Interferometric deformation analysis system

Details Interferometric deformation analysis system Interferometric deformation analysis system

1984-09-21

1986-10-28

Britton, Howard W.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

73573, 73656, 356348, 358 93, 358217, 358223, H04N 718

Patent

active

046202234

ABSTRACT:
Object deformations are analyzed by recording interferometric images using a television camera. The camera's photosensitive recording cathode is successively exposed to interferometric images of the object, respectively before and after a stress is applied to the object, while the camera's scanning beam is blanked out in order to record a composite image having fringe families arrayed as a function of the deformation of the object. Subsequent scanning of the cathode produces video signals representing variations of intensity in the superimposed illumination patterns of the composite image. The video signals may be digitized, analyzed and displayed on a cathode ray tube.

REFERENCES:
patent: 3545259 (1970-12-01), Grant
patent: 3649754 (1972-03-01), Macovski
patent: 3735036 (1973-05-01), Macovski
patent: 3816649 (1974-06-01), Butters
patent: 3943278 (1976-03-01), Ramsey
patent: 4167728 (1979-09-01), Sternberg
patent: 4392745 (1983-07-01), Wright

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