ALL DIRECTION SHEAR WAVE MAGNETOSTRICTIVE PATCH TRANSDUCER AND WINDING METHOD

摘要

According to the present invention, a transducer includes a permanent magnet generating a static magnetic field; a patch disposed on the lower side of the permanent magnet and formed with a material deformed in accordance with a change in a magnetic field; an insulator disposed on the upper side of the patch; and a coil wound around the patch and the insulator in a predetermined shape and leading a moving magnetic field to the patch in accordance with a current applied, wherein the coil is wound in a shape to make the direction of the static magnetic field generated by the permanent magnet and the direction of the dynamic magnetic field generated by the wound coil orthogonal to each other.