Standard Practice for Polarized Light Detection of Flaws in Aerospace Transparency Heating Elements

Importancia y uso:

4.1 This practice is useful as a screening basis for acceptance or rejection of transparencies during manufacturing so that units with identifiable flaws will not be carried to final inspection for rejection at that time.

4.2 This practice may also be employed as a go-no go technique for acceptance or rejection of the finished product.

4.3 This practice is simple, inexpensive, and effective. Flaws identified by this practice, as with other optical methods, are limited to those that produce temperature gradients when electrically powered. Any other type of flaw, such as minor scratches parallel to the direction of electrical flow, are not detectable.

Subcomité:

F07.08

Referida por:

F0520-21, F0790-23

Volúmen:

15.03

Número ICS:

49.060 (Aerospace electric equipment and systems)

Palabras clave:

coatings; conductive coatings; heating elements; polarized light; polarized light inspection ;