Process and installation for the identification of materials

Details Process and installation for the identification of materials Process and installation for the identification of materials

1993-11-18

1996-02-06

Hannaher, Constantine

Radiant energy

Invisible radiant energy responsive electric signalling

Infrared responsive

250330, 25033908, 2503411, G01N 2171, G01N 2518

Patent

active

054897785

ABSTRACT:
Materials are exposed to laser energy, and after the material is heated, the thermal radiation of the material is measured. Following this, a material-specific evaluation takes place, based on optical and thermal material properties. At least one area on the surface of the material to be identified is subject to a short, point-shaped exposure of laser radiation. The material-specific thermal impulse response for the radiated surface area of the material is both locally and temporally measured, and evaluated as regarding the kind of material.

REFERENCES:
patent: 4928254 (1990-05-01), Knudsen et al.
patent: 5075552 (1991-12-01), McClelland et al.
patent: 5118945 (1992-06-01), Winschuh et al.
Otto Renius, "Laser Illumination for Infrared Nondestructive Testing." Materials Evaluation (May 1973) pp. 80-84.

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