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    Artificial Weathering

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    Artificial weathering is the exposure of materials to laboratory controlled conditions of light, heat, and moisture. The purpose is to accelerate deterioration by radiation that is more intense than the natural radiation of the sun, and also by applying this radiation over periods longer than those normally received from the sun, especially during winter. Hence, during its early use and to some extent, currently, the term “accelerated” is often applied. However, ince the procedure is actually artificial or simulated, it should be referred to as such. Intensified testing, such as ozonation and photochemical embrittlement, also treated in this chapter, are not artificial weathering because the weather factor is not present.

    Author Information:

    Garlock, NB

    Sward, GG

    Committee/Subcommittee: D01.26

    DOI: 10.1520/STP37170S