Magnetostrictive transducer activation tool

摘要

At least one end of the magnetostrictive rod (1) in the magnetism circuit has an end fitted with a first composite cap comprising transformer metal pieces electrically insulated from each other and extending in the rod length direction. The first cap has a first region (19) connected to the end of the rod and a second adjacent region (20) with sloping surfaces (30). Also fitted to the same end of the rod is a second composite cap comprising transformer metal plates electrically insulated from each other, containing a female opening for receiving the first cap as a male part. The tool comprises an axially compressible magnetostrictive rod (1), a coil around the rod, and a magnetism circuit closing the magnetic field generated by the coil. At least one end of the rod is movable through a narrow cylindrical gap in the circuit, the gap containing generatrices parallel to the rod length direction. ELECTRONICS - PREFERRED FEATURES : The two caps have stumped cone shape.