Electromagnetic-acoustic measuring apparatus
US4450725A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Jun 9, 1982 |
| Grant date | May 29, 1984 |
| Priority date | — |
| Expiry date | Jun 9, 2002 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S505/879
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An electromagnetic-acoustic measuring apparatus is disclosed in which an exciting coil is wound around a body to be inspected in order to generate a magnetic field within the body in the direction parallel to a surface of the body, a transmitting coil is used to generate mechanical strain in the surface of the body by utilizing the magnetic field, a receiving coil detects the mechanical strain at the surface of the body after the mechanical strain has been propagated in the body, the exciting coil is enclosed with a separable core, the transmitting and receiving coils are supported by respective head portions of pole pieces fixed to the core, and the transmitting and receiving coils and pole pieces are water-cooled by means of cooling pipes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.