Optics: measuring and testing – Material strain analysis – By light interference detector
Patent
1997-06-11
1999-10-05
Font, Frank G.
Optics: measuring and testing
Material strain analysis
By light interference detector
356347, G01B 902
Patent
active
059633107
ABSTRACT:
A surface imaging skin friction instrument allowing 2D resolution of spatial image by a 2D Hilbert transform and 2D inverse thin-oil film solver, providing an innovation over prior art single point approaches. Incoherent, monochromatic light source can be used. The invention provides accurate, easy to use, economical measurement of larger regions of surface shear stress in a single test.
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Brown James L.
Naughton Jonathan W.
Font Frank G.
Lupuloff Harry
Mannix John G.
Nguyen Tu T.
The United States of America as represented by the Administrator
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