Test methods, standards, and program guidance for xenon arc weathering, carbon arc weathering, UV exposure, temperature cycling, thermal shock, humidity, and condensation testing for automotive materials.
A coated part can pass UV weathering, look fine in the test lab, and then blister in the field within a season. The UV exposure didn’t cause the blistering. The moisture did. Specifically, the overnight condensation that built up under the coating once the part was installed and the temperature started cycling. Humidity and condensation…
UV damage is relentless, and it rarely shows up on day one A polymer part can look flawless at launch and still fail in the field. UV damage works like slow mechanical fatigue: you do not notice the early hits, then one day the surface chalks, the color shifts, the gloss drops, or a once-tough…
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