Patent ID: 7919753
Filing Date: 2011-04-05
Classification: G01N

Abstract:
1. A method of non-destructively determining by infrared spectroscopy the amount of ultraviolet degradation of an organic polymer containing surface comprising: irradiating said organic polymer containing surface with infrared energy comprising a spectrum of wavelengths; detecting and collecting at least one spectrum of said infrared energy reflected from said surface comprising said spectrum of wavelengths; performing multivariate analysis on the at least one spectrum of said reflected infrared energy; comparing results of said multivariate analysis with a predetermined calibration between model infrared energy spectra comprising said spectrum of wavelengths collected from a plurality of model organic polymer containing surfaces, said plurality of model organic polymer containing surfaces each comprising a known amount of said ultraviolet degradation including a known amount of ultraviolet exposure; and, determining said amount of said ultraviolet degradation of said organic polymer containing surface based on said predetermined calibration.