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      Permanent link:
      https://www.ias.ac.in/article/fulltext/boms/042/05/0238

    • Keywords

       

      Villari effect; magnetostrictive composites; FeGa powder.

    • Abstract

       

      This paper presents the results of the Villari effect study in FeGa magnetorheological composites with very low stresses. The composites consist of a silicone matrix and Fe75Ga25 powder of size ranging from 50 to 100 $\mu$m. Two types of composites, one is with 45 wt% and the other one with 30 wt% of Fe75Ga25 powder have been manufactured. The Villari effect has been measured in both samples as-manufactured and in those in which a 1 T magnetic field has been applied after curing. The results indicate that the composites with an applied field of 1 T after curing show the greatest Villari signal evenwithout any applied magnetic field. This fact allows a design of a low-cost force sensor and high performance. A simple model, based on the change in the cross-section of the composite, has been developed to explain the results obtained.

    • Author Affiliations

       

      G RIESGO1 L ELBAILE2 J CARRIZO2 G GARCÍA2 R D CRESPO2 M A GARCÍA3 Y TORRES4 J A GARCÍA2

      1. Centro de Seguridad Marítima Integral Jovellanos, Camín del Centro de Salvamento no. 279, 33393 Gijón, Spain
      2. Departamento de Física de la Universidad de Oviedo, c/ Calvo Sotelo s/n, 33007 Oviedo, Spain
      3. Departamento de Ciencia de los Materiales, Universidad de Oviedo, c/ Independencia no. 13, 33004 Oviedo, Spain
      4. Departamento de Ingeniería y Ciencia de los Materiales y el Transporte, Universidad de Sevilla, 41092 Seville, Spain
    • Dates

       
  • Bulletin of Materials Science | News

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