Detection of Magnetomechanical Effect in Structural Steel Using GMR 2nd Order Gradiometer Based Sensors
Articolo
Data di Pubblicazione:
2019
Abstract:
The magneto-mechanical behaviour of structural steel specimens stressed up to the plastic
deformation stage was investigated using a 2nd order gradiometer based on Giant Magneto Resistive
(GMR) sensors. The correlation between the gradient of the magnetization and the dislocation density
before the crack initiation inside the test material was reported. The capability of the GMR scanning
sensor to detect the residual magnetization due to the tensile stress with a non-invasive technique
was demonstrated.
deformation stage was investigated using a 2nd order gradiometer based on Giant Magneto Resistive
(GMR) sensors. The correlation between the gradient of the magnetization and the dislocation density
before the crack initiation inside the test material was reported. The capability of the GMR scanning
sensor to detect the residual magnetization due to the tensile stress with a non-invasive technique
was demonstrated.
Tipologia CRIS:
01.01 Articolo in rivista
Keywords:
magneto-mechanical eects; non-destructive testing of materials; GMR devices
Elenco autori:
Vettoliere, Antonio; Granata, Carmine; Ruggiero, Berardo; Valentino, Massimo
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