Abstract
A method simulating light degradation environment on the outdoor exposure test quantitatively has been studied. Based on this method, degradation environment, i, e, solar irradiance and surface temperature, on the exposure surface is calculated accurately with a statistical meteorological data, For the calculation, a model expressing the time dependant behavior of irradiance, surface temperature, and clouded condition are examined empirically based on the actually measured environmental data around the world. With this method quantitative degradation environment is able to be calculated easily and accurately without actual measurement that takes more than one year. Application of the quantitatively evaluated degradation environment for the durability design and durability estimation is highly expected.
