Ferromagnetic resonance probe liftoff suppression apparatus
US4528506A · kind A · utility
12Cited by
8References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 23, 1982 |
| Grant date | Jul 9, 1985 |
| Priority date | — |
| Expiry date | Nov 23, 2002 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N27/9053
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A liftoff suppression apparatus utilizing a liftoff sensing coil to sense the amount a ferromagnetic resonance probe lifts off the test surface during flaw detection and utilizing the liftoff signal to modulate the probe's field modulating coil to suppress the liftoff effects.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.