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    Volume 44, Issue 4 (July 2016)

    Three-Point Bending Fracture Behavior of Cracked Giant Magnetostrictive Materials Under Magnetic Fields

    (Received 12 May 2014; accepted 21 May 2015)

    Published Online: 12 July 2016

    CODEN: JTEVAB

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    Abstract

    This paper numerically and experimentally investigated the three-point bending fracture behavior of cracked giant magnetostrictive materials under magnetic fields. Three-point bending fracture tests were carried out using the single-edge precracked-beam (SEPB) specimens, and the fracture loads were measured under magnetic fields. The crack was created normal to the direction of easy magnetization. Plane strain finite element analysis (FEA) was also performed, and the effect of magnetic fields on the energy release rate and on the apparent fracture toughness (critical energy release rate obtained using the fracture load) was discussed in detail. To the author's knowledge, this work is the first attempt to study the effect of magnetic fields on the fracture behavior of giant magnetostrictive materials.


    Author Information:

    Narita, Fumio
    Department of Materials Processing, Graduate School of Engineering, Tohoku Univ., Sendai,

    Shikanai, Koji
    Department of Materials Processing, Graduate School of Engineering, Tohoku Univ., Sendai,

    Shindo, Yasuhide
    Department of Materials Processing, Graduate School of Engineering, Tohoku Univ., Sendai,

    Mori, Kotaro
    Faculty of Engineering, Department of Mechanical Engineering, Ibaraki University, Hitachi,


    Stock #: JTE20140439

    ISSN:0090-3973

    DOI: 10.1520/JTE20140439

    Author
    Title Three-Point Bending Fracture Behavior of Cracked Giant Magnetostrictive Materials Under Magnetic Fields
    Symposium ,
    Committee E08