This Standard specifies the operating procedures for a controlled irradiance xenon arc light and water apparatus that uses one or more lamp(s) and optical filter(s) to produce irradiance similar to sunlight in the UV range and simulates the water absorption and stress cycles experienced by automotive exterior coatings under natural weathering conditions. This standard has also been found applicable to coatings on other transportation vehicles, such as aircraft, trucks and rail cars.
This test procedure is used to simulate the physical and environmental stresses that a coating for exterior transportation applications (e.g. automotive) is exposed to in a subtropical climate, such as south Florida. It has been found that such a subtropical climate causes particularly severe deterioration of such coatings. The long water exposures and wet/dry cycling found in south Florida are particularly important for this deterioration. This Standard was developed to address the deficiencies of historical tests used for transportation coatings, especially automotive coatings.
Keywordsaccelerated weathering, xenon arc test chamber, daylight filter
The title and scope are in draft form and are under development within this ASTM Committee.Back to Top
Ballot Item Approved as D7869-2013 and Pending Publication