Method for locating flaws in a smooth surface of an object

Optics: measuring and testing – By polarized light examination – With light attenuation

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356237, G01B 1130

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active

056276460

ABSTRACT:
A method for locating flaws in a smooth surface using at least one light source includes the steps of setting the light source at a predetermined length above the smooth surface, locating a highlight line, translating the light source across the smooth surface to create a plurality of highlight lines and locating distortions in the smooth surface.

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Highlight lines for surface quality control and shape manipulation, Yifan Chen, 1993.

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