ASTM G155

ASTM G155 is a standard test method for operating Xenon Arc light apparatus for exposure of non-metallic materials. This test method is used to evaluate the durability of materials exposed to simulated outdoor weathering conditions by subjecting them to xenon arc light radiation, temperature, and moisture in a controlled laboratory setting.

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Frequently Asked Questions

ASTM G155 is an essential method for evaluating materials' resistance to the most rigorous environmental and solar exposure conditions.

The most apparent difference is that ASTM G154 testing uses fluorescent light sources to simulate UVA and UVB. In contrast, ASTM G155 testing uses xenon arc UV light sources to simulate exposure to natural sunlight.

It has two types: a pure xenon gas short arc lamp and a xenon-mercury short arc lamp. The pure xenon gas variant contains only xenon gas, whereas the xenon-mercury variant contains xenon gas with a small amount of mercury metal.

The xenon lamp contains two electrodes in a glass bulb filled with xenon gas. High voltage is applied to the electrodes, momentarily releasing sparks to create a light flash. The xenon arc can be spectrally closer to daylight than the incandescent source.

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