Optics: measuring and testing – Material strain analysis – By light interference detector
Patent
1992-02-18
1997-09-23
Nelms, David C.
Optics: measuring and testing
Material strain analysis
By light interference detector
356347, 356359, G01B 902
Patent
active
056710429
ABSTRACT:
A system and process for the measurement of strains in objects using holographic interferometry comprising a continuous point light source for illuminating the object, a fringe stabilizer for compensating for the vibratory motion of the object, a detector for capturing a holographic image, a rigid body motion compensator for compensating for the rigid body motion of the object caused by displacement of the object upon application of a force, and an electronic system for reconstructing the holographic image to permit comparison of the object before and after application of a force.
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Illinois Institute of Technology
Kim Robert
Nelms David C.
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