Magnetostrictive transducer and apparatus and method for monitoring structural health using the same
US8305074B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 16, 2010 |
| Grant date | Nov 6, 2012 |
| Priority date | — |
| Expiry date | May 11, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2291/0422
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A magnetostrictive transducer that generates a large shear horizontal (SH) wave useful for non-destructive testing of a plate member, and method and apparatus for structural health monitoring by using the magnetostrictive transducer. The magnetostrictive transducer includes: a magnetostrictive patch array comprising a plurality of magnetostrictive patches that have different radii of curvature, and have the same center of curvature when arranged on a plate member and form an overall fan-shape; a static magnetic field forming unit comprising two magnets that are respectively installed on both sides of the magnetostrictive patch so that a magnetic field is formed in parallel to an arc direction of the magnetostrictive patch; and a dynamic magnetic field forming unit comprising a wound coil comprising a plurality of curved portions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.