Magneto-elastic transducer

Details Magneto-elastic transducer Magneto-elastic transducer

1976-11-08

1978-05-09

Ciarlante, Anthony V.

Measuring and testing

Volumetric content measuring

73DIG2, G01L 500

Patent

active

040880133

ABSTRACT:
A transducer for magneto-elastic stress measurement is formed of a holder and a core of magneto-elastic material provided with coils to generate a flux in and sense flux alterations produced by stresses of the core. The core is formed of one or more plates firmly attached to the holder and designed to be attached to the measuring object. The core may consist of a single plate attached to the holder at four symmetrical points, or of a cross having four arms the ends of which are welded to a frame of magnetic material which is secured to the holder. The holder may also be in the form of a casing of magnetic material which protects the core and coils and serves as a magnetic return path for the fluxes. For applications where disturbing magnetic fields may occur in the measuring object, the casing is preferably made of non-magnetic material and provided with a frame of magnetic material as a return path for the flux.

REFERENCES:
patent: 2895332 (1959-07-01), Dahle et al.
patent: 3356977 (1967-12-01), Ohlsson
patent: 3379053 (1968-04-01), Berglund et al.
patent: 3469440 (1969-09-01), Lorgren
patent: 3498124 (1970-03-01), Soulant
patent: 3613442 (1971-10-01), Bielsten
patent: 3742759 (1973-07-01), Nishimura
patent: 3782187 (1974-01-01), Dahle
patent: 3861203 (1975-01-01), Dahle et al.

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