ASTM-E408 Standard Test Methods for Total Normal Emittance of Surfaces Using Inspection-Meter Techniques

ASTM-E408 - 2013 R19 EDITION - CURRENT
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Standard Test Methods for Total Normal Emittance of Surfaces Using Inspection-Meter Techniques
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Scope

1.1 These test methods cover determination of the total normal emittance (Note) of surfaces by means of portable, inspection-meter instruments. Note 1Total normal emittance (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 N to wavelength and spectral normal emittance [N()] is

Equation 1 - (See Note 1 and equation in body of E408-71(2002).)

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

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.

Keywords

emittance; infrared emittance; material radiative property; normal emittance; radiative heat transfer; spacecraft thermal control; thermal radiation

To find similar documents by ASTM Volume:

15.03 (Space Simulation; Aerospace and Aircraft; Composite Materials)

To find similar documents by classification:

17.040.20 (Properties of surfaces)

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Document Number

ASTM-E0408-13R19

Revision Level

2013 R19 EDITION

Status

Current

Modification Type

Reapproval with Ed Change

Publication Date

Oct. 1, 2019

Document Type

Test Method

Page Count

5 pages

Committee Number

E21.04