Measurement of surface roughness

Details Measurement of surface roughness Measurement of surface roughness

1975-01-20

1976-07-27

Borchelt, Archie R.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

356120, 356209, G01N 2130

Patent

active

039719561

ABSTRACT:
The roughness of a surface is determined by directing a laser beam, or other electromagnetic radiation, onto a number of small areas of the surface in turn and measuring intensity of radiation scattered from the small illuminated areas with detectors arranged at a number of angles to the surface. Both the height of surface irregularities and average statistical wavelength may be found without physical contact with the rough surface.

REFERENCES:
patent: 2446628 (1948-08-01), Brown
patent: 3591291 (1971-07-01), Greer et al.
patent: 3748484 (1973-07-01), Covault
patent: 3761179 (1973-09-01), Plummer et al.
patent: 3792930 (1974-02-01), Obenreder
patent: 3857637 (1974-12-01), Obenreder

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