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ASTM G154-06（非金屬材料）快速紫外老化測(cè)試方法
最近更新時(shí)間：2014-11-10
提 供 商：廣東科文試驗(yàn)設(shè)備有限公司資料大小：148.9KB
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ASTM G154-06(非金屬材料)快速紫外老化測(cè)試方法
1. Scope
1.1 This practice covers the basic principles and operating
procedures for using fluorescent UV light, and water apparatus
intended to reproduce the weathering effects that occur when
materials are exposed to sunlight (either direct or through
window glass) and moisture as rain or dew in actual usage.
This practice is limited to the procedures for obtaining,
measuring, and controlling conditions of exposure. A number
of exposure procedures are listed in an appendix; however, this
practice does not specify the exposure conditions best suited
for the material to be tested.
NOTE 1—Practice G 151 describes performance criteria for all exposure
devices that use laboratory light sources. This practice replaces Practice
G 53, which describes very specific designs for devices used for fluorescent
UV exposures. The apparatus described in Practice G 53 is covered
by this practice.
1.2 Test specimens are exposed to fluorescent UV light
under controlled environmental conditions. Different types of
fluorescent UV light sources are described.
1.3 Specimen preparation and evaluation of the results are
covered in ASTM methods or specifications for specific
materials. General guidance is given in Practice G 151 and ISO
4892-1. More specific information about methods for determining
the change in properties after exposure and reporting
these results is described in ISO 4582.