Method for determining properties of optically isotropic and anisotropic materials

Simple item page
dc.contributorThe University of Toledo
dc.contributorRaftopoulos, Demetrios D.
dc.contributorKartalopoulos, Stamatios V.
dc.date1980-04-01
dc.date.accessioned2024-05-24T16:12:37Z
dc.date.available2024-05-24T16:12:37Z
dc.descriptionA method for optically determining the ratio of Poisson's ratio to modulus of elasticity for optically isotropic and optically anisotropic transparent materials and then for determining the stress-optical constants for such materials. A collimated monochromatic light beam is directed at the tip of a crack in a loaded thin plate specimen of the material and the diameters of the resulting transmitted and reflected caustics are measured at points equidistant from the specimen. The light beam also is directed to an uncracked region in a loaded thin plate specimen of the material and the number of displaced fringe reflected on a screen are counted for a predetermined change in loading. The ratio of Poisson's ratio to modulus of elasticity and the stress-optical constants are determined from the thickness of the specimen, the displaced fringe count, the wavelength of the light beam and the ratio of the caustic diameters.
dc.formatapplication/pdf
dc.identifierutoledo:1231
dc.identifieriid:utpatents-US4195929
dc.identifierPatent No.: US4195929
dc.identifierAppl. No.: 05/948317
dc.identifier.urihttps://hdl.handle.net/20.500.14324/5589
dc.language.isoeng
dc.publisherUnited States Patent and Trademark Office
dc.rightsNo Copyright - United States
dc.subject356/32
dc.subject73/800
dc.titleMethod for determining properties of optically isotropic and anisotropic materials
dc.typeText
dc.typepatent

Files

Original bundle

Now showing 1 - 1 of 1
Thumbnail Image
Name:
utoledo_1231.pdf
Size:
509.6 KB
Format:
Adobe Portable Document Format
Download

Collections

University of Toledo U.S. Patents