Method and apparatus for indicating or measuring contact distrib

Details Method and apparatus for indicating or measuring contact distrib Method and apparatus for indicating or measuring contact distrib

1975-03-17

1976-06-29

Corbin, John K.

Optics: measuring and testing

Refraction testing

Prism engaging specimen

350149, 356 35, G01B 1118

Patent

active

039663264

ABSTRACT:
A method and apparatus are described for indicating or measuring contact pressure distribution over a surface, in which method and apparatus, a pressure-transmitting member having a plurality of point-contact projections is used to transmit the contact pressure, in the form of a plurality of localized points, to a photoelastic member. The photoelastic member is one whose optical properties are changed when the member is subjected to pressure, and the changes in optical properties are optically displayed by directing polarized light onto the photoelastic member to produce interference patterns at the localized points of contact pressure.

REFERENCES:
patent: 2625850 (1953-01-01), Stanton
patent: 3034395 (1962-05-01), Zandman
patent: 3082664 (1963-03-01), Acloque
patent: 3096388 (1963-07-01), Davenport

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