Method and apparatus for measuring the residual tension in a stu

Details Method and apparatus for measuring the residual tension in a stu Method and apparatus for measuring the residual tension in a stu

1980-02-25

1982-06-08

Ciarlante, Anthony V.

Measuring and testing

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

Threaded fastener stress

F16B 3102

Patent

active

043333516

ABSTRACT:
A method and apparatus for determining the residual force or tension in a bolt or stud is presented. The bolt or stud in a previously tightened joint is stressed by the imposition of a pulling force, the resulting strain on the bolt is measured to develop a force-strain relationship, and the measured force-strain relationship is compared to previously determined force-strain relationships for the joint to determine the residual force or tension in the bolt or stud.

REFERENCES:
patent: 3382709 (1968-05-01), Sorensen
patent: 3759090 (1973-09-01), McFaul et al.
patent: 3969960 (1976-07-01), Pagano

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