Method of energizing a magnetic stress transducer to reduce the

Details Method of energizing a magnetic stress transducer to reduce the Method of energizing a magnetic stress transducer to reduce the

1975-05-01

1976-09-14

Corcoran, Robert J.

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

Frequency of cyclic current or voltage

73 885R, 73DIG2, G01R 3318

Patent

active

039809471

ABSTRACT:
In measuring mechanical stresses in an object of hardened and tempered steel with a magnetic transducer of the type which comprises a magnetizing circuit for generating a magnetic field in the object and a measuring circuit for sensing the changes in the magnetic field which occur in the object when it is subjected to mechanical forces, in order to reduce the creep of the measuring signal which occurs in the case of continuous feeding, the magnetizing circuit is energize with energy in the form of AC pulses of a pulse length between 20 and 120 milliseconds.

REFERENCES:
patent: 2912642 (1959-11-01), Dahle
patent: 3424007 (1969-01-01), Pasnak et al.
patent: 3639832 (1972-02-01), Goebbels

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