Optics: measuring and testing – Material strain analysis
Patent
1996-11-13
1998-05-26
Font, Frank G.
Optics: measuring and testing
Material strain analysis
G01B 1116
Patent
active
057574731
ABSTRACT:
An optical strain sensor for measuring microdeformations of a surface with a resolution of at least 0.2 microns. The sensor comprises at least one camera for taking photographs of areas of the surface, the photographs being separated by a known fixed distance from one another before deformation has occurred. Templates are selected on the photographs taken before deformation, relocalized on photographs taken after deformation of the surface, and the deformation is derived from the computation of the difference in distances between the templates before and after deformation has occurred.
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Cantin Michel
Coulombe Alain
Jacob Denis
Kanduth Harald
Renaud Christian
Font Frank G.
Merlino Amanda
Noranda Inc.
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