Sunlight, heat, and moisture act synergistically on materials, resulting in microscopic aging, visible degradation, and ultimately product failure. Laboratory weathering instruments simulate and control these primary weather factors in the "worst case".
However, the correlation to the real world can only be determined by comparing the laboratory test results with outdoor weathering data. A laboratory test that induces different aging processes than the end-use environment is useless.
Understanding the various options and technologies for direct, indirect, static, and accelerated outdoor exposure is critical to implementing the most efficient and effective testing strategy.
This Online Seminar is the second of a 6-part series on Fundamentals of Weathering:
2) Outdoor Weathering
The other 5 parts are:
1) Factors of Weathering
3) Laboratory Weathering
4) Test Methods & Basic Standards