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Thursday, March 5 • 15:15 - 17:15
Poster: 'On Magneto-Optical Magnetic Flux Leakage Sensing,' David Trevino-Garcia, Rice University

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We investigate the feasibility of using Magnetic Optic films (MO-films) as sensors for Magnetic Flux Leakage (MFL) inspection technique as well as the accuracy of existing analytical MO-film models used for interpretation. We illustrate the accuracy of MO-film sensors and their analytical models introduced by Shamonin etal [1] through a comparison between MO-film experimental responses and results computed through MO analytical models. The mathematical models are being fed by accurate data from the RiSYS testbed setup’s experimental MFL surface-scans (Hall-effect sensor) and simulations made through an analytical method known as Magnetic Dipole Model (MDM) [2] widely used in MFL field. MFL signal occurrences is produced by a electromagnetic saturated ferromagnet specimen in the presence of a surface breaking defect, the MFL components of the MFL signal (axial, radial and tangential) are measured by a Hall-effect sensor through a line-scan (sampling measurements along a line path). The implemented MO-film sensor on this work is an iron garnet film grown on [111]-oriented substrates, which is used as magneto-optic indicator film for the visualisation of magnetic field. Our analysis shows a good agreement between experimental measured data and analytical simulations with the MO-film and its analytical model.  

Thursday March 5, 2015 15:15 - 17:15 CST
BioScience Research Collaborative 6500 Main Street, Houston, Tx 77005