Method of and apparatus for measuring stiffness

Details Method of and apparatus for measuring stiffness Method of and apparatus for measuring stiffness

1978-01-16

1980-07-22

Myracle, Jerry W.

Measuring and testing

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

By loading of specimen

73852, G01N 320

Patent

active

042133491

ABSTRACT:
In a testing machine a test piece and a reference piece having a known spring constant are superposed with fulcrums interposed between the opposite ends thus establishing a mirror image relationship. A load is applied to the center of the assembly by means of an elastic ring thereby creating a definite relative displacement between the test piece and the reference piece and the relative displacement is measured to determine the bending stiffness of the test piece. According to modified embodiments the torsional stiffness and tension can be measured.

REFERENCES:
patent: 2338338 (1944-01-01), Kieckhefer
patent: 3022662 (1962-02-01), Hebeler
patent: 3194063 (1965-07-01), McKean

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