Sunlight, either directly or through window glass, heat, and moisture are the most important - the primary - weather factors. They work synergistically, resulting in microscopic aging, visible degradation and ultimately product failure.
But other factors can also have a significant influence: salt corrosion, acid rain, algae and fungi, industrial pollutants, volcanic ash, wind, and sand abrasion are examples of secondary weather factors.
Understanding the fundamentals of weathering is critical to implementing the most efficient and effective testing strategy.
This Online Seminar is the first of a 6-part series on Fundamentals of Weathering:
1) Factors of Weathering
The other 5 parts are:
2) Outdoor Weathering
3) Laboratory Weathering
4) Test Methods & Basic Standards