ASTM-F1316 › Standard Test Method for Measuring the Transmissivity of Transparent Parts
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Scope
1.1 This test method describes an apparatus and procedure that is suitable for measuring the transmissivity of large, thick, or curved transparent parts including parts already installed. This test method is limited to transparencies that are relatively neutral with respect to wavelength (not highly colored).
1.2 Since the transmissivity (transmission coefficient) is a ratio of two luminance values, it has no units. The units of luminance recorded in the intermediate steps of this test method are not critical; any recognized units of luminance (for example, foot-lamberts or candelas per square metre) may be used, as long as use is consistent.
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.
Significance and Use
Significance—This test method provides a means to measure the transmissivity of parts in the field (already installed on aircraft) and of large, thick or curved parts that may not lend themselves to measurement using Test Method D 1003
Use—This test method may be used on any transparent part. It is primarily intended for use on large, curved, or thick parts that may already be installed (for example, windscreens on aircraft).
Keywords
apparutus; transmissivity; colored; coefficient; luminance; ICS Number Code 17.180.01 (Optics and optical measurement in general)
To find similar documents by ASTM Volume:
15.03 (Space Simulation; Aerospace and Aircraft; Composite Materials)
To find similar documents by classification:
17.180.01 (Optics and optical measurements in general)
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Document Number
ASTM-F1316-18R23
Revision Level
2018 R23 EDITION
Status
Current
Publication Date
June 7, 2023
Document Type
Test Method
Page Count
5 pages
Committee Number
F07.08