Testing method for the separate determination of varying work su

Details Testing method for the separate determination of varying work su Testing method for the separate determination of varying work su

1976-01-27

1977-10-25

Corbin, John K.

Optics: measuring and testing

Photometers

250563, 250572, 356241, G01N 2148

Patent

active

040553825

ABSTRACT:
A process and apparatus for the automatic checking of machined part surfaces for surface flaws by means of bundled light rays which are directed onto the surface to be checked by means of optical instruments, whereby the light rays are reflected by the surface with varying intensity and in accordance with the nature of the surface, and whereby the light rays, at least partly, are redirected via optical instruments towards at least one light-sensitive element which converts the reflected light energy into electrical signals, and the step of separately evaluating the reflected amount of light as far as its varying intensity and dispersion is concerned, in order to indicate surface flaws of different types, as for example, material and machining flaws.

REFERENCES:
patent: 3749496 (1973-07-01), Hietanen et al.
patent: 3806256 (1974-04-01), Ishak
patent: 3924954 (1975-12-01), Decret et al.
Heinz, "Method of Checking Wall Imperfections," Western Electric Technical Digest, No.19, pp. 31-32, July, 1970.

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