Fluorescent penetrant inspection sensor

Details Fluorescent penetrant inspection sensor Fluorescent penetrant inspection sensor

1986-12-24

1990-11-06

Fields, Carolyn E.

Radiant energy

Luminophor irradiation

250302, G01N 2191, G01N 2164

Patent

active

049688928

ABSTRACT:
A fluorescent penetrant inspection sensor using a laser light source for locating and mapping minute surface flaws. The sensor focuses laser radiation to a point on a surface to be inspected and systematically scans the surface for reflections within a predetermined frequency range. A plurality of lenses on the sensor collect light from fluorescing penetrant. The sensed fluorescence triggers a detector which provides a flaw detection signal and coordinates the signal with the present location of the scanning radiation. Flaws are digitized and mapped for analysis. The sensor includes unique scanning and focusing apparatus with optical systems responsive only to radiation frequencies common to the fluorescent penetrant.

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Black et al., Scanned-Laser Microscope for Photoluminescence Studies, 7/72 Applied Optics, pp. 1553-1562.

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