UV aging belongs rau kev laus ntawm tshav ntuj irradiation, UV yog luv luv rau Ultraviolet (ultraviolet), uas feem ntau yog siv los ntsuas qhov kev laus ntawm cov khoom nyob rau hauv ultraviolet lub teeb. Hnub ci irradiation aging yog lub ntsiab aging puas ntawm cov khoom siv sab nraum zoov. Rau cov ntaub ntawv siv sab hauv tsev, Nws kuj tuaj yeem raug rau qee yam ntawm lub hnub ci irradiation kev laus los yog kev laus los ntawm ultraviolet lub teeb los ntawm cov khoom siv dag zog (xws li cov teeb ci ultraviolet, teeb fluorescent hauv ultraviolet band, thiab lwm yam).
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) thiab tsawg dua pom ultraviolet (< 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="">
Lub teeb ultraviolet yog ib lub ntsiab lus dav dav rau cov hluav taws xob hauv cov hluav taws xob hluav taws xob nrog cov wavelengths xws li {{0}}.01 txog 0.40 microns, uas tsis tuaj yeem ua rau tib neeg tsis pom kev. Lub teeb ultraviolet muab faib ua A rays, B rays, thiab C rays (UVA, UVB, thiab UVC luv luv) nrog wavelength ranges ntawm 400-315nm, 315-280nm, thiab 280-190nm, raws.
Raws li ASTM G154, UV (ultraviolet) tsis tuaj yeem simulate tag nrho cov hnub ci. Nws lub hauv paus ntsiab lus yog tias rau cov khoom siv ruaj khov tawm sab nraum zoov, qhov luv wavelength ntau ntawm ultraviolet lub teeb ntawm 300 txog 400nm yog qhov tseem ceeb tshaj plaws ua rau kev laus puas tsuaj.