Electricity: measuring and testing – Measuring – testing – or sensing electricity – per se – Frequency of cyclic current or voltage
Patent
1975-01-30
1976-08-17
Corcoran, Robert J.
Electricity: measuring and testing
Measuring, testing, or sensing electricity, per se
Frequency of cyclic current or voltage
73 885R, G01R 3312
Patent
active
039756858
ABSTRACT:
A magnetoelastic shear force measuring means for measuring shear stresses in tubular axles, preferably in aircraft landing gear axles, comprises two shear stress transducers. Each transducer has one iron core with winding to generate a magnetic field in the measuring object and a second iron core with winding to sense the field alterations generated in the measuring object by shear stresses. The two transducers are combined to form a measuring unit which is inserted in the tubular axle. The windings on the cores of the transducers are connected in such a way that the shear signals are added and signals from any torsion occurring are subtracted from each other.
REFERENCES:
patent: 3184963 (1965-05-01), Dahle
patent: 3465581 (1969-09-01), Hohenberg
Bielsten Nils-Ove
Dahle Orvar
Grek Ronald
Lindback Lars-Erik
Siby Sture
Allmanna Svenska Elektriska Aktiebolaget
Corcoran Robert J.
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