ASTM G113-14

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
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Designation:G113 −14
Standard Terminology
Relating to Natural and Artificial Weathering Tests of
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Nonmetallic Materials
This standard is issued under the fixed designation G113; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision.Anumber in parentheses indicates the year of last reapproval.A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
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1. Scope 2.3 ANSI Standards:
ANSI/NCSL Z540-2-1997American National Standard for
1.1 Thisterminologystandardcoverstermsthatrelatetothe
Expressing Uncertainty—U.S. Guide to the Expression of
durability testing of Nonmetallic Materials using natural and
Uncertainty in Measurement
artificial weathering exposure techniques.
ISO 9370Plastics -- Instrumental Determination of Radiant
1.2 It is the intent of this terminology standard to include
Exposure in Weathering Tests -- General Guidance and
those weathering terms in wide use in ASTM for which
Basic Test Method
standard definitions appear desirable.
3. Significance and Use
2. Referenced Documents
2 3.1 This terminology is not intended to supersede the
2.1 ASTM Standards:
requirements of similar definitions in certain other documents,
D9Terminology Relating to Wood and Wood-Based Prod-
but is intended to provide a listing of terms that are in current
ucts
widespread usage, and their context in relation to weathering.
D4023Terminology Relating to Humidity Measurements
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(Withdrawn 2002)
4. Terminology
E41Terminology Relating To Conditioning
E772Terminology of Solar Energy Conversion 4.1 Definitions:
accelerated outdoor weathering, n—outdoor weathering us-
E973Test Method for Determination of the Spectral Mis-
match Parameter Between a Photovoltaic Device and a ing the sun as the source of irradiance, and where the rate of
deterioration is accelerated by increasing one or more of the
Photovoltaic Reference Cell
G84Practice for Measurement of Time-of-Wetness on Sur- influencing parameters above a level obtained in the natural
environment.
faces Exposed to Wetting Conditions as in Atmospheric
Corrosion Testing
DISCUSSION—Examples of these types of exposures are found in
G90Practice for Performing Accelerated Outdoor Weather-
Practice G90 and Practice G201.
ing of Nonmetallic Materials Using Concentrated Natural
acceleration factor, n—the ratio of exposure time required to
Sunlight
produce a specified amount of change in a material by one
G201Practice for Conducting Exposures in Outdoor Glass-
exposure test divided by the exposure time required to
Covered Exposure Apparatus with Air Circulation
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produce the same change by another exposure test.
2.2 AATCC Method:
DISCUSSION—Acceleration factors must be used with great caution
16Colorfastness to Light
because they vary between materials (including different formulations
of the same material) and are strongly dependent on the exposure
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conditionsandvariabilityofboththenaturalandlaboratoryaccelerated
This terminology is under the jurisdiction of ASTM Committee G03 on
Weathering and Durability and is the direct responsibility of Subcommittee G03.92 exposures.Accelerationfactorsmayalsovarydependingonthelevelof
on Terminology.
material property change used to determine the acceleration factor. Do
Current edition approved March 1, 2014. Published March 2014. Originally
not ratio irradiance in laboratory accelerated tests to irradiance in
approved in 1992. Last previous edition approved in 2009 as G113–09. DOI:
outdoorexposures,oruseequivalentradiantexposurestoestimatetime
10.1520/G0113-14.
to fail in outdoor exposures. These calculations ignore differences in
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For referenced ASTM standards, visit the ASTM website, www.astm.org, or
temperature and moisture between the accelerated test and exterior
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
exposures,andinthespectralpowerdistributionsofthelaboratorylight
Standards volume information, refer to the standard’s Document Summary page on
source and sunlight.
the ASTM website.
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The last approved version of this historical standard is referenced on
www.astm.org.
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Available from American Association of Textile Chemists and Colorists
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(AATCC), P.O. Box 12215, Research Triangle Park, NC 27709, http:// Available from National Conference of Standards Laboratories, 1800 30th St.,
www.aatcc.org. Suite 305B, Boulder, CO 80301.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
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G113−14
actinic radiation, n—the spectral region(s) of a light source absorbs all wavelengths uniformly, with a thermal sensitive
responsibleforthephotodegradationofaparticularmaterial. element firmly attached to the center of the expose
...