leakage (MFL) is an indirect measurement technique. astme570972004e1-Standard Practice for Flux Leakage Examination of Ferromagnetic Steel. Department of Mechanical Engineering, University of Science and Technology, Iran ![]()
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