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ASTM F733-09(2014)

Historical Reaffirmation

Standard Practice for Optical Distortion and Deviation of Transparent Parts Using the Double-Exposure Method

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1.1 This photographic practice determines the optical distortion and deviation of a line of sight through a simple transparent part, such as a commercial aircraft windshield or a cabin window. This practice applies to essentially flat or nearly flat parts and may not be suitable for highly curved materials.

1.2 Test Method F801 addresses optical deviation (angluar deviation) and Test Method F2156 addresses optical distortion using grid line slope. These test methods should be used instead of Practice F733 whenever practical.

1.3 This standard does not purport to address the safety concerns 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.


5.1 Transparent parts, such as aircraft windshields and windows, can be inspected using this practice, and the amount of optical distortion or deviation can be measured. The measurement can be checked for acceptability against the specification for the part. The photograph (digital file, print or negative) can be maintained as a permanent record of the optical quality of the part.

SDO ASTM: ASTM International
Document Number F733
Publication Date Dec. 1, 2014
Language en - English
Page Count 5
Revision Level 09(2014)
Supercedes
Committee F07.08
Publish Date Document Id Type View
Nov. 1, 2019 F0733-19 Revision
May 15, 2009 F0733-09 Revision
Jan. 1, 1990 F0733-90R97E01 Revision
May 1, 2024 F0733-19R24 Reaffirmation
Dec. 1, 2014 F0733-09R14 Reaffirmation
Oct. 1, 2003 F0733-90R03 Reaffirmation