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Title: Method and apparatus for evaluating structural weakness in polymer matrix composites

A method and apparatus for evaluating structural weaknesses in polymer matrix composites is described. An object to be studied is illuminated with laser radiation and fluorescence emanating therefrom is collected and filtered. The fluorescence is then imaged and the image is studied to determine fluorescence intensity over the surface of the object being studied and the wavelength of maximum fluorescent intensity. Such images provide a map of the structural integrity of the part being studied and weaknesses, particularly weaknesses created by exposure of the object to heat, are readily visible in the image.
Inventors:
 [1];  [2]
  1. (Oak Ridge, TN)
  2. (Knoxville, TN)
Issue Date:
OSTI Identifier:
870250
Assignee:
Martin Marietta Energy Systems, Inc. (Oak Ridge, TN) ORNL
Patent Number(s):
US 5483338
Contract Number:
AC05-84OR21400
Research Org:
LOCKHEED MARTIN ENRGY SYST INC
Country of Publication:
United States
Language:
English
Subject:
method; apparatus; evaluating; structural; weakness; polymer; matrix; composites; weaknesses; described; studied; illuminated; laser; radiation; fluorescence; emanating; therefrom; collected; filtered; imaged; image; determine; intensity; surface; wavelength; maximum; fluorescent; images; provide; map; integrity; particularly; created; exposure; heat; readily; visible; matrix composites; laser radiation; structural integrity; polymer matrix; fluorescence intensity; matrix composite; structural weakness; evaluating structural; /356/250/