Procedure for evaluating the friction characteristics of a shoul

Details Procedure for evaluating the friction characteristics of a shoul Procedure for evaluating the friction characteristics of a shoul

1995-07-03

1997-06-10

Dougherty, Elizabeth L.

Measuring and testing

Dynamometers

Responsive to torque

G01L 302

Patent

active

056378068

ABSTRACT:
Procedure for evaluating the parameter of actual K.sub.a total friction of a shouldered threaded connection which includes:
a) making up the connection applying a general make-up torque and observing the corresponding torque/turn diagram;
b) subsequently breaking out the connection observing the corresponding torque/turn diagram;
c) calculating the actual K.sub.a of the connection with an appropriate equation.

REFERENCES:
patent: 4633702 (1987-01-01), Kaiser et al.
patent: 4941358 (1990-07-01), Wing
Soviet Journal of Friction and Wear, vol. 7, No. 3, pp. 131-135, 1986, D.N. Reshetov, et al., "Statistical Analysis of Friction Coefficients in Threaded Connections in Application to Reliability Calculations".

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