Measuring and testing – Dynamometers – Responsive to torque
Patent
1997-07-21
1999-05-25
Dombroske, George
Measuring and testing
Dynamometers
Responsive to torque
G01L 302
Patent
active
059071052
ABSTRACT:
This invention provides an improvement to magnetostrictive torque sensors giving an output signal indicative of the torque applied about the axis of a shaft where the shaft includes a magnetostrictive ring, attached to or formed as a part of the shaft so that the torque applied to the shaft is applied proportionally to the ring, and the ring consists essentially of novel composites consisting of magnetically hard and highly magnetostrictive rare earth (iron).sub.2 binary compound particles embedded in Cu, Fe, or other suitable metals.
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Garshelis, "A Torque Transducer Utilizing a Circularly Polarized Ring," IEEE Transactions on Magnetics, vol. 28, No. 5, Sep. 1992, pp. 2202-2204.
Pinkerton et al., "Magnetostrictive SmFe2/Metal Composites," Applied Physics Letters, V. 70, No. 19, pp. 2601-2603. May 12, 1997.
Peters, "Production and Evaluation of REFe2-Nickel Composite Magnetostictive Materials," Final Report to Naval Electronics System Command Contract No. N00039-77-0108, Jan. 1979.
Peters et al., Nickel Composite Magnetostrictive Material Research for Ultrasonic Transducer, Final Report to Naval Electronic Systems Command Contract No. N00039-76-C-0017, Jan. 1977.
Capehart Tenneille Weston
Herbst Jan Francis
Meyer Martin Stephen
Perry Thomas Arthur
Pinkerton Frederick Eugene
Dombroske George
General Motors Corporation
Grove George A.
Thompson Jewel V.
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