UV Light Long Term Test Sample

I created these samples to find out how long my different materials can withstand UV light until they become brittle. The samples contain thinner areas which can be broken out from time to time to check if the material has already started to decompose. 

I also made a hanger that can hold several strips. M3 screws are needed for this. With the upper part of the bracket it is not necessary to fix every single strip with a screw.

The test strips in the pictures are made of different materials and have been lying unprotected outside in the sun for over 8 months. Until now I could not determine any influence by the sun.

If you like check out my other designs too!