Electricity: measuring and testing – Magnetic – Stress in material measurement
Patent
1989-04-05
1990-12-11
Strecker, Gerard R.
Electricity: measuring and testing
Magnetic
Stress in material measurement
324202, G01B 724, G01R 3312, G01R 3500, G01N 2772
Patent
active
049773739
ABSTRACT:
The present invention provides a method for determining biaxial stresses in a steel component by first generating a calibration datum from an experimental test piece having metallurgical properties similar to steel component and then applying values representative of measured Barkhausen noise levels obtained from the steel component to the calibration datum. The practice of the present invention yields values of strain in the first and second principal directions at the selected location on the steel component under examination.
REFERENCES:
patent: 3427872 (1969-02-01), Leep et al.
patent: 4481470 (1984-11-01), Wallace
patent: 4528856 (1985-07-01), Junker et al.
patent: 4634976 (1987-01-01), Tiitto
patent: 4881030 (1989-11-01), Stuecker et al.
Loomis, Keith E., Barkhausen Biaxial Stress/Strain Measurement System, Proceedings of the 13th International Nondestructive Testing Conf. San Antonio, Tex. 1981, 16 pages.
Karjalainen et al; "Detection of Fabrication Stresses by the Barkhausen Noise Method", The Effects of Fabrication Related Stresses on Product Manufacture and Performance (The Welding Institute, Abington Hall, Cambridge, 1985, sec. 13).
Furuya et al; Magnetic Barkhausen Noise Analysis in Bi-Axial Stress Test, Journal of Japanese Society of Nondestructive Inspection, vol. 36, No. 8, 1987, pp. 530-534.
American Stress Technologies, Inc.
Strecker Gerard R.
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