Method for measuring stresses or forces

Details Method for measuring stresses or forces Method for measuring stresses or forces

1977-05-10

1979-02-13

Hall, Carl E.

Metal working

Method of mechanical manufacture

Electrical device making

29602R, 29607, 73141A, 73DIG2, 336 20, 336 83, 336212, H01F 4100

Patent

active

041387830

ABSTRACT:
A method for measuring stresses or forces by measurement of variations of the magnetic properties of ferromagnetic substances under stress conditions. This is carried out by providing a ring of ferromagnetic material between two parallel faces on or between which the stresses are exerted, the ring defining a magnetic circuit, providing an electric coil within and around the ring, passing a current through the coil and measuring changes in the properties of the current to measure variations in the magnetic properties of the ring.

REFERENCES:
patent: 2053560 (1936-09-01), Janovsky
patent: 2553833 (1951-05-01), Rifenbergh

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