ASTM E408-13

Standard Test Methods for Total Normal Emittance of Surfaces Using Inspection-Meter Techniques

ASTM International, 06/01/2013

Publisher: ASTM

File Format: PDF

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Description

Published:01/06/2013

Pages:5

File Size:1 file , 81 KB

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1.1 These test methods cover determination of the total normal emittance (Note 1) of surfaces by means of portable, as well as desktop, inspection-meter instruments.

Note 1-Total normal emittance (ε_N) is defined as the ratio of the normal radiance of a specimen to that of a blackbody radiator at the same temperature. The equation relating ε_N to wavelength and spectral normal emittance [ε_N(λ)] is

1.2 These test methods are intended for measurements on large surfaces, or small samples, or both, when rapid measurements must be made and where a nondestructive test is desired. They are particularly useful for production control tests.

1.3 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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