Method and apparatus for magnetic inspection through adjustable pulsed alternating and direct current magnetic fields
US4058762A · kind A · utility
10Cited by
3References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 4, 1976 |
| Grant date | Nov 15, 1977 |
| Priority date | — |
| Expiry date | Jun 4, 1996 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N27/72
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An illustrative embodiment of the invention provides a method and apparatus for magnetic inspection of areas of interest in ferromagnetic material by means of both alternating and direct current induced magnetic fields. Moreover, the magnetic fields may be pulsed sequentially and/or simultaneously to detect defects deep within the area of interest.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.