Method of stress-optical force measurement and measurement devic

Details Method of stress-optical force measurement and measurement devic Method of stress-optical force measurement and measurement devic

1989-09-15

1991-07-02

Willis, Davis L.

Optics: measuring and testing

Material strain analysis

With polarized light

G01L 124

Patent

active

050281305

ABSTRACT:
A method of stress-optical force measurement where a linearly polarized light ray is guided into a stress-optical measurement array consisting of several measurement members on which the force to be measured acts in a distributed manner. The light ray successively traverses the measurement members while being influenced in a force-dependent manner and is applied to a subsequent evaluation unit for evaluation. The invention also relates to a measurement device for performing the method, comprising a measurement array and an evaluation unit between two plates which are arranged in parallel at a distance from one another. The measurement array consists of at least three spaced stress-optical measurement members which keep the plates at a distance from one another, influence the light ray in a force-dependent manner, and guide the light ray into the evaluation unit arranged between two measurement members.

REFERENCES:
patent: 4668085 (1987-05-01), Pitt et al.

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