| 摘要 |
The present invention relates to a method and an apparatus for structural diagnosis, which generates torsional waves upon a shaft, beam or pipe having arbitrary cross-sections, such as a circular cross-section, and senses existence or location of the cracks through analyzing reflected waves. The present invention provides a magnetostrictive transducer comprising a plurality of ferromagnetic strips attached, around circumference of a member having an arbitrary cross-section with a fixed inclination; a first housing disposed to surround the ferromagnetic strips, the first housing being made of insulating material; and a coil wound around the first housing. The magnetostrictive transducer according to the present invention can generate torsional waves upon a member when a current is supplied to the coil, and can measure reflected torsional waves. Further, the present invention provides an apparatus and a method for structural diagnosis using the magnetostrictive transducer.
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