Omnidirectional shear-horizontal-mode magnetostrictive transducer

The invention discloses an omnidirectional shear-horizontal-mode magnetostrictive transducer, and belongs to the ultrasonic nondestructive testing field. The transducer includes a cylindrical NdFeB magnet, an annular nickel sheet, an annular organic glass sheet and a manually wound coil. In the designed transducer, the coil manually wound along the circumference of the annular nickel sheet and the annular organic glass sheet is pasted on the surface of a to-be-tested plate structure, and the cylindrical NdFeB magnet is placed just above the coil; based on the magnetostrictive effect of a ferromagnetic material nickel, the annular nickel sheet can generate shear deformation and transfers the deformation to the plate structure, so as to stimulate omnidirectional shear-horizontal-mode SH waves in the plate structure. The omnidirectional shear-horizontal-mode magnetostrictive transducer and an array combination imaging algorithm are utilized to achieve large-scope and high-efficiency defect imaging of the plate structure, and have quite great application value and potential in the fields of plate structural health monitoring and nondestructive evaluation.