Method and apparatus for measuring torsional rigidity of a shaft

Details Method and apparatus for measuring torsional rigidity of a shaft Method and apparatus for measuring torsional rigidity of a shaft

1997-02-07

1998-03-24

Biegel, Ronald L.

Measuring and testing

Specimen stress or strain, or testing by stress or strain...

By loading of specimen

73650, G01N 332

Patent

active

057315248

ABSTRACT:
A method for measuring the torsional rigidity distribution of a shaft comprises the steps of; disposing a shaft to be measured in a vertical position in which the upper end thereof is immovably held and the lower end of the shaft is rotatable about the axis of the shaft, demarcating the shaft along its length so as to establish a number of discrete sections of the shaft, performing measurements of the torsional frequency of an inertial mass held at designated discrete positions shaft, and calculating the torsional rigidity of each discrete section based on the measured torsional frequencies.

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patent: 4294120 (1981-10-01), Shima et al.
patent: 4715451 (1987-12-01), Bseisu et al.

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