Tension gauge for thin materials

Details Tension gauge for thin materials Tension gauge for thin materials

1990-04-05

1991-05-21

Ruehl, Charles A.

Measuring and testing

Dynamometers

Responsive to force

7386248, G01L 504, G01L 510

Patent

active

050164791

ABSTRACT:
A tension gauge for measuring the principal tensions in an elastic material and providing specific information about the magnitude and direction of the principal tension. The tension gauge employs a frame structure over which an elastic material is stretched. A depressing device depresses the center of the elastic material a known distance and the force required for this activity is measured. In the device, either the contact surface of the depressing device or the frame structure is non-symmetric about two orthogonal axes. In either case, because of the non-symmetric nature, the relative sensitivity of the tension gauge to the major axis tension and minor axis tension in the elastic material will be different and fixed by the ratio of the major and minor axis of either the frame structure or the contact surface of the depressing device, whichever is non-symmetric. The principal tensions in elastic material and information about their magnitude and direction are determined.

REFERENCES:
patent: 1723636 (1929-08-01), Tuckerman et al.
patent: 3296857 (1967-01-01), Kaczeus
patent: 3750466 (1973-08-01), Ott et al.
patent: 4590808 (1986-05-01), Lightfoot et al.

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