Use of Uniformly Distributed Concentrated Sunlight for Highly Accelerated Testing of Coatings.

Jorgensen, G. ; Bingham, C. ; King, D. ; Lewandowski, A. ; Netter, J. ; Terwilliger, K. ; Adamsons, K.

Technical Information Center Oak Ridge Tennessee

关键词: Accelerated tests;    Ultraviolet radiation;    Coatings;    Light(Visible radiation);    Concentrators;   

RP-ID  :  DE2001772423

学科分类：工程和技术（综合）

美国|英语

来源: National Technical Reports Library

【 摘 要 】

NREL has developed a new ultraviolet (UV) light concentrator that allows material samples to be subjected to uniform intensity levels of 50-100X solar UV at closely controlled sample exposure temperatures. In collaboration with industry, representative coating systems have been exposed without introducing unrealistic degradation mechanisms. Furthermore, correlations have been derived between these highly accelerated test conditions and results obtained at 1-2 suns. Such information is used to predict the degradation of materials in real-world applications. These predictions are compared with measured in-service performance losses to validate the approach. This allows valuable information to be obtained in greatly reduced timeframes, which can provide tremendous competitive advantage in the commercial marketplace.