Method of deformation measurement

Details Method of deformation measurement Method of deformation measurement

1975-01-20

1976-08-24

Corbin, John K.

Optics: measuring and testing

Refraction testing

Prism engaging specimen

356 32, 356111, 73 88A, G01B 902

Patent

active

039763811

ABSTRACT:
A method is disclosed for measuring in-plane deformation in a surface of an article, which includes attaching to the surface a grid pattern which is periodic in relief, allowing the grid pattern to become deformed and thereafter taking a cast replica of the deformed grid pattern and processing the replica under laboratory conditions to produce Moire fringes from which the deformation can be measured. The cast replica is taken by loading a rigid carrier in the form of a glass plate with a layer of silicone rubber which is a curable shape-retentive material, impressing the silicone rubber layer upon the deformed relief grid pattern and curing the silicone rubber so that the replica is a faithful and permanent reproduction of the deformed pattern.

REFERENCES:
patent: 3184961 (1965-05-01), Bell
patent: 3563940 (1971-02-01), Borucki
patent: 3604808 (1971-09-01), Watkins
patent: 3865488 (1975-02-01), Del Rio

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