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ASTM G 156 : 2017 : REDLINE

Current
Current

The latest, up-to-date edition.

Standard Practice for Selecting and Characterizing Weathering Reference Materials
Available format(s)

PDF

Language(s)

English

Published date

01-02-2017

CONTAINED IN VOL. 14.04, 2017 Specifies the criteria to be used for selection of a weathering reference material (WRM) and procedures to be used for determining within lab and between lab tolerances of changes in measured properties of a reference materials.

1.1This standard describes the criteria to be used for selection of a weathering reference material (WRM) and procedures to be used for determining within lab and between lab tolerances of changes in measured properties of weathering reference materials. This standard also describes a procedure for comparing different lots of the same type of a weathering reference material.

Note 1:Examples of laboratory accelerated tests in which a weathering reference material could be used to monitor consistency are exposure tests such as those described in Practices G152, G153, G154, and G155and other standards in which tests conducted according to these standards are referenced. Examples of outdoor exposures where a weathering reference material could be used to monitor consistency are those conducted according to Practices G7, G24, or G90. A reference material can also be used to monitor consistency of exposure or conditioning test that do not involve exposure to light.

1.2Weathering reference materials are most often used to (1) monitor consistency (that is, repeatability, reproducibility, or both) of exposure tests, (2) to determine the time or radiant exposure at which test materials are evaluated, (3) as a reference material for comparing to test materials exposed at the same time. Weathering reference materials cannot be used to classify or characterize the relative severity of any exposure test because of the large variability in material responses to the effects of light, heat, and water.

1.3This practice does not cover control materials which, by definition are selected to be of similar composition and construction to the test materials, and are exposed at the same time as test materials.

1.4This practice provides an outline of experiments required to determine how the measured properties of the reference material change as a function of exposure to specified test conditions. It includes establishment of reproducible measurement procedures, determination of the critical spectral region in the light source causing the changes, and effects of other critical exposure stresses such as temperature and moisture.

Committee
G 03
DocumentType
Redline
Pages
5
PublisherName
American Society for Testing and Materials
Status
Current

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ASTM G 154 : 2016 : REDLINE Standard Practice for Operating Fluorescent Ultraviolet (UV) Lamp Apparatus for Exposure of Nonmetallic Materials
ASTM G 152 : 2013 : REDLINE Standard Practice for Operating Open Flame Carbon Arc Light Apparatus for Exposure of Nonmetallic Materials
SAE J 2412 : 2015 Accelerated Exposure of Automotive Interior Trim Components Using a Controlled Irradiance Xenon-Arc Apparatus<br>
ASTM G 7 : 2005 Standard Practice for Atmospheric Environmental Exposure Testing of Nonmetallic Materials
ASTM G 155 : 2013 : REDLINE Standard Practice for Operating Xenon Arc Light Apparatus for Exposure of Non-Metallic Materials
ASTM G 113 : 2016 : REDLINE Standard Terminology Relating to Natural and Artificial Weathering Tests of Nonmetallic Materials
ASTM G 178 : 2016 : REDLINE Standard Practice for Determining the Activation Spectrum of a Material (Wavelength Sensitivity to an Exposure Source) Using the Sharp Cut-On Filter or Spectrographic Technique
ASTM G 24 : 2013 : REDLINE Standard Practice for Conducting Exposures to Daylight Filtered Through Glass

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