Entwodiksyon nan tès UV aje.

UV aje fè pati aje nan limyè solèy la iradyasyon, UV se kout pou Iltravyolèt (iltravyolèt), ki anjeneral yo itilize pou evalye to a aje nan pwodwi anba limyè iltravyolèt. Limyè solèy la iradyasyon aje se domaj prensipal la nan materyèl yo itilize deyò. Pou materyèl yo itilize andedan kay la, Li kapab tou sibi yon sèten degre nan limyè solèy la iradyasyon aje oswa aje ki te koze pa limyè iltravyolèt soti nan sous atifisyèl (tankou lanp iltravyolèt, lanp fliyoresan nan gwoup la iltravyolèt, elatriye).

The solar radiation is mainly concentrated in the visible part (0.4-0.76 μm), and the wavelength of infrared is larger than that of visible light (>0.76μm) ak mwens pase vizib iltravyolèt (< 0.4μm)="" less.="" in="" the="" total="" radiation="" energy,="" the="" wavelength="" between="" 0.15="" ~="" 4μm="" accounts="" for="" more="" than="" 99%,="" and="" is="" mainly="" distributed="" in="" the="" visible="" region="" and="" the="" red="" and="" ultraviolet="" region.="" the="" visible="" region="" accounts="" for="" about="" 50%="" of="" the="" total="" solar="" radiation="" energy,="" the="" infrared="" region="" accounts="" for="" about="" 43%,="" the="" ultraviolet="" region="" solar="" radiation="" energy="" is="" very="" little,="" only="" about="" 7%="" of="" the="">

Limyè iltravyolèt se yon tèm jeneral pou radyasyon nan spectre elektwomayetik ak longèdonn ki sòti nan {{0}}.01 a 0.40 mikron, ki pa ka lakòz vizyon imen. Limyè iltravyolèt divize an reyon A, reyon B, ak reyon C (UVA, UVB, ak UVC pou kout) ak ranje longèdonn 400-315nm, 315-280nm, ak 280-190nm, respektivman.

Dapre ASTM G154, UV (iltravyolèt) pa ka simulation spectre konplè limyè solèy la. Prensip li se ke pou materyèl dirab ekspoze deyò, seri a longèdonn kout nan limyè iltravyolèt nan 300 a 400nm se kòz ki pi enpòtan nan domaj aje.