Giant magnetostrictive materials began to be developed during the 1970s. One material in particular was developed by the Naval Ordnance Lab for use in sonar applications. TERFENOL-D, named for its primary constituents of terbium, iron and dysprosium and place of invention, generates usable strains of 1 mil per inch of material in an applied magnetic field, TERFENOL-D actuators provide 220 N to 880 N of force. Oil well logging shear wave generation using TERFENOL-D sources is accomplished with 1 A of current, providing 3,000 N of force. TERFENOL-D exhibits inverse magnetostriction, or the Villari effect, making it able to provide on demand nondestructive evaluation and inspection of structures, commonly referred to as magnetotagging.


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    Title :

    Magnetostriction: revealing the unknown


    Contributors:
    Jones, B. (author) / Chen Liang (author)


    Publication date :

    1996-03-01


    Size :

    561459 byte




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English



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