Test fixture for measuring stiffness in flexible materials

Details Test fixture for measuring stiffness in flexible materials Test fixture for measuring stiffness in flexible materials

1991-09-30

1993-01-12

Myracle, Jerry W.

Measuring and testing

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

By loading of specimen

G01N 320

Patent

active

051780178

ABSTRACT:
A test fixture apparatus for measuring the bending stiffness of specimens of flexible materials such as elastomers and like polymers. The preferred form includes two elements, an anvil member and a yoke member. The yoke includes a crosspiece and two pairs of depending legs forming parallel, spaced apart, inverted "V"s. Rollers extend between points on the lower parts of the legs to support the test specimens. The anvil member includes a crosspiece and a single pair of arms positioning a roller for applying a downward load to the center of the specimen held on the yoke rollers. The rollers allow the surface-soft specimens to slide over rather than dig into their supports, and this provides more accurate, repeatable readings of the bending forces applied to the specimens.

REFERENCES:
patent: 2506048 (1950-05-01), Van Den Akker
patent: 3194063 (1965-07-01), McKean
patent: 3500679 (1970-03-01), Smith
patent: 4730498 (1988-03-01), Blanch

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