Radiant energy – Invisible radiant energy responsive electric signalling – Infrared responsive
Patent
1987-12-28
1989-10-17
Howell, Janice A.
Radiant energy
Invisible radiant energy responsive electric signalling
Infrared responsive
2503381, 374 53, G01N 2100
Patent
active
048749486
ABSTRACT:
The degree of cure in a polymeric composite is evaluated in a simple, rapid and non-destructive manner by heating a surface portion of the polymeric composite to substantially curing temperature, over a predetermined period of time, and continuously monitoring with a non-contact temperature sensor temperature fluctuations of the heated surface portion during the predetermined period of time to obtain data comprising surface temperature values measured as a function of time. By processing such data including comparing with a calibration reference, for example by providing a curve of the measured surface temperature values against time and comparing with a reference curve, one can evaluate the degree of cure of the polymeric composite.
REFERENCES:
patent: 3524983 (1970-08-01), Voelz
patent: 4421424 (1983-12-01), Price et al.
patent: 4481418 (1984-11-01), Vanzetti et al.
patent: 4556326 (1985-12-01), Kitchen, III et al.
patent: 4566806 (1986-01-01), DeBondt
patent: 4579463 (1986-04-01), Rosencwaig et al.
patent: 4582520 (1986-04-01), Sturm
Cielo Paolo
Cole Kenneth C.
Krapez Jean-Claude
Vaudreuil Ghislain
Canadian Patents and Development Limited
Hannaher Constantine
Howell Janice A.
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