Radiant energy – Photocells; circuits and apparatus – Optical or pre-photocell system
Patent
1989-06-12
1991-01-15
Westin, Edward P.
Radiant energy
Photocells; circuits and apparatus
Optical or pre-photocell system
356406, G01J 350
Patent
active
049856227
ABSTRACT:
A method and an apparatus determines a predicted corrosion resistance of deep-drawable iron sheets for body parts of motor vehicles. The method is caarried out with a measuring apparatus comprising one or more light sources with which the iron sheet is irradiated. The reflected light is concentrated by lenses, filtered through filters and the filtered light rays are imaged on a plurality of photoreceivers. The ratios of two respective filter wavelengths are evaluated by a computer from the signals thus obtained. From the values of the quotients of the filter wavelengths, predictions can then be made as to the paint migration values to be expected of the deep-drawable iron sheets painted in a later operation. A simple quality control of the iron sheets supplied by manufacturers for the production of components for motor vehicles can be based on these values.
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patent: 4647220 (1987-03-01), Adams et al.
patent: 4653014 (1987-03-01), Mikami et al.
Degen Winfried
Kessler Rudolf
Oelkrug Dieter
Tubach Martin
Daimler-Benz AG
Shami Khaled
Westin Edward P.
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