Steel characteristics measurement system using Barkhausen jump sum rate and magnetic field intensity and method of using same
US5619135A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 17, 1995 |
| Grant date | Apr 8, 1997 |
| Priority date | — |
| Expiry date | Jul 17, 2015 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R33/12
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A steel hardness measurement system and method of using same are provided for measuring at least one mechanical or magnetic characteristic of a ferromagnetic sample as a function of at least one magnetic characteristic of the sample. A magnetic field generator subjects the sample to a variable external magnetic field. The magnetic field intensity of the magnetic field generated by the magnetic field generating means is measured and a signal sensor is provided for measuring Barkhausen signals from the sample when the sample is subjected to the external magnetic field. A signal processing unit calculates a jump sum rate first moment as a function of the Barkhausen signals measured by the signal sensor and the magnetic field intensity, and for determining the at least one mechanical or magnetic characteristic as a function of the jump sum rate first moment.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.