Method and apparatus for evaluating the degree of cure in polyme

Details Method and apparatus for evaluating the degree of cure in polyme Method and apparatus for evaluating the degree of cure in polyme

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

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