Method and apparatus for the on-line measurement of the strength

Details Method and apparatus for the on-line measurement of the strength Method and apparatus for the on-line measurement of the strength

1999-04-23

2000-10-17

Strecker, Gerard

Electricity: measuring and testing

Magnetic

Stress in material measurement

324232, 324235, 324242, 324243, G01N 2772, G01N 2780, G01B 724, G01R 3312

Patent

active

061337315

ABSTRACT:
A method and an apparatus are provided for measuring the mechanical properties of ferromagnetic, elongated structures, such as cables, through the measurement of Barkhausen signals. The method comprises creating a magnetic field, that varies as a function of time or of position, and measuring the Barkhausen signals rate as a function of the magnetic field for each section of the structure to be tested. The mechanical properties are determined for each section from the Barkhausen signals relative to it. The apparatus comprises means for generating the variable magnetic field, a plurality of Barkhausen signal sensors distributed along the structure length, and means for comparing the signals relative to each section to be tested.

REFERENCES:
patent: 4096437 (1978-06-01), Kitzinger
patent: 4495465 (1985-01-01), Tomaiuolo et al.
patent: 4792755 (1988-12-01), Huschelrath et al.
patent: 4931730 (1990-06-01), Olsen et al.
patent: 5008621 (1991-04-01), Jiles
patent: 5313405 (1994-05-01), Jiles et al.
patent: 5565773 (1996-10-01), Inaguma et al.
patent: 5619135 (1997-04-01), Kohn et al.
patent: 5804964 (1998-09-01), Hamelin et al.
R. Rautioaho, J. Kivimaa and M. Moilanen, "Stress response of Barkhausen noise in high carbon steel cables and ropes", Journal of Magnetism and Magnetic Materials 129, 217-225 (1994) North-Holland.
J. Kivimaa, M. Moilanen, R. Rautioaho, H. Zhang, "Influence of Tensile Stress in Steel Cables on Magnetic Barkhausen Noise", 8108 IEEE Transactions on Magnetics 29 (1993) Nov., No. 6, New York, US.

Affiliated with

Also associated with

Rating

Method and apparatus for the on-line measurement of the strength does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method and apparatus for the on-line measurement of the strength, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for the on-line measurement of the strength will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-472673