PV 39292023-01-09T15:00:58+00:00

PV 3929 : Automotive Weathering Standards

Volkswagen. Non-metallic materials – weathering in dry, hot climate.

A standard for testing the ageing behaviour of plastics (such as a change in colour and/or gloss), which are likely to be subjected to weather and daylight. Samples undergo an accelerated weathering programme of a dry, hot climate and are irradiated using xenon arc light.

Filters shall be used to adapt the xenon arc light to the global irradiation with its spectral distribution of ultraviolet and visible radiation. The test conditions each describe a year cycle, with close reference to the average dose of UV radiation of nm in dry heat, climate zones such as Arizona and South Africa.

NOTE: Additional tests may be required, along with visual evaluation, if the ageing causes changes in the mechanical properties and/or cracking. Further tests may include tensile tests, determination of impact resistance, determination of hardness and microscopic examinations.

accelerated weathering testing

 PV 3929 standard requirements

proposed parameter range within current operating range
(yes/no)
standard ref PV3929
irradiance 0.68W/m² at 340nm or 75W/m² at 300-400nm yes
filter system daylight Q yes
chamber temperature 50 degrees light yes
BST/BPT temperature BPT 90 degrees light ±3 yes
relative humidity 20% yes
light cycle continuous light yes
spray cycle no spray yes
test duration 1500hrs

More Accelerated Weathering Standards

Gregg Falconer

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