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1. Scope

This standard specifies test procedures by xenon-arc lamp type weathering apparatus (here-after referred to as "apparatus") for evaluatingthe weatherability of various automotive materials and parts such as body paint, exterior partspaint, and plastics used for exterior equipment.

Note: A xenon-arc lamp type weathering apparatusis an apparatus capable of irradiating artificial light similar to sunlight in order to investigate the degree of weatherability over ashort period of time.

2. Normative References

This standard contains references to the following standards, which by inclusion, constituteprovisions of this standard. Use the latest editionof these standards.

JIS B 7754 Light-exposure and light-and-water exposure apparatus (Xenon-arc lamp type)

JIS D 0205 Test method of weatherability forautomotive parts

JIS L 0843 Testing method for colour fastness to xenon arc lamp light

JIS Z 8722 Methods of colour measurement-reflecting or transmitting objects

JIS Z 8730 Colour specification-colour differences of non-luminous materials

JIS Z 8741 Specular glossiness-methods ofmeasurement

3. Definitions

Definitions of terms used in this standard follow.

a) Weatherability

#p#分页标题#e#

Resistance to deterioration due mainly to exposure to sunlight, rain and snow, or atmospheric temperature and humidity in a naturalenvironment.

b) Black panel temperature (hereinafterreferred to as "B.P.T")

Temperature which represents the surfacetemperature of a specimen and indicated by a black panel temperature meter attached toa rack or turn table.

c) Xenon-arc lamp

Quartz jacketed xenon-arc lamps, by xenon-arc discharge, emit radiation in a range thatextends from below 270nm in the ultravioletthrough the visible spectrum and into the infrared.

d) Light emitter

Part comprising a xenon-arc lamp and filter

e) Exposing stage

Final exposing stage where a specimenevaluation test is performed.

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