Patent ID: 6804875
Filing Date: 2004-10-19
Classification: B06B,G01V,G10K,Y10T

Abstract:
A method of mounting a magnetostriction oscillator to an object to which an elastic wave is transmitted, the magnetostriction oscillator comprising an excitation coil wound around a stack of sheets of a metallic magnetostriction material bonded together with an electrically insulating bonding agent, for generating an elastic wave in a direction parallel to the sheets by passing an excitation current through the excitation coil, the method comprising:forming two opposing elastic wave radiation end surfaces of a magnetostriction oscillator by stacking the sheets to form two parallel end surfaces intersecting at right angles with an elastic wave radiation direction, the end surfaces of the magnetostriction oscillator being spaced apart from each other by a distance A at room temperature; providing, in an oscillator support, a hole or a recess having two parallel wall surfaces intersecting at right angles with the elastic wave radiation direction and spaced apart from each other by a distance B at room temperature, wherein the distance B is smaller than the distance A; cooling the magnetostriction oscillator until the distance between the two end surfaces of the magnetostriction oscillator becomes a distance A1, smaller than the distance B; inserting the magnetostriction oscillator, while cooled, into the hole or recess of the oscillator support; and raising the temperature of the magnetostriction oscillator to room temperature to bring the end surfaces of the magnetostriction oscillator into direct contact with respective wall surfaces of the oscillator support.