Physica status solidi. C, Conferences and critical reviews/Physica status solidi. C, Current topics in solid state physics · 2004 · 22 citations · 4 references
EngineeringElectrical EngineeringMaterials EngineeringElectromagneticsElectromagnetismSensorsCrack AssessmentFerromagnetic MaterialsFerromagnetismMagnetic CharacterizationMagnetic SensorsCrack DetectionGiant MagnetoimpedanceMagnetic Field SensingMagnetic Field SensorsMagnetic FluxMagnetic Flux DensityMagnetic Flux DistributionMagnetoimpedance Sensors
In this study, the variation of the magnetic flux distribution in a magnetised ferromagnetic material which has inhomogeneity as a crack is studied using giant magnetoimpedance, GMI, sensor. The sensor was moved by a specially designed moving system. The amorphous (Co0.94Fe0.06)72.5Si12.5B15 wire was used as a GMI sensor and 1 MHz with 5 mA ac current applied to the GMI sensor. A large decrease in the output voltage of the sensor circuit was observed when the sensor was moved on the top of the crack, after the further movement of the sensor the output voltage came back to the nearly previous value. (© 2004 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim)
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