Title
Method for determining stress-optical constants of optically isotropic and anisotropic materials
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.
Document Type
Patent
Primary Class
73/800
Secondary Class
356/32
Application Number
05/761128
Filing Date
January 1977
Patent Number
US4119380
Assignee(s)
The University of Toledo
Publication Date
10-10-1978
Patent Country
US
Language
en_US
Institution
The University of Toledo
Repository
University of Toledo Libraries
Digital Publisher
Digital Initiatives
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.
Rights Statement
No Copyright - United States. URI: http://rightsstatements.org/vocab/NoC-US/1.0/
The organization that has made the Item available believes that the Item is in the Public Domain under the laws of the United States, but a determination was not made as to its copyright status under the copyright laws of other countries. The Item may not be in the Public Domain under the laws of other countries. Please refer to the organization that has made the Item available for more information.