Photoelastic strain gauge

Details Photoelastic strain gauge Photoelastic strain gauge

1975-05-09

1978-10-31

Corbin, John K.

Optics: measuring and testing

Material strain analysis

73800, G01B 1118

Patent

active

041231589

ABSTRACT:
There is disclosed a photoelastic strain gauge which displays visual patterns representative of the strain in the workpiece to which the gauge is bonded. The gauge comprises two sheets of reflective material and a body of photoelastic material therebetween. A reflector in the body directs polarized light in such a way as to be reverberated between the reflective sheets and then discharged to produce the visual patterns. Because the light is reverberated, the visual patterns are amplified or enlarged.

REFERENCES:
patent: 1397541 (1921-11-01), Owens
patent: 2945958 (1960-07-01), Morris
patent: 2946992 (1960-07-01), Broido
patent: 3077813 (1963-02-01), Zandman

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