Understanding real-world stresses and available testing methods and technology for interior and exterior parts
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EVs combine advanced polymers, coatings, composites, electronics and displays that face intense environmental stress. Exterior parts endure full–spectrum sunlight (UV, visible, IR), heat, moisture from dew and rain, and thermal shocks. Interior parts behind glass can exceed 100°C, causing fading, warping, delamination and functional degradation if materials are not validated. Rigorous weathering testing – especially realistic xenon‑arc exposure with controlled irradiance, temperature, humidity and water – compresses time while revealing failure modes early, enabling safer designs, faster development and longer-lasting vehicles.
In this Application Guide you learn about:
- How xenon‑arc instruments simulate sunlight
- Key weathering standards for exterior parts
- Electronics and displays testing with IEC and harmonization with ISO
- Natural and accelerated outdoor testing including EMMA/EMMAQUA
- Hot lightfastness standards for interiors and IP/DP box testing
