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A method for the visual detection of holes in thin polymeric filmsBack-lighting polymeric film with polarized light from a polarizing plate and viewing it through a second plate cross-polarized to the back-lighting provides visual contrast between the flaw and the transparent film.
Document ID
19700000026
Acquisition Source
Legacy CDMS
Document Type
Other - NASA Tech Brief
Authors
Von Volkli, A. D. (BOEING CO.)
Wiedekamp, K. E.
Date Acquired
August 5, 2013
Publication Date
April 1, 1970
Subject Category
Materials
Report/Patent Number
LEW-10876
Report Number: LEW-10876
Accession Number
70B10027
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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