MAGNETOSTRICTIVE TRANSDUCER MODULE FOR GENERATING AND MEASURING GUIDED WAVES

摘要

PURPOSE: A magnetostrictive transducer module for converting guided ultrasonic-waves is provided to enable a measuring point to be freely changed since a separate ferromagnetic material is not needed in measuring a variety of points. CONSTITUTION: A magnetostrictive transducer module for converting guided ultrasonic-waves comprises a case(1), a coil(2), a bias magnet(3) and a yoke(4). One side of the case is open and a wire connecting unit(11) is formed on the opposite side of the opening. The coil is installed in the case and generates magnetic field when the guided ultrasonic-waves are sent. The coil measures magnetic field, which is guided when the guided ultrasonic-waves are received. The bias magnets are installed on both sides of the coil and apply electromagnetic field to a ferromagnetic material. Fixed blades(41) are formed on both sides of the yoke, which make contact with the bias magnets.