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Title: Steel characteristics measurement system using Barkhausen jump sum rate and magnetic field intensity and method of using same

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. 7 figs.

Inventors:
; ;
Issue Date:
Research Org.:
American Iron and Steel Institute
OSTI Identifier:
462861
Patent Number(s):
5,619,135
Application Number:
PAN: 8-503,263
Assignee:
American Iron and Steel Inst., Washington, DC (United States)
DOE Contract Number:  
FC07-93ID13205
Resource Type:
Patent
Resource Relation:
Other Information: PBD: 8 Apr 1997
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 42 ENGINEERING NOT INCLUDED IN OTHER CATEGORIES; STEELS; HARDNESS; MAGNETIC TESTING; MAGNETIC PROPERTIES; MAGNETIC FIELDS; DATA PROCESSING; MEASURING INSTRUMENTS

Citation Formats

Kohn, G, Hicho, G, and Swartzendruber, L. Steel characteristics measurement system using Barkhausen jump sum rate and magnetic field intensity and method of using same. United States: N. p., 1997. Web.
Kohn, G, Hicho, G, & Swartzendruber, L. Steel characteristics measurement system using Barkhausen jump sum rate and magnetic field intensity and method of using same. United States.
Kohn, G, Hicho, G, and Swartzendruber, L. Tue . "Steel characteristics measurement system using Barkhausen jump sum rate and magnetic field intensity and method of using same". United States.
@article{osti_462861,
title = {Steel characteristics measurement system using Barkhausen jump sum rate and magnetic field intensity and method of using same},
author = {Kohn, G and Hicho, G and Swartzendruber, L},
abstractNote = {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. 7 figs.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1997},
month = {4}
}