Apparatus for measuring the flexural stiffness of moved laminar-

Details Apparatus for measuring the flexural stiffness of moved laminar- Apparatus for measuring the flexural stiffness of moved laminar-

1997-09-16

1999-04-06

Noori, Max H.

Measuring and testing

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

By loading of specimen

73849, G01N 332

Patent

active

058921575

ABSTRACT:
An apparatus for measuring the flexural stiffness of a moving laminar-shaped material web is disclosed that guides the material web over two stationary guide rollers and a deflecting roller. The deflecting roller rides on the material web and deflects the material web for a predetermined distance. A force-measuring device attached to the deflecting roller measures the force exerted by the material web. An actuator movably attached to the force-measuring device is actuated periodically to move the deflecting roller into the material web whereby the force related to the additional periodic deflection is measured by the force-measuring device and evaluated to determine the flexural stiffness of the material web. In a second embodiment of the present invention, the actuator is not used and the deflecting roller includes an eccentric cross-section which imparts on the material web a periodic deflection of the web.

REFERENCES:
patent: 3196672 (1965-07-01), Keller
patent: 4347736 (1982-09-01), Desai et al.
patent: 4589288 (1986-05-01), Porter et al.
patent: 5503024 (1996-04-01), Bechtel
patent: 5507189 (1996-04-01), Kim et al.
patent: 5574227 (1996-11-01), Allan

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