Strain detector

Details Strain detector Strain detector

1991-09-10

1993-12-07

Chilcot, Jr., Richard E.

Measuring and testing

Dynamometers

Responsive to torque

73862333, 73862335, G01L 300

Patent

active

052674762

ABSTRACT:
A strain detector includes a passive member for receiving an external force, magnetostrictive layers formed on a surface of passive member and made of a magnetic material containing nickel and at least one kind of metal sulfide produced from reaction of a metal more reactive with sulfur than nickel with sulfur as an impurity, and a detection coil provided close to an exterior of magnetostrictive layers and used for detecting variations of permeability caused by strain of the magnetostrictive layers in response to the external force.

REFERENCES:
patent: 3861206 (1975-01-01), Kawafune et al.
patent: 4414855 (1983-11-01), Iwasaki
patent: 4896544 (1990-01-01), Garshelis
patent: 4935263 (1990-06-01), Satoh et al.
"Development of Ni-Fe Alloy Plating for Prolonging Continuous Steel Casting Mold Life", Technical Report, vol. 14, No. 4 (1982), pp. 12-19.
I. Sasada et al, "Torque Transducers With Stress-Sensitive Amorphous Ribbons of Chevron-Pattern", IEEE Transactions on Magnetics, vol. MAG-20, No. 5, Sep. 1984, pp. 951-953.

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