ASTM D7990 Standard Test Method for Using Reflectance Spectra to Produce an Index of Temperature Rise in Polymeric Siding
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- ASTM E855 Standard Test Methods for Bend Testing of Metallic Flat Materials for Spring Applications Involving Static Loading
- ASTM E691 Standard Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method
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- ASTM E691 Standard Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method
- ASTM E855 Standard Test Methods for Bend Testing of Metallic Flat Materials for Spring Applications Involving Static Loading
- ASTM E4 Standard Practices for Force Verification of Testing Machines
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- ASTM E855 Standard Test Methods for Bend Testing of Metallic Flat Materials for Spring Applications Involving Static Loading
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- ASTM G156 Standard Practice for Selecting and Characterizing Weathering Reference Materials
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- Картотека зарубежных и международных стандартов
ASTM International
Standard Test Method for Using Reflectance Spectra to Produce an Index of Temperature Rise in Polymeric Siding
N D7990
Annotation
This test method uses reflectance spectra from the ultraviolet, visible, and near infrared region to produce an index of the temperature rise of polymeric siding above ambient temperature that occurs due to absorption of the sun’s energy.
The test method determines the intensity factor of a sample color. The intensity factor is a function of the sample’s reflectance spectra and the energy output of the heat lamp used in the test method Test Method D4803.
Appendix X1 provides a method for using the intensity factor to determine the maximum temperature rise of a sample under severe solar exposure.
A correlation between intensity factor and heat buildup (temperature rise) as predicted by Test Method D4803 exists.
The heat buildup (temperature rise) for a polymeric building product specimen is determined from its reflectance spectra and the correlation’s regression equation.
Units—The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
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