Artículo
Monitoring structural transformations in metamagnetic shape memory alloys by non-contact GMI technology
Beato López, Juan Jesús; la Roca, Paulo Matías
; Algueta Miguel, José María; Garaio, Eneko; Sánchez Alarcos, Vicente; Recarte, Vicente; Gómez Polo, Cristina; Pérez de Landazábal Berganzo, José Ignacio
Fecha de publicación:
10/2023
Editorial:
IOP Publishing
Revista:
Smart Materials & Structures
ISSN:
0964-1726
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
Different applications based on metamagnetic shape memory alloy (MSMA) require monitoring the evolution of the martensitic transformation (MT) to optimize the actuation mechanism. To avoid interaction with the active material, a non-contact technique would be ideal. Nevertheless, non-contact detection involves complex methods like diffraction, optical analysis, or electromagnetic technology. The present work demonstrates that the MT can be monitored without interaction with the active material using a low-cost technology based on the Giant Magnetoimpedance (GMI) effect. The GMI sensor is based on a (CoFe)SiB soft magnetic wire submitted to an alternating current and whose second harmonic voltage variation allows to detect changes in the strength of the stray magnetic fields linked to the metamagnetic phase transition. The sensor has been tested using the MT of a NiMnInCo MSMA. A specific application for environmental temperature control using the non-contact GMI sensor is proposed.
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Articulos(CCT - PATAGONIA NORTE)
Articulos de CTRO.CIENTIFICO TECNOL.CONICET - PATAGONIA NORTE
Articulos de CTRO.CIENTIFICO TECNOL.CONICET - PATAGONIA NORTE
Citación
Beato López, Juan Jesús; la Roca, Paulo Matías; Algueta Miguel, José María; Garaio, Eneko; Sánchez Alarcos, Vicente; et al.; Monitoring structural transformations in metamagnetic shape memory alloys by non-contact GMI technology; IOP Publishing; Smart Materials & Structures; 32; 10; 10-2023; 1-8
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