Barkhausen noise measurement probe with magnetoresistive sensor and cylindrical magnetic shield
US6583617B2 · kind B2 · utility
6Cited by
4References
16Claims
0Family size
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Key dates
| Filing date | Aug 28, 2001 |
| Grant date | Jun 24, 2003 |
| Priority date | — |
| Expiry date | Aug 28, 2021 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R33/12
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A Barkhausen probe includes a magnetizing field generator, a magnetoresistive magnetic field sensor, a direct current power supply for biasing the magnetoresistive magnetic field sensor and signal conditioning electronics. The Barkhausen probe is capable of generating and sensing the Barkhausen noise emanating from the surface of a cyclic magnetized specimen. The conditioned Barkhausen noise output of the signal conditioning electronics is usable as input to various analysis systems where textural analysis of the material can be performed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.