Title
Method for determining stress-optical constants of optically isotropic and anisotropic materials
Document Type
Patent
Abstract
A method for optically determining the stress-optical constants of optically isotropic and anisotropic materials. A collimated beam of monochromatic light is directed at the tip of a crack in a thin plate specimen under plane-stress from a direction substantially perpendicular to the surface of the specimen and to the direction of the stress. Reflected and transmitted stress-optical constants are determined from a ratio of the diameters of transmitted and reflected caustics from the specimen and the known Poisson's ratio and modulus of elasticity for the specimen.
Patent Country
US
Patent Number
US4119380
Publication Date
10-10-1978
Assignee(s)
The University of Toledo
Application Number
05/761128
Filing Date
January 1977
Primary Class
73/800
Secondary Class
356/32
Rights
These materials are free of copyright restrictions and are in the public domain within the United States only. The USPTO reserves the right to assert copyright protection internationally.
Institution
The University of Toledo
Repository
University of Toledo Libraries
Digital Publisher
Digital Initiatives
Recommended Citation
Raftopoulos, Demetrios D. and Kartalopoulos, Stamatios V., "Method for determining stress-optical constants of optically isotropic and anisotropic materials" (1978). University of Toledo U.S. Patents. 236.
http://utdr.utoledo.edu/utpatents/236